Shared Flashcard Set

Details

Glossary of Terms for Wilderness Medicine
N/A
510
Medical
Graduate
04/09/2012

Additional Medical Flashcards

 


 

Cards

Term
TERM
Definition
definition
Term
Abduct
Definition
Refers to anatomical position and movement of limbs. To move away from the midline. The opposite of Adduct, which is to move towards the midline. You can remember the root AB means "away" by remembering that ABnormal means away from normal.
Term
Abscess
Definition
Commonly known as a boil. A skin infection with a localized collection of pus, much like a large whitehead.
Term
Acclimatize
Definition
To become adapted to the surrounding environment, in particular to become adapted to heat or cold.
Term
Acetaminophen
Definition
Paracetamol (American)
Term
Achilles Tendon
Definition
The calcaneal tendon. Attaches the calf muscles to the heel. So named after the Greek legend of Achilles.
Term
Acromioclavicular Joint
Definition
joint t the top of the shoulder, where the acromion process of the scapula and the lateral end of the clavicle join. An acromio-clavicular ("AC") injury may be diagnosed by point tenderness over the AC joint after a fall onto the shoulder.
Term
Acromion
Definition
Also known as the acromion process of the scapula; the projection of the scapula, at the top of the shoulder, that connects to the clavicle.
Term
Adduct
Definition
To move toward the midline. Contrasted to ABduct, which means to move away from the midline.
Term
Adrenal Cortex
Definition
The outer part of the adrenal gland, as opposed to the inner past which is known as the adrenal medulla. The adrenal cortex secretes steroid hormones including cortisol.
Term
Adrenal Medulla
Definition
The central part of the adrenal gland, that secretes hormones such as adrenaline (epinephrine). The adrenal glands are located on top of the kidneys.
Term
Adrenergic
Definition
Pertaining to the hormone adrenaline (epinephrine) or its effects. Adrenergic drugs are those that have effects similar to those of adrenaline.
Term
Aerobic Bacteria
Definition
Bacteria that need oxygen to live. Aerobic = Needing oxygen to live.
Term
Aetiology
Definition
the causes of a disease, or the science of studying such causes.
Term
Affect
Definition
Mood. When used in the context of the psychological or mental status of an individual, affect means the physical signs of emotion; someone who shows no signs of emotion may be considered to have a flattened affect which may be suggestive of an underlying depressive disorder
Term
AIDS
Definition
Acquired Immunodeficiency Syndrome. A slowly progressive but uniformly fatal disease, resulting in infection of, and depletion of, a certain subset of white blood cells (T lymphocytes), resulting in susceptibility to many infections which would not otherwise harm the individual. AIDS is caused by the Human Immunodefi­ciency Virus (HIV)
Term
Albumin
Definition
The predominant protein in blood plasma.
Term
Allergen
Definition
Something that causes an allergic reaction. Examples include ragweed, pollen, penicillin, and shellfish.
Term
ALS
Definition
Advanced Life Support. A level of medical care involving drugs, IVs, and other invasive techniques.
Term
Alum
Definition
A chemical sometimes used as an aid in wilderness water disinfection.
Term
Alveoli
Definition
The small terminal air sacs in the lung.
Term
AMS
Definition
Acute Mountain Sickness.
Term
Anaerobic bacteria
Definition
bacteria that live without oxygen. In the human body, anaerobic bacteria are found primarily in the mouth and in the intestines. Some bacteria grow more abundantly without oxygen but can still grow when exposed to oxygen - these are facultative anaerobes. Others cannot live in the presence of oxygen and these are known as obligate anaerobes.
Term
Anaerobic
Definition
living by preference, or by necessity, without oxygen (usually applied to species of bacteria).
Term
Analgesia
Definition
Relief of pain.
Term
Analgesics
Definition
Medications to decrease pain.
Term
Anaphylaxis
Definition
A massive immediate allergic reaction characterized by swelling of the mucous mem­branes of the airways and shock. Histamine is a major component of anaphylactic shock.
Term
Anatomical Snuffbox
Definition
a small hollow between two tendons, at the base of the thumb. The scaphoid bone can be palpated here, and persistent point tenderness here is sufficient to have a high degree of suspicion for a fracture of the scaphoid bone. A scaphoid fracture is often difficult to see on the initial X-ray, but if the clinical picture fits, the wrist must be put in a cast for six weeks to allow proper healing.
Term
Anecdotal
Definition
evidence from individual cases, as opposed to more rigorous evidence from planned scientific studies.
Term
Aneurysm
Definition
A balloon-like weakening in the wall of a blood vessel.
Term
Angiogram
Definition
An X-ray of blood vessels made by injecting a special X-ray opaque dye into the vein or artery
Term
Angulate
Definition
to form an angle. An angulated fracture has a bend where there normally isn't one.
Term
Anomia
Definition
inability to find the right words.
Term
Anorexia
Definition
Loss of appetite.
Term
Anticonvulsant
Definition
A medication to help prevent or stop a seizure (convulsion).
Term
Antihistamine
Definition
A medicine that blocks the inflammatory affects and/or the release of histamine, as found in many allergic conditions.
Term
Anus
Definition
The opening at the lower end of the digestive tract, though which faeces are passed.
Term
Apocryphal
Definition
Referring to a story; means that it illustrates an important point but isn't necessarily true in detail.
Term
Appendicitis
Definition
Inflamation of the appendix, a small sac or "appendage" that protrudes from the end of the large intes­tine where it joins the small intestine in the right lower quadrant.
Term
ARDS
Definition
Adult Respiratory Distress Syndrome. Also known as "shock lung." Caused by capillaries in lung leaking protein (and thus fluid) into normally air containing areas (alveoli). A not uncommon feature in the severely injured multi-trauma patient.
Term
Arthritis
Definition
Inflammation of the joints.
Term
Ascites
Definition
Accumulation of fluid in the peritoneal cavity which may cause abdominal swelling if it is of a sufficient volume. Causes include
Term
Ataxia
Definition
An abnormal walking gait
Term
Atelectasis
Definition
Collapse of small segments of lung.
Term
Autoimmune
Definition
When you develop an allergic (immune) reaction against part of your own body. This may be caused by an infection with a germ that 'looks" like a part of your own body. Your lymphocytes then attack the part of your body as well as the germ. Examples include inflammation of the bowel, joints, biliary system and thyroid gland.
Term
Autonomic Nervous System
Definition
The part of the nervous system controlling involuntary actions (e.g. the heart rate), as opposed to the voluntary nervous system, which controls voluntary actions (e.g. movement). The autonomic nervous system is responsible for controlling the state of internal organs. It is divided into two main parts - the Sympathetic and Parasympathetic. Activation of the sympathetic portion of the autonomic nervous system causes an elevation in blood pressure, an increase in heart rate, and generally makes the body ready for "fight or flight." The parasympathetic nervous system is responsible for rest and digestion and can be considered predominant when the individual is in a relaxed state.
Term
Avulsion Fracture
Definition
when a strong pull by a tendon or ligament pulls off a piece of bone.
Term
Axial
Definition
along the long axis of a limb.
Term
Axilla
Definition
armpit.
Term
Bacteria
Definition
Small single-celled organisms. They are distinguished from the cells of more complex organisms by, among other things, their small size and lack of a nucleus.
Term
Barbiturate
Definition
A class of sedative drugs. Phenobarbital is an example.
Term
Basal metabolic rate
Definition
the rate the human body makes heat "at idle."
Term
Basilar
Definition
Base, as in a basilar skull fracture at the base of the skull.
Term
Battle's Sign
Definition
Postauricular ecchymosis (bruising behind the ear), suggesting a basilar skull fracture.
Term
Bedsores
Definition
Decubitus ulcers. Skin breakdown and ulceration caused by pressure. A form of pressure necrosis. Often caused by being in one position for too long. Beware the prolonged use of hard spinal boards.
Term
Benzodiazepine
Definition
A class of drugs that relaxes muscles, masks anxiety, and causes sedation. Diazepam (e.g., Valium®) is a well-known example. Others include chlordiazepoxide (e.g., Librium®), lorazepam (e.g., Ativan®), alprazolam (Xanax®), and midazolam (Versed®).
Term
Berger's Disease
Definition
Found mostly in heavy smokers of Asian origin, is essentially severe vasoconstriction that causes necrosis and gangrene of fingers.
Term
Beta-blocker
Definition
A medication that blocks the beta adrenergic receptors; these are receptors that respond to epinephrine and related hormones by increasing heart rate and blood pressure, causing sweaty palms, and similar reactions. Thus, beta blockers are used to treat hypertension and to "rest" the heart after a myocardial infarction.
Term
Beta-Haemolytic
Definition
Refers to types of bacteria that cause a particular kind of lysis (disruption) of red blood cells when grown in culture. The type of "strep" (Streptococcus) that sometimes causes kidney and heart damage is beta-haemolytic.
Term
Biceps Muscle
Definition
the major muscle of the front of the upper arm which, when contracted, causes flexion at the elbow joint. At the shoulder, it has two tendons and two attachments, thus the name "biceps." The "triceps" muscle has three attachments at one end.
Term
Bilaterally Symmetrical
Definition
One side is the mirror image of the other.
Term
Bile Pigments
Definition
Dark chemicals that are secreted into the gastrointestinal tract by the liver. They give stool its characteristic dark brown colour. Bile pigments are waste products from the haemoglobin molecules of dead red blood cells.
Term
Blood-brain Barrier
Definition
Many medicines, if they appear in the blood, diffuse into tissues almost immediately. However, not as many medicines pass from the blood into the brain, suggesting that there is something lining the brain blood vessels that prevents substances from diffusing into the brain. This gives rise to the term "blood-brain barrier".
Term
Bolus
Definition
A single large dose of a medication, as contrasted with a continuous infusion via an IV or a specific amount of a drug or fluid given rap­idly as a single dose.
Term
Bronchial Breath Sounds
Definition
Sounds like those normally heard only over the trachea or major bronchi. When heard over part of the lung it suggests consolidation the most common cause of which is pneumoma.
Term
Bronchospasm
Definition
Narrowing of small airways in the lungs. Bronchospasm may come from asthma or from inhalation injury. Bronchospasm may also contribute to a COPD exacerbation.
Term
Buffer
Definition
Used in reference to reactive chemicals such as acids or iodine. To "buffer" is to chemically hold some of the acid or iodine in reserve. In this way, there is a low concentration of the acid or iodine, but when this is used up, more is released from the buffer chemical.
Term
BuIlous Impetigo
Definition
A severe skin infection, mostly in children, characterized by fragile blisters. ("Bullous" means having blisters.)
Term
Calcaneofibular ligament
Definition
the middle of the three ankle ligaments under the lateral malleolus.
Term
Calcaneus
Definition
heel bone.
Term
Calorie
Definition
the calorie (with a small c) is the amount of energy needed to raise one gram of water one degree Centigrade. The Calorie (large C), known as the kilocalorie or kilogram-calorie, is the amount of energy needed to raise a kilogram of water (1000 grams, or a litre) one degree Centigrade.
Term
Campylobacter
Definition
The name of a family of bacteria known to cause dysentery in humans.
Term
Capillary
Definition
The smallest blood vessels. Site of gas and nutrient exchange.
Term
Cardiogenic Shock
Definition
Pump failure. Generalized poor perfusion from inadequate cardiac output, often from a myocardial infarction. When a porion of the muscle which forms the pumping heart wall dies, the affectiveness of the heart as a pump diminishes, sometimes to the point where the heart cannot maintain an adequate output.
Term
Caries
Definition
Also known as cavities, these erosions into a tooth are caused by the action of mouth bacteria.
Term
Cataracts
Definition
Opacities in the lens of the eye.
Term
Catecholamines
Definition
Hormones such as epinephrine and norepinephrine.
Term
Cathartic
Definition
Something that induces loose bowel movements.
Term
Catheter-tip Syringe
Definition
A syringe that has a large tip of a size to fit nasogastric (NG) tubes, Foley urinary catheters, and chest tubes. Most syringes have a "Luer-Lock" tip that fits needles and intravenous tubing.
Term
Cellulitis
Definition
A skin infection which is characterized by spread of the bacteria through the interstitial spaces of the tissue.
Term
Chest PT
Definition
Chest Physical Therapy. Strictly speaking, chest PT includes a variety of techniques. However, it is commonly used to refer to clapping.
Term
Cheyne-Stokes Breathing
Definition
Periodic breathing, with waxing, waning, and periods of apnoea (no breathing). Common in congestive heart failure, and at altitude.
Term
Cirrhosis of the Liver
Definition
Scarring of the liver. Leads to fluid retention, especially in the abdomen (ascites), and to oesophageal varices. Most common cause in Western society is abuse of alcohol. A common cause in the developing world is hepatitis.
Term
Civil Suit
Definition
A legal action where a person attempts to reclaim money from someone who allegedly wronged the person; distinguished from a criminal action, which is brought by the government against a person for violating the law.
Term
Clapping
Definition
pounding moderately on the chest, with a cupped hand, with the patient in a slightly head-down position with the affected lung uppermost.
Term
Clavicle
Definition
the collar bone.
Term
Cluster Headache
Definition
A type of vascular headache characterized by occurring in clusters over a period of several days. The underlying cause may be similar to migraine headaches but the distinguishing feature of a migraine is that it is always one-sided.
Term
CO
Definition
Carbon monoxide.
Term
CO2
Definition
Carbon dioxide.
Term
Coagulopathy
Definition
Abnormal blood clotting.
Term
Cold diuresis
Definition
the effect of cold on the vascular system and kidneys to cause an increase in urine output.
Term
Colicky
Definition
When referring to pain, means pain that comes in spasms, rather than being continuous.
Term
Collateral ligaments
Definition
ligaments on either side of a joint. They keep the joint from bending sideways.
Term
Colloids
Definition
Fluids that contain water and suspended particles such as proteins. These particles do not settle out because they are so small, but are not truly "dissolved." Examples include blood plasma, dextran (a type of starch suspension) and albumin (a common blood protein).
Term
Coma Position
Definition
Left lateral decubitus position.
Term
Compartment Syndrome
Definition
Swelling of one of the muscular compartments of a leg or less commonly an arm, leading to pressures so high that nerves are damaged and perfusion is cut off.
Term
Compensation
Definition
The use of defence mechanisms to return the body to a normal state. An example is the way blood pressure does not drop immediately when blood is lost. This is achieved by reducing the affective volume of the circulatory system through constriction of blood vessels.
Term
Conjunctival Sac
Definition
The inside of the eyelid.
Term
Conjunctivitis
Definition
Inflammation of the lining of the eye and eyelids.
Term
Conservation of Energy (Law)
Definition
Energy cannot be created or destroyed; it can be stored as potential energy, or transferred from one object to another.
Term
Consolidation
Definition
An area of lung tissue that is filled with fluid and "solid" rather than spongy like normal lung. Indicative of an infection - pneumonia.
Term
Cornea
Definition
The clear covering of the front of the eye.
Term
Coronal Plane
Definition
the anatomic plane that divides the body into front and back.
Term
Costovertebral Angle
Definition
The part of the back lying on either side of the spine at the bottom of the posterior rib cage. Also known as the renal angle. Used as a landmark for the underlying kidney. Tenderness to a firm tap here suggests a disorder of the kidney.
Term
Counter-current heat exchange
Definition
When the deep arteries and veins of the arms and legs can exchange heat with one another, allowing perfusion of cold extremities without loss of heat.
Term
Crepitus
Definition
crunching on palpation. Caused by broken bones or air under the skin.
Term
Critical Incident Stress Debriefing
Definition
CISD is a form of limited intervention that is thought to be effective in preventing many of the ill effects resulting from exposure to a traumatic incident and its attendant immediate and delayed stress reactions. The evidence supporting it's use is weak and in some cases compulsory debriefing after a stressful event may be counter-productive.
Term
Critical incident
Definition
An incident causing such a high level of psychological stress that many exposed to it develop immediate or delayed stress reactions.
Term
Croup
Definition
A viral upper respiratory infection, primarily in children, which causes swelling of the large air­ways just under the larynx and a stridorous cough.
Term
Cruciate
Definition
Cross-shaped. A common reference relates to the cruciate ligaments of the knee which are configured in shape of a cross and stabilise the knee.
Term
Crystalloid
Definition
A fluid containing water and salts. Normal Saline, Dextrose and Lactated Ringer's solution are examples of crystalloids.
Term
Culture
Definition
A culture is a sample from a suspected infection that is placed on a medium (e.g. agar in a Petri dish) that supports the growth of the suspected microbe; the medium is checked at intervals for growth of the microbe.
Term
Cumulative Stress Reaction
Definition
a set of abnormal and maladaptive responses to chronic high levels of stress.
Term
CVA
Definition
Cerbrovascular Accident or Stroke
Term
Cycloplegics
Definition
Medicines that paralyze eye muscles and dilate the pupil.
Term
D5W
Definition
An intravenous solution of 5% dextrose (glucose) in water.
Term
Debride
Definition
To trim away dead tissue.
Term
Decompensation
Definition
Failure of defence mechanisms to cope with external stresses.
Term
Decongestant
Definition
A medicine that shrinks swollen mucous membranes. These medicines are vasoconstrictors. An example is pseudo-ephedrine
Term
Decubitus Position
Definition
See left Lateral Decubitus posi­tion.
Term
Decubitus ulcers
Definition
See Bedsores
Term
Delayed Stress Reaction
Definition
a psychological reaction, characterized by unusual physical, emotional, cognitive, and behavioural signs and symptoms, occurring weeks or months after exposure to a critical incident, and often triggered by a seemingly innocuous stimulus.
Term
Delegated Practice
Definition
A legal doctrine that allows the doctor to delegate functions to others.
Term
Deltoid ligament
Definition
the large ligament under the medial malleolus at the ankle. Not to be confused with the deltoid muscle at the shoulder. Deltoid means shaped like a Greek delta, or triangle.
Term
Deltoid Muscle
Definition
the large muscle on the lateral aspect of the shoulder. Not to be confused with the deltoid ligament under the medial malleolus at the ankle. Deltoid means shaped like a Greek delta, or triangle.
Term
Delusions
Definition
Fixed and firm beliefs that have no basis in reality and may be a sign of a major underlying psychiatric illness.
Term
Dendritic
Definition
In a branching pattern.
Term
Dependent oedema
Definition
Oedema of the lower parts of the body. When one is standing or sitting most of the time, this becomes pedal oedema in the ankles; when lying, it becomes presacral oedema in the lower back.
Term
Dialysis
Definition
the diffusion of solute molecules through a semi-permeable membrane, passing from the side of higher concentration to that of the lower; a method sometimes used, in patients with defective renal function, to remove from the blood elements that are normally excreted in the urine.
Term
DIC
Definition
Disseminated intravascular coagulation.
Term
Dictum
Definition
rule.
Term
Differential Diagnosis
Definition
A list of possible causes of a particular sign, symptom, or combination of signs and symptoms.
Term
DIPJ
Definition
Distal lnterphalangeal Joint. The finger or toe joint nearest the end of the digit.
Term
Disimpaction
Definition
The technique of placing a gloved finger into the rectum and breaking up and manually removing impacted stool.
Term
Disseminated Intravascular Coagulation
Definition
Widespread inappropriate clotting throughout the entire vascular system, causing clots where they're not needed, and causing a depletion of clotting factors for use in areas that actually need a clot. Also known as DIC.
Term
Diuretics
Definition
A medication that causes an increased urine output. Lasix® (furosemide) is a strong, commonly used diuretic. Acetazolamide (Diamox®) is a mild diuretic.
Term
Diverticulitis
Definition
Inflammation in an acquired out-pouching of the large intestine (a diverticulum). Diverticulosis is the state of having diverticula, while diverticulitis is an actual inflammation usually due to infection.
Term
DM
Definition
Diabetes Mellitus.
Term
D.O.
Definition
Doctor of Osteopathy. A degree offered by Osteopathic medical schools in the USA. DOs are now licensed to practice medicine in all states in the US. A minority of physicians in the U.S. are DOs.
Term
Dorsiflex
Definition
movement toward the dorsum (dorsal side). For example, dorsiflexion at the ankle means moving the foot up.
Term
Drop Attack
Definition
Acute syncope from a cardiac arrhythmia.
Term
DVT
Definition
Deep Venous Thrombus. A blood clot, commonly in the deep veins of the leg.
Term
Dysentery
Definition
Infectious bacterial diarrhoea when bacteria invade the wall of the intestine, usually causing high fever, abdominal pain and crucially, bloody diarrhoea.
Term
Dysmenorrhoea
Definition
Menstrual pain.
Term
Ecchymosis
Definition
Bruising.
Term
Ectopic Pregnancy
Definition
A pregnancy outside the uterus. An ectopic pregnancy may rupture and cause an acute abdomen or enough bleeding to cause death.
Term
EMT
Definition
Emergency Medical Technician. A person who has completed training according to the relevant national authority (U.S. Department of Transportation) and who has met the educational objectives of the curriculum laid down, and is functioning as a part of an EMS system. Also refers generically to EMTs who have gone on to higher levels of training up to EMT-P.
Term
EMT-P
Definition
Emergency Medical Technician-Paramedic. A person who has completed training according to the relevant national authority (U.S. Department of Transportation) and who has met the educational objectives of the curriculum laid down, and is functioning as a part of an EMS system. Whereas "plain" EMTs (EMT-As or EMT-Ambulances, also more properly known as EMT-Basics) can only perform Basic Life Support techniques, EMT-Ps can perform Advanced Life Support techniques under a doctor's orders.
Term
Encephalitis
Definition
inflammation of the brain tissue indicating an underlying infection.
Term
Endemic
Definition
a disease that is constantly present in a community.
Term
Endorphins
Definition
Narcotic-like chemicals that are produced in the brain or spinal cord to block pain.
Term
Endotracheal
Definition
Relating to the inside of the trachea e.g. endotracheal tube (ETT).
Term
ENT
Definition
Ears, Nose, and Throat. A medical specialty. Also referred to as otorhinolaryngology
Term
Entamoeba histolytica
Definition
A protozoan amoeba parasite known to cause dysentery in humans.
Term
Envenomated Bites
Definition
Bites of an animal, insect or arachnid that contain venom (poison). Not all bites of poisonous species are envenomated.
Term
EOMI
Definition
Pnemonic. Extra Ocular Motions Intact. Means the patient can look left, look right, look up, and look down.
Term
Epidemiology
Definition
The statistical study of injury and illness. Used to assess diseases, medical treatment and preventive measures.
Term
Epididymis
Definition
A small organ that sits behind and just on top of the testicle. Part of the apparatus of sperm maturation and storage.
Term
Epiglottitis
Definition
A bacterial infection of the epiglottis, primarily in children, that causes severe pain, drooling and stridor, which may lead to airway obstruction.
Term
Epinephrine
Definition
Also known as adrenaline. The major hormone in the blood responsible for the sympathetic "fight or flight reaction" (sweaty palms, tachycardia, nervousness).
Term
Epistaxis
Definition
Nosebleed.
Term
Eponychium
Definition
the fold of skin-like tissue around the margin of a fingernail or toenail.
Term
Erythema Migrans
Definition
A slowly-spreading circular red rash that is a sign of Lyme Disease.
Term
Eschar
Definition
A hard, leathery material that forms following third degree burns.
Term
Escharotomy
Definition
Cutting into the dense eschar that results from a third-degree burn. This is done to prevent circumferential constriction (around a limb or even the chest) which may otherwise impede circulation or cause difficulty breathing.
Term
Eugenol
Definition
Oil of Cloves. A local anaesthetic used in dental work.
Term
Eukaryotes
Definition
Cells that are larger and more complex than single-celled prokaryotes. Plants and animals are all made up of eukaryotic cells.
Term
Eustachian Tubes
Definition
The tubes that drain the middle ear into the back of the throat.
Term
Evert
Definition
Turn outward.
Term
Evertion
Definition
When referring to motions of the ankle, the movement made when trying to place the soles of both feet together. This is the most common mechanism for an ankle sprain.
Term
Exacerbate
Definition
to make worse.
Term
External Rotation
Definition
rotation away from the midline.
Term
Extraocular Motions
Definition
Movements of the eyes (up, down, and to both sides).
Term
Extrapyramidal Symptoms
Definition
Abnormal muscle contractions of the back, neck, or face. Sometimes seen as a side effect of antipsychotic medicines such as haloperidol (e.g., Haldol®), or from antinausea medicines such as prochlorperazine (e.g., Stemetil®). A dystonic reaction is one type of extrapyramidal symptom.
Term
Exudate
Definition
A thick, yellow, white, or gray material that exudes from inflamed tissues. For example, most second degree burns develop an exudate.
Term
Fasciotomy
Definition
Cutting open the fascia. Fascia are the fibrous membranes that enclose muscular compartments in the legs and arms. Used to relieve pressure from compartment syndrome.
Term
Feedback
Definition
a type of control system that measures a quantity (e.g., temperature), then changes things based on that quantity. A house thermostat is a good example of a (negative) feedback system.
Term
Fever
Definition
an elevation in body temperature due to a higher set-point of the body thermostat, usually due to an infection. This is in contrast to an increase in temperature due to overheating despite the best efforts of body cooling mechanisms. This is heat illness, not fever.
Term
Fibrinolytic
Definition
Tending to break down fibrin, a major component of blood clots.
Term
Flank
Definition
The side of the torso.
Term
Flexed
Definition
Bent.
Term
Flora
Definition
Plant life. In regards to humans, it refers to the normal population of bacteria found on the skin, in the mouth, in the GI tract, and elsewhere. In some ways, we are dependent on this "normal flora" for our well-being. Cows would starve without their GI bacteria that break down cellulose into a digestible form.
Term
Foley catheter
Definition
A catheter placed through the urethra into the urinary bladder to allow free drainage of urine. Foley catheters may be placed to allow measure urine output, relive urinary retention or treat incontinence.
Term
Fomites
Definition
Tiny droplets filled with bacteria that come out when you sneeze or cough.
Term
Fungi
Definition
A group of organisms including moulds, mildew, toadstools, and mushrooms, distinguished by several features from animals and plants.
Term
Gait
Definition
The manner in which a person walks. e.g. an antalgic gait is an abnormal pattern of walking caused by pain in the legs or back.
Term
Gangrene
Definition
Dry gangrene refers to death of tissue (necrosis) with shriveIing and blackening, as after frostbite. Wet gangrene refers to infected dead tissue, and gas gangrene refers to a specific and deadly type of infection (Clostrdium perfringens) associated with formation of gas bubbles within the tissue. Either way, gangrene is death of tissue.
Term
Gastritis
Definition
Diffuse irritation of the stomach lining.
Term
Gastroscope
Definition
A fiberoptic device used to look for ulcers and other abnormalities in the oesophagus and stomach; it is passed down the oesophagus. Also known as OGD
Term
Germs
Definition
Invisible living agents of disease, including protozoa, bacteria, viruses, fungi and prions.
Term
GI Bleeding
Definition
bleeding from the gastrointestinal tract. Causes ulcers in the stomach or duodenum, gastritis, oesophageal varices (dilated veins), or from a variety of problems with the large or small bowel.
Term
Gingivitis
Definition
Infection of the gums.
Term
Glaucoma
Definition
increased pressure of the fluid within the eye. Extremely painful and if untreated, can lead to blindness.
Term
Glenohumeral joint
Definition
The joint between the head of the humerus and the glenoid of the scapula. The largest of the joints making up the shoulder
Term
Glenoid Fossa
Definition
The articular surface of the scapula which forms a joint with the head of the humerus. The "socket" of the ball-and-socket shoulder joint.
Term
Globulin
Definition
A concentrated preparation of antibodies against the tetanus poison.
Term
Globus hystericus
Definition
sensation of a lump in the throat due to stress.
Term
Glomus
Definition
a small organ in the skin that is thought to act as a switch to switch blood between the superficial and deep circulation.
Term
Glucose
Definition
Also known as dextrose. The simplest kind of sugar. It is the only kind the brain can use, and is the form of sugar found in the blood. Other more complex or different sugars are found in foods (e.g., lactose in milk, fructose in fruit). Sucrose is table sugar.
Term
Glycogen
Definition
A complex carbohydrate stored in muscle and liver. It is an important source of "quick energy."
Term
Golden Day
Definition
A concept used in reference especially to aircraft crashes. The number of survivors markedly decreases over the first 24 hours after a crash.
Term
Golden Hour
Definition
In relation to trauma, the concept of an injured patient receiving life saving surgery within 1 hour. Statistically, trauma patients survival drops if surgery is delayed longer than an hour.
Term
Good Samaritan Law
Definition
A law in the USA that exempts certain people from liability due to a civil action (prevents people from suing them) if they are offering emergency aid, generally without compensation, and in good faith. Good Samaritan Laws vary from state to state.
Term
Gram Staining
Definition
A method of staining bacteria using iodine and other stains. Bacteria that stain deep purple are called "Gram positive," and those that remain light pink are called "Gram negative." For example, Staphylococcus and Streptococcus species are Gram positive, whereas E. coli is gram negative. Gram positive and negative bacteria are also very different in many other ways, for example, their susceptibility to various antibiotics.
Term
H2 Blockers
Definition
Block the effects of histamine on acid secretion in the stomach. Common H2 blockers, including ranitidine (Zantac®) and cimetidine (e.g., Tagamet®), are often prescribed for ulcer disease. These drugs have been largely, but not exclusively, been surpassed by another class of drugs, the PPIs (Proton Pump Inhibitors).
Term
HACE
Definition
High altitude Cerebral (O)edema.
Term
HAFE
Definition
High altitude flatus expulsion.
Term
Hallucinations
Definition
sensory impressions of objects or people that do not exist in reality; hallucinations may be visual, auditory, or even tactile or olfactory (smell)
Term
HAPE
Definition
High altitude pulmonary (O)edema.
Term
HARH
Definition
High altitude retinal haemorrhage.
Term
Hartmann's solution
Definition
a physiological solution of salts similar to Ringer's solution (see below).
Term
Heart Block
Definition
An abnormality of the cardiac conduction system.
Term
Heat syncope
Definition
fainting from heat illness.
Term
Haematoma
Definition
A collection of blood in soft tissues.
Term
Haemolytic Reaction
Definition
An allergic reaction to incompatable transfused blood that causes lysis (rupture) of red blood cells. This causes severe illness. Haemolytic reactions are not exclusive to incompatable tranfused blood and may occur in other circumstances.
Term
Haemorrhoids
Definition
Dilated veins around the anus or inside the anal canal. May bleed and can protrude.
Term
Haemotympanum
Definition
Blood behind the eardrum (tympanic membrane).
Term
Heparin
Definition
An anticoagulant (blood thinner).
Term
Hepatitis
Definition
inflammation of the liver; usually but not always caused by a viral infection.
Term
Hernia
Definition
Protrusion of an organ or tissue out of the cavity in which it normally resides. Common examples are umbilical or inguinal hernias.
Term
Histamine
Definition
A substance found in certain cells in the skin and blood. When released, histamine causes inflammation (bronchial constriction, skin and mucous membrane swelling, and itching). Histamine effects are blocked by antihistamine drugs.
Term
HIV
Definition
Human Immunodeficiency Virus.
Term
Hives
Definition
see Urticaria.
Term
Homan's Test
Definition
If the foot is forcibly dorsiflexed (pushed up), and the resulting traction on the calf causes pain, the test is positive. A positive test is associated with (but not diagnostic of) a DVT. Theoretical risk of dislodging a clot in the leg which can travel to the lung means that it is not wise to over-do Homan's test.
Term
Homeostasis
Definition
the state of dynamic equilibrium. More simply, keeping something the same despite things that tend to disturb it. An example is human thirst - when we get dehydrated, our thirst drives us to drink and replenish body water stores. Thirst is one of the homeostatic mechanisms that tends to keep body water at a stable level.
Term
Homeotherm
Definition
a "warm-blooded" animal, including mammals, but not reptiles, which are poikilotherms ("cold-blooded"). Homeotherms keep their body temperatures very constant via sophisticated control mechanisms. The core temperature of poikilotherms, however, varies more widely with the surrounding temperature.
Term
Hormone
Definition
A chemical messenger released in one part of the body that travels through the blood and has an effect in a distant site. Epinephrine is a hormone, as is hydrocortisone.
Term
Humerus
Definition
the bone of the upper arm.
Term
Hunting phenomenon
Definition
sudden bursts of blood flow (and warmth) in a very cold extremity.
Term
Hymenoptera
Definition
The order of the animal kingdom that includes bees, wasps, hornets, and ants.
Term
Hyperadrenergic States
Definition
When adrenaline (epinephrine) levels are high and the sympathetic nervous system is activated. An example would be when you are being chased across a field by a large bull.
Term
Hyperglycaemia
Definition
high blood sugar.
Term
Hyperkalaemia
Definition
high potassium in the blood.
Term
Hyperosmolar
Definition
A solution with a higher osmotic pressure (more dissolved solutes) than normal blood.
Term
Hyperreflexia
Definition
Increased deep tendon reflexes. Usually from damage to the brain or spinal cord.
Term
Hypersomnia
Definition
sleeping too much.
Term
Hypertonic Saline
Definition
A salt solution more concentrated (having a higher osmotic pressure) than blood.
Term
Hypertrophy
Definition
Increase in size.
Term
Hypervigilance
Definition
increased suspicion and attention to one's environment.
Term
Hypokalaemia
Definition
a low level of potassium in the blood.
Term
Hyponatraemia
Definition
a level of sodium ('natrum', in Latin) in the blood that is less than normal. This may come from a lack of sodium or an excess of water in the blood.
Term
Hypotension
Definition
Low blood pressure.
Term
Hypothalamus
Definition
the part of the brain that serves as a control centre for many bodily functions, including temperature and water balance.
Term
Hypothyroidism
Definition
Low thyroid hormone levels. Thyroid hormone regulates the metabolic rate.
Term
Hypoventilation
Definition
Inadequate rate or depth of breathing.
Term
Hypovolaemia
Definition
Low blood volume. Normal for an adult is 5-6 litres.
Term
Hypoxaemia
Definition
A low level of oxygen in the blood.
Term
Hypoxia
Definition
A low level of oxygen.
Term
ICP
Definition
Intra Cranial Pressure. The pressure inside the skull.
Term
IDDM
Definition
Juvenile-onset or Insulin-Dependent Diabetes Mellitus. Now called Type I DM.
Term
Ileus
Definition
Lack of normal peristaltic movements moving food/faecal material along through the stomach and intestines. Caused by illness, electrolyte disturbance, trauma or surgery.
Term
IM
Definition
Intramuscular or into the muscle
Term
Immediate Stress Reaction
Definition
a psychological reaction, characterised by unusual physical, emotional, cognitive, and behavioural signs and symptoms, occurring at, or soon after, exposure to a critical incident.
Term
Impacted
Definition
Stuck.
Term
Impetigo
Definition
A superficial skin infection caused by staphyllococcal aureus. Characterized by clear fluid leaking from the area, and a golden crust. See also Bullous Impetigo.
Term
Incontinence
Definition
loss of voluntary control leading to urination or defecation.
Term
Incubation period
Definition
The time lag from exposure to a contagious disease until the development of symptoms.
Term
Infarction
Definition
Death of tissue from lack of blood supply and hence oxygen
Term
Inferior Rectus Muscle
Definition
A muscle on the bottom of the eye; when it contracts, the eye rotates so it looks down. Entrapment of this muscle in a blow-out fracture of the lower part of the orbit can prevent the eye from looking up. That is, the muscle becomes stuck in the fracture site.
Term
Inflammation
Definition
A reaction of the body to injury or infection, characterized by redness, warmth, pain, swelling, and decreased function. These mechanisms protect the area from further injury and infection, and help institute healing. The response may also be disproportionate and damaging, e.g. in anaphylaxis.
Term
Inguinal
Definition
Relating to or affecting the region of the groin.
Term
Injury Potential
Definition
The likelihood of particular injuries for a particular mechanism of injury.
Term
Insensible perspiration
Definition
Water losses through sweating and respiration which occur all of the time, even at cooler temperatures, and of which we are generally unaware. Approximately 700 ml a day when inactive at room temperature.
Term
Insomnia
Definition
Inability to go to sleep normally.
Term
Internal Rotation
Definition
rotation toward the midline.
Term
Interstitial fluid.
Definition
The fluid on the outside of the body's cells. Formed from plasma leaking out of small veins and capillaries. The fluid then drains into lymph vessels, which then drain back into the large central veins in the chest. Also known as intercellular fluid. Along with the blood, interstitial fluid makes up the extracellular fluid volume.
Term
Intra-articular
Definition
within the joint. When referring to fractures, it means that the fracture line extends into the joint. This tends to make proper healing more difficult.
Term
Intracranial
Definition
Inside the head.
Term
Intravascular
Definition
Within the blood vessels.
Term
Intravenous Pyelogram (IVP)
Definition
A technique involving IV injection of dye, followed by X ray imaging as dye is excreted by the kidneys, outlining the ureters and any obstructing stones or other abnormalities.
Term
Inversion
Definition
When referring to motions of the ankle, to the movement made when trying to place the tops of both feet together, and the soles facing outward.
Term
Iris
Definition
The coloured part of the eye.
Term
Ischaemia
Definition
Inadequate blood flow. Damage subsequently occurs in tissues if oxygen delivery by the blood cannot keep pace with oxygen demand.
Term
IV
Definition
Intravenous. Inside the vein.
Term
Jaundice
Definition
Yellow colouring of the skin and eyes from the build up of bile pigments, often from liver failure or hepatitis.
Term
Jewel Weed Plant
Definition
A plant with characteristic yellow or orange blossoms and translucent stems that grows near stinging nettles. The sap of this plant is an effective antidote when rubbed on nettle stings.
Term
Joint Capsule
Definition
a fibrous sac around a joint that supports the joint and contains the joint fluid inside the synovial membrane.
Term
Kcal
Definition
kilocalorie. The amount of energy needed to warm a litre of water (1000 ml) by one degree Centigrade. Daily food consumption and energy expenditure averages about 2500 Kcal for a sedentary 70 Kg man, but ranges up to 4000 Kcal or higher when on difficult field tasks.
Term
Kinematics
Definition
The physics of trauma. Particularly, the ways that the laws of motion can help explain injury.
Term
Kinetic Energy
Definition
Energy associated with mass in motion. Kinetic energy = Mass x (Speed)2.
Term
Laryngitis
Definition
Inflammation of the vocal cords leading to hoarseness.
Term
Laryngospasm
Definition
Spasm of the vocal cords leading to airway obstruction.
Term
Law Suits
Definition
See Civil Suits.
Term
Left Lateral Decubitus Position
Definition
Also known as the coma position, 3/4 prone position or recovery position. The patient is on the left side, with knees and hips slightly bent, and with the head on the flexed right arm, tilted slightly face down.
Term
Leukocytes
Definition
white blood cells.
Term
Loading Dose
Definition
A large dose of a drug, given at the beginning of a course of the drug, to rapidly build up therapeutic levels of the drug.
Term
Longitudinal
Definition
lengthwise.
Term
Lyme Disease
Definition
An infectious disease, transmitted by the bite of certain ticks. Named after the Connecticut town where the disease was first discovered.
Term
Lymph nodes
Definition
Small subcutaneous bumps that are found in many places, especially in the neck, armpit, and groin. They lie along lymphatic vessels. Lymph nodes are' 'factories" for certain kinds of white blood cells, and enlarge in response to infection or, less commonly, cancer.
Term
Lymphangitis
Definition
Infection spreading up lymph vessels. Characterized by a red, warm line along the course of the lymph vessels.
Term
Lymphatics
Definition
The network of lymphatic vessels. They return fluid that 'leaks' out of capillaries back to the central circulation. Lymph nodes are found along Iymphatics.
Term
Lymphocyte
Definition
A type of white blood cell which mainly fights viral infections.
Term
Macular
Definition
refers to a flat rash, as compared to a papular rash, which is a rash with palpable bumps.
Term
Malleoli
Definition
plural of malleolus, see below.
Term
Malleolus
Definition
The bony prominences on either side of the ankle. The medial and lateral malleoli are formed by the distal tibia and fibula, respectively.
Term
Mallory-Weiss Tear
Definition
A small rip in the lining of the GI tract at the junction of the oesophagus and the stomach. Usually caused by vomiting or attempting to vomit. A cause of GI bleeding.
Term
Mannitol
Definition
A diuretic. A type of sugar that is not absorbed by the body, but excreted in the urine. It is sometimes given IV to decrease swelling, for instance to decrease swelling in the brain. It works by increasing osmotic pressure of the blood, thus pulling water out of the swollen area. (The main effect in brain swelling is now thought to be to dilute the blood, by drawing water into the blood vessels, and allow it to flow through the brain more easily.)
Term
MAST
Definition
Military Anti-Shock Trousers. A pneumatic garment placed over the casualties legs and pelvis and inflated to provide splinting and improve venous blood return.
Term
MCPJ
Definition
Metacarpophalangeal Joint. The joint where a finger joints the hand. The knuckle.
Term
MD
Definition
Medical Doctor. A medical degree offered by "allopathic" medical schools; the majority of licensed physicians in the U.S. are MDs whereas the majority of the doctors in the UK and Ireland are MB or "Bachelor of Medicine".
Term
Mechanism of Injury (MOI)
Definition
The way in which an injury occurs; specifically, the physical forces and other external factors that contribute to a particular injury.
Term
Medical Practice Act
Definition
A state act that provides for the licensing of physicians, defines the practice, of medicine, and prohibits those who are unlicensed from practicing medicine. In Ireland, the Medical Practitioners Act, most recently updated in 2007, governs these parameters.
Term
Meningitis
Definition
Irritation or infection of the fluid and membranes surrounding the brain and spinal cord.
Term
Menorrhagia
Definition
Menstrual periods with more than normal blood loss.
Term
Menses
Definition
Blood and other material passing from the uterus during a woman's period.
Term
Metrorrhagia
Definition
Menstrual bleeding between periods.
Term
Midazolam
Definition
Trade name Hypnovel®. A short-acting muscle relaxing benzodiazepine, similar to diazepam (i.e., Valium®).
Term
Migraine Headaches
Definition
Headaches caused by spasm of cerebral blood vessels. Typically one sided and severe.
Term
Montezuma's Revenge
Definition
travellers' diarrhoea.
Term
Morbidity
Definition
Non-lethal complications from a disease or injury. Examples would include brain damage or amputation of a limb, or a long hospitalization.
Term
Mortality
Definition
Death.
Term
Mottled
Definition
unevenly coloured, blotchy.
Term
Myalgias
Definition
Muscle aches.
Term
Mycoplasma
Definition
A small single-celled parasite that is known to cause upper respiratory infections and pneumonia.
Term
Mydriatics
Definition
Drops that dilate the pupil.
Term
Myoglobin
Definition
An O2-carrying molecule found in muscles. It is similar to the haemoglobin molecule found in red blood cells. When released in large amounts after a crush injury, it is toxic to the kidney.
Term
Myoglobinuria
Definition
High levels of myoglobin in the urine. May cause renal failure.
Term
N.P.
Definition
Nurse Practitioner. Known in the UK and Ireland as a CNS (Clinical Nurse Specialist). An R.N. (Registered Nurse) who has gone on to more advanced training. NPs and PAs are similar in their training and capabilities.
Term
Near-syncopal
Definition
A near-syncopal episode is when one feels faint or light headed but doesn't actually pass out.
Term
Necrosis
Definition
Death of tissue.
Term
Neurogenic Shock
Definition
Shock caused by dilation of blood vessels. This may come from direct spinal injury (actually, to the paraspinal sympathetic nerve ganglia), or from a sudden outflow of nerve impulses after a psychological shock.
Term
Neuroleptic Malignant Syndrome
Definition
Hyperthermia, hypertension, and muscle spasms. A rare complication of long-term use of drugs such as Haldol®.
Term
Neuropathy
Definition
Damage to nerves.
Term
Newton's first law
Definition
An object in motion remains in motion until something stops it (even if that something is just friction).
Term
Newton's Third law
Definition
The way this "unusual" law works is this. Imagine pushing against a brick wall with 20 pounds of force. The 20 pounds of force that you place on the wall will be opposed by an equal and opposite force of 20 pounds by the wall. In other words, the force you exert on something gets transmitted back in the same amount.
Term
Norwalk Agent
Definition
A virus well-known for causing viral enteritis ("stomach flu").
Term
NS
Definition
Normal Saline. An intravenous solution of 0.9% sodium chloride (table salt). It is "normal" because it is similar in concentration to blood.
Term
NSAID
Definition
Non-Steroidal Anti-Inflammatory Drug, e.g., Ibuprofen (e.g., Brufen®) is an example.
Term
Nuclear Scan
Definition
A type of diagnostic study made by injecting very slightly radioactive particles into the blood, then using a special camera to make a picture of where the radioactivity deposits. Examples include a bone scan, looking for areas of infection or cancer, or a lung scan, looking for clots in the pulmonary arteries.
Term
O2
Definition
Oxygen.
Term
Oblique
Definition
Slanting, diagonal.
Term
Oedema
Definition
Accumulation of fluid in body tissues. Can be caused by congestive heart failure, renal or liver failure, or fluid overload. May be localised to one area, or generalised.
Term
Oesophageal Reflux
Definition
Gastroesophageal reflux. Stomach acid coming back up the oesophagus, causing irritation of the oesophagus and "heartburn" chest pain.
Term
Oesophagitis
Definition
Irritation of the oesophagus. The most common cause is gastroesophageal reflux.
Term
Olecranon
Definition
The expanded upper part of the ulnar bone. It is the bony tip of the elbow.
Term
Olfactory
Definition
relating to the sense of smell.
Term
Oncotic Pressure
Definition
Osmotic pressure from plasma proteins.
Term
Ophthalmologist
Definition
A medical and surgical eye doctor (an M.D. or D.O.). Not to be confused with an optometrist (0.0.), who checks refraction for glasses.
Term
Oral Rehydration Solution
Definition
Available in powder form, this is an oral electrolyte replacement solution that has saved thousands from dying from the severe diarrhoea of cholera.
Term
Orbital Rim
Definition
The bony parts surrounding the eye socket.
Term
Osmosis
Definition
The movement of a solvent from a concentrated solution to a less concentrated solution, by passage through a semi-permeable membrane. The result is that the concentration of the two solutions is equalised. In living organisms, the solvent is water and the semi-permeable membranes are cell walls.
Term
Osmotic Pressure
Definition
The Pressure tending to move fluids across a semi-permeable membrane such as blood vessel walls. The more concentrated a solution is (i.e. the more molecules of solute dissolved in it), the greater the osmotic pressure it will exert. Solutes include salt, sugar and larger molecules such as proteins. Osmotic pressure and the resulting osmosis tends to move water move from the less concentrated solution across the membrane to the more concentrated solution, thus diluting the more concentrated solution.
Term
Osteomyelitis
Definition
Infection of bone.
Term
Otitis externa
Definition
outer ear (ear canal) infection.
Term
Otitis Media
Definition
Middle ear infection.
Term
Otoscope
Definition
A special lighting device for looking into the ear
Term
PA
Definition
Physician's Assistant.
Term
PABA
Definition
Para-Amino Benzoic Acid
Term
Pancreatitis
Definition
Inflammation of the pancreas, a small organ in the epigastric region (just under the bottom of the breastbone at the top of the abdomen). Pancreatitis may come from alcohol abuse, trauma, certain medical problems, or a gallstone in the common duct that connects the liver, gallbladder, and pancreas to the gut.
Term
Papule
Definition
a raised spot on the skin less than 5 mm diameter.
Term
Parasites
Definition
An organisms that lives at the expense of another organism, usually inside or on the victim . As distinguished from symbionts and commensals - organisms that live together without harming one another
Term
Parasympathetic Nervous System
Definition
The parasympathetic nervous system, along with its companion sympathetic nervous system, make up the autonomic nervous system.
Term
Paresthesias
Definition
unusual sensations, usually due to damage to nerves or biochemical abnormalities; a feeling of "pins and needles" is a common paresthesia.
Term
Parvovirus
Definition
A type of virus known for causing stomach flu.
Term
Patella
Definition
kneecap.
Term
Pathogenic
Definition
Causing disease.
Term
Pathognomonic
Definition
Absolutely diagnostic.
Term
PE
Definition
Pulmonary Embolism. A blood clot in a blood vessel of the lung
Term
Pedal Oedema
Definition
swelling in the tissue around the feet and ankles. May be a sign of heart failure.
Term
Peer
Definition
1. a person of the same civil rank or standing; an equal before the law. 2. one who ranks with another in respect to endowments or other qualifications; an equal in any respect. When talking about trained peers in respect to CISD, we mean people who have similar enough backgrounds to be regarded as "one of us." Thus, a CISD-trained peer must be an emergency services worker. For SAR personnel, an ideal "CISD-trained peer" is a member of a SAR team with CISD training.
Term
Pelvic Inflammatory Disease
Definition
(PID) An infection of the female genital tract which may cause infertility
Term
Perforated Ulcer
Definition
An ulcer in the duodenum or stomach that has eroded through the wall of the intestine or stomach.
Term
Perfusion
Definition
The delivery of blood to a tissue. A poorly perfused tissue receives little blood.
Term
Periapical Abscess
Definition
An abscess at the base (root) of a tooth.
Term
Pericarditis
Definition
Inflammation of the sac around the heart, often due to a viral illness.
Term
Perineal
Definition
Referring to the area behind the genitalia but in front of the anus.
Term
Periorbital
Definition
Around the eyes.
Term
Periosteum
Definition
The membranous covering of a bone.
Term
Peristalsis
Definition
The rhythmic contractions of the gastrointestinal tract that propel digesting food and faecal matter along their course from one end to the other.
Term
Peritonitis
Definition
Infection of the peritoneum (the inside lining of the abdomen). Symptoms and signs may include severe abdominal pain, high fever, and a rigid abdomen. The most common cause in a young otherwise healthy person is appendicitis.
Term
Peritonsillar Abscess
Definition
An abscess inside a tonsil on one side of the throat. A peritonsillar abscess may need surgical drainage. Also known as Quincy.
Term
PERLA
Definition
Pupils Equal and Reactive to Light and Accomodation.
Term
Pharyngitis
Definition
Sore Throat.
Term
Phlegm
Definition
Mucus from a respiratory infection.
Term
Photodermatitis
Definition
A rash, similar to sunburn, caused by exposure to the sun's ultraviolet "A" light after taking certain medications. For example, doxycycline.
Term
Physician's Assistant
Definition
Someone who has completed a specified course of training, usually 2 years of intense training at a medical school, and who can carry out some but not all functions of a physician. Must work under supervision of a physician.
Term
PIP
Definition
Proximal Interphalangeal (joint). The finger or toe joint second from the end; between the DIP and MCP joints.
Term
Pitting Oedema
Definition
If you can press your finger into the skin and it leaves a dent, we call this "pitting oedema." Your finger momentarily presses out the oedema fluid from the skin.
Term
Placebo
Definition
an inactive substance resembling a medication, or an inactive treatment resembling a real treatment, which may be used as a control in experiments. The effect, real or psychological of administering an inert 'medication'. The effect may be very powerful.
Term
Plantar Flexion
Definition
at the ankle; flexing the ankle so that the foot moves downward, toward the plantar aspect (bottom) of the foot.
Term
Plasma
Definition
The fluid component of blood, excluding white and red blood cells and platelets.
Term
Platelets
Definition
The component of whole blood responsible for the initial plugging of leaks, which they do by sticking to the damaged edges of the blood vessels and each other. Platelets are implicated in strokes and myocardial infarctions.
Term
Pleurisy
Definition
A viral inflammation of the lining of the chest.
Term
Pleuritic Chest Pain
Definition
Pain that is worse with a deep breath.
Term
Pneumonia
Definition
An infection of the tissue of the lung.
Term
PO
Definition
By mouth (per os).
Term
Poikilotherm
Definition
"cold-blooded." See homeotherm.
Term
Postauricular
Definition
Behind the ears.
Term
Post-traumatic Stress Disorder (PTSD)
Definition
a psychiatric disorder which is caused by an exposure to a severe stress. This disorder usually needs special treatment by a mental health professional.
Term
PR
Definition
RectaIly (per rectum).
Term
Pressors
Definition
Also known as vasopressors. Pressors are drugs that increase blood pressure. Dopamine, dobutamine, epinephrine, and norepinephrine
Term
Prognosis
Definition
The outlook for progression or resolution of a disease; how a person with the disease may reasonably expect to do.
Term
Prokaryotes
Definition
Single celled or simple organisms e.g. bacteria
Term
Pronation
Definition
Twisting the forearm so the palm is down.
Term
Prophylactic
Definition
"Tending to ward off disease." E.g., Aspirin is given to patients who are at risk of a myocardial infarction as a prophylactic measure.
Term
Prostate Gland
Definition
A walnut-sized gland that surrounds the male urethra. Cancer of the prostate is the most common male cancer.
Term
Protein
Definition
The basic building block of living things. Made up of intricately folded chains of small molecules called amino acids. Though there are only about 20 amino acids, there are millions of different proteins owing to different combinations of amino acids. Muscles are made of proteins, many hormones are proteins, and enzymes are proteins.
Term
Protozoa
Definition
Single-celled organisms.
Term
Psychotic
Definition
A person who is psychotic has only loose connections with reality . He or she may see or hear things that aren't there, and not see or hear things that you can see and hear .
Term
Pulmonary Oedema
Definition
Fluid in the lungs that has oozed out of small capillaries. This may be caused by increased pressure in the capillaries from congestive heart failure, or from damage to the capillary walls, as in ARDS.
Term
Pulse Oximeters
Definition
Electronic devices that are attached to a finger, toe, or ear lobe. By monitoring the colour absorption of the blood perfusing the skin with each pulse, these monitors can give a real-time read­out of the percentage oxygen saturation of the blood.
Term
Pulse Pressure
Definition
The difference between systolic and diastolic pressures. For instance, if the BP is 120/80, the pulse pressure is 40. A narrowed pulse pressure, felt as a weak and thready pulse, is one of the early signs of shock.
Term
Punctate
Definition
Point like. When used to describe keratitis (erosion of the cornea of the eye), it refers to many small pinpoint erosions.
Term
Pyorrhea
Definition
Pus draining from the gums.
Term
Quinolone
Definition
The quinolone family of antibiotics includes moxifloxacin (Avelox®), ciprofloxacin (Ciproxin®), and ofloxacin (Taravid®). These antibiotics kill a variety of bacteria, and are unrelated to penicillins or sulfa drugs. They are not considered safe for women who might be pregnant, or for children or adolescents.
Term
Radial
Definition
toward the radius (toward the thumb). Opposite of ulnar.
Term
Rales
Definition
Soft crackles in the lungs. May be simulated by rubbing some of your hair between two fingers (next to your ear). Generally signifies pulmonary oedema.
Term
Raynaud's Syndrome
Definition
A disease characterized by spasm of the finger and toe arteries in the cold, causing cold, blue digits.
Term
Recurrent
Definition
occurring over and over.
Term
Regression
Definition
retreat to infantile or childish defence mechanisms.
Term
Relative hypovolaemia
Definition
a normal total volume of blood in a vascular system that is expanded beyond normal; seen in heat stress, neurogenic shock from spinal injuries, or from psychogenic shock (fainting).
Term
Renal Failure
Definition
Kidney failure.
Term
Retina
Definition
The thin layer of the back of the eye that contains light and colour detecting cells.
Term
Retroperitoneal
Definition
Behind the peritoneum. The kidneys, pancreas, and parts of the intestine are retroperitoneal, rather than free in the peritoneal cavity of the abdomen.
Term
Retrospective
Definition
When referring to a medical or scientific study, "retrospective" means a study that, after the fact, analyzes medical records. This is in distinction to a "prospective" study, which lays out, in advance, the way the study will be carried out. Prospective studies are generally more reliable than retrospective.
Term
Reye's Syndrome
Definition
A particular type of liver failure in combination with encephalitis (inflammation of brain tissue) that is associated with a variety of viral infections. Aspirin as also been implicated.
Term
Rh Type
Definition
One of the most important blood types. A person's blood is RH positive or negative. People with RH negative blood will have an allergic reaction against RH positive blood if it is transfused. This is particularly important in the setting of childbirth where the mother and the fetus may be of different Rh blood types.
Term
Rhabdomyolysis
Definition
breakdown of skeletal muscle. This leads to release of myoglobin into the blood. Myoglobin is excreted in the urine (myoglobinuria) which may lead to kidney failure.
Term
Rheumatoid Arthritis
Definition
A common type of autoimmune arthritis.
Term
Rhinitis Medicamentosa
Definition
Rhinitis caused by overuse of nasal decongestants.
Term
Rhinitis
Definition
A stuffy, runny nose. Rhinitis may be a result of allergy or of a minor viral infection (a "cold").
Term
Rhus
Definition
See Toxicodendron.
Term
Rickettsiae
Definition
A group of small intracellular parasites including the organisms that cause Typhus and Rocky Mountain Spotted Fever.
Term
Rocky Mountain Spotted Fever
Definition
An infectious disease transmitted by the bite of certain ticks.
Term
ROM
Definition
Range Of Motion (of a joint).
Term
Rotavirus
Definition
A virus well-known for causing diarrhoea ("stomach flu"), especially in children.
Term
Sacral (or Presacral) Oedema
Definition
Swelling in the skin of the lower back. Generally from congestive heart failure, re­nal failure, liver failure, or fluid overload. Seen instead of pedal oedema in those restricted to bed rest.
Term
Salivation
Definition
Mouth-watering; drooling.
Term
Salmonella
Definition
A family of bacteria known to cause dysentery in humans.
Term
SAR
Definition
Search And Rescue.
Term
SC
Definition
Subcuraneous (UK)
Term
Scaphoid
Definition
one of the eight wrist (carpal) bones. Also sometimes known as the carpal navicular bone - the tarsal navicular bone is found in the foot. Both words, navicular and scaphoid, refer to the bone's boat-like shape. The scaphoid bone can be palpated in the anatomic snuffbox at the base of the thumb.
Term
Scapula
Definition
shoulder blade.
Term
Scintillating Scotoma
Definition
Flashing lights that obscure part of the visual field. Associated with the beginning of a migraine headache.
Term
Sclera
Definition
The white part of the eye.
Term
Scrotum
Definition
The sac holding the testicles.
Term
Sedation
Definition
Sleepiness.
Term
Sedentary
Definition
not moving around. May be a diplomatic way of describing the lifestyle of someone who is a 'couch potato'.
Term
Septic Shock
Definition
A type of shock caused by massive infection. Sepsis is characterized as "warm" shock, because there is a high cardiac output and dilated peripheral blood vessels.
Term
Shigella
Definition
Shigella is the name of a family of bacteria known to cause dysentery in humans.
Term
Shunting
Definition
A shift in blood supply from one area to another.
Term
Sickle Cell Disease
Definition
Found in some with African ancestry; caused by an abnormal haemoglobin molecule in red blood cells. When subjected to low O2 levels, the abnormal haemoglobin crystallises, causing red blood cells to twist into "sickle" shapes. The cells then aggregate and cause clots in many small blood vessels. Lack of O2 then causes more sickle cells to deform, making the problem worse. Sickle cell genes protect against malaria, which is why it still exists despite the disadvantage to some who carry it.
Term
SL
Definition
Under the tongue (sublingual).
Term
Snow blindness
Definition
See solar keratitis.
Term
Solar Keratitis
Definition
Snow blindness. A sunburn of the cornea.
Term
SQ
Definition
AKA SubQ. Subcutaneous. (USA)
Term
Stasis
Definition
Slowing down or stopping.
Term
Stokes-Adams attack
Definition
acute syncope from a cardiac arrhythmia.
Term
Stridor
Definition
Upper airway "wheezing" indicating partial obstruction, as occurs in croup or epiglottitis. A cough that is barking or seal-like is called a stridorous cough.
Term
Stuporous
Definition
Having a decreased level of consciousness, but not being unconscious.
Term
Subarachnoid Haemorrhage
Definition
Bleeding into the cerebrospinal fluid, often from a ruptured aneurysm.
Term
Subconjunctival Haemorrhage
Definition
Bleeding under the outer covering of the eye (conjunctiva) over the sclera (white part of the eye).
Term
Sugar Tongs Splint
Definition
A splint, usually made from plaster, fibreglass, or a flexible splint such as a Sam Splint™. It is shaped like a long "U," and covers both sides of a limb. For the forearm and wrist, it starts at the palm, goes proximal up the forearm, around the back of the elbow, then back down the forearm to the back of the hand. For the ankle, it goes from one side of the leg, down under the foot, then up the other side of the leg.
Term
Sulfacetamide
Definition
A sulfa antibiotic often used in eye drops and eye ointments. Not commonly used in the UK and Ireland.
Term
Suppination
Definition
In relation to the forearm, twisting the forearm so the palm is up.
Term
Suppleness
Definition
When checking the neck, ability to move the neck in all directions without pain.
Term
Sympathetic Nervous System
Definition
The fight or flight mechanism. The sympathetic nervous system, along with its companion parasympathetic nervous system, make up the autonomic nervous sys­tem.
Term
Sympathomimetics
Definition
Drugs that mimic the fight-or flight sympathetic nervous system response. Also known as adrenergics, because of the similarity to the effects of adrenaline.
Term
Syncopal
Definition
relating to syncope (fainting), e.g. "the patient had a syncopal episode" (i.e., passed out).
Term
Syncope
Definition
fainting, passing out, becoming unconscious.
Term
Systemic
Definition
Having effects throughout the body.
Term
Talofibular ligaments
Definition
The anterior and posterior talofibular ligaments are found below the lateral malleolus at the ankle. They connect the lateral malleolus (the distal fibula) with the talus (the large tarsal bone just above the heel). The anterior talofibular ligament is the most commonly sprained ligament in ankle sprains.
Term
Temperature balance
Definition
also known as temperature homeostasis. Refers to keeping the body core temperature at a constant temperature near 99°F (37°C), and the mechanisms and control systems that achieve this.
Term
Temporal Arteritis
Definition
Inflammation of the temporal artery.
Term
Tendon
Definition
a dense, fibrous band that joins a muscle to a bone. Similar in appearance to ligaments that join bone to bone.
Term
Tetanus Toxoid
Definition
A "tetanus shot." Contains a modified form of the tetanus poison. This "toxoid" will make the body develop antibodies that will protect against the real tetanus toxin (poison). Needs to be administered in adults every 10 years to maintain immunity.
Term
Theobromine
Definition
a chemical found in cocoa and chocolate that has stimulant actions similar to caffeine.
Term
Thrombophlebitis
Definition
A clot in a small superficial vein with resulting inflammation.
Term
Thrush
Definition
A yeast infection of the mouth, common in children. Thrush is characterized by irritation and redness of the mucous membranes and white "stuck-on" appearing patches. The same term is used to refer to a common fungal infection of the vagina or foreskin.
Term
TIA
Definition
transient ischemic attack. An acute neurological deficit, similar to a stroke, but that completely resolves within 24 hrs.
Term
Tinea
Definition
A superficial skin infection with a variety of fungi, including jock itch, ringworm, and athlete's foot.
Term
Tinnitus
Definition
ringing in the ears. Seen as a toxic effect from high aspirin levels, or from ear infection or head trauma.
Term
Titrate
Definition
To administer a medication in increments until a desired effect occurs, e.g., giving morphine until the patient has pain relief.
Term
Tort Claim
Definition
A type of civil suit that alleges intentional harm.
Term
Toxicodendron
Definition
The formal name for a group of plants including poison ivy, poison oak, and poison sumac.
Term
Toxin
Definition
Poison.
Term
Transcutaneous
Definition
Through the skin.
Term
Transverse
Definition
across the long axis of a limb.
Term
Travellers'' Diarrhoea
Definition
Non-dysentery diarrhoea that occurs about 2-5 days after travelling to a different country. One cause is a particular bacterium called" enterotoxigenic" E. coli. travellers'' diarrhoea is also known as "turista" or "Montezuma's Revenge."
Term
Turista
Definition
travellers'' diarrhoea.
Term
Tympanic Membrane
Definition
Eardrum.
Term
Tympanic Perforation
Definition
A ruptured eardrum.
Term
Ulnar
Definition
toward the ulna (toward the little finger). As opposed to radial (toward the thumb).
Term
Umbilicus
Definition
Belly button.
Term
Unilateral
Definition
On one side only.
Term
Urine Output
Definition
Normal urine output is 1-2 ml/kg/hr for children, or about 30-50 ml/hr for an average adult.
Term
Urticaria
Definition
An allergic wheal-like rash (like mosquito bites without the bite), which may occur over the entire body. AKA a hive.
Term
Urushiol
Definition
The oil in poison ivy and similar plants to which so many people are allergic.
Term
UTI
Definition
Urinary Tract Infection
Term
Uvula
Definition
The uvula is the floppy piece of tissue that hangs down in the back of the throat. The "Punching Bag"
Term
Varices
Definition
Dilated veins.
Term
Vascular Headache
Definition
A migraine or cluster headache; caused by spasm of cerebral blood vessels.
Term
Vasodilator
Definition
any medicine that causes vasodilatation. Nifedipine is a vasodilator sometimes used in the prehospital setting.
Term
Vasospasm
Definition
Spasm (constriction) of the blood vessels, as occurs in small arteries to reduce blood flow to the area they supply.
Term
Vector
Definition
An insect or other carrier of disease to another species.
Term
Vesicle
Definition
A tiny blister.
Term
Vibrio parahemolyticus
Definition
a species of bacteria known to cause dysentery in humans.
Term
Virulence
Definition
The more virulent a type of bacteria is, the fewer are the bacteria needed to create a self­sustaining infection.
Term
Viruses
Definition
Small semi-alive "germs" that can cause disease. Viruses cannot reproduce by themselves, but are parasites that require a cell of some other organism to reproduce. Viruses generally consist of DNA or RNA surrounded by a protein coat, but little else. They are much smaller than even the smallest bacterial cells.
Term
Volar Plate
Definition
A tough ligamentous plate on the volar (palm) side of each finger joint.
Term
Volar
Definition
the same side of the arm as the palm.
Term
Volume Depletion
Definition
Same as hypovolaemia. Low blood volume.
Term
WEMT
Definition
Wilderness Emergency Medical Technician.
Term
Whiplash
Definition
The mechanism of injury causing many neck injuries, when the head is "whipped" forward and / or back on the neck from sudden acceleration or deceleration forces, as in a car accident or at the end of a climber's fall.
Term
WHO
Definition
World Health Organization.
Term
Wilderness Command Physician (WCP)
Definition
A physician (MD. or MB) who is permitted to provide medical command to advanced-level EMTs, and who has specialised training in the direction of Wilderness EMTs.
Term
Wilderness EMS
Definition
A system capable of providing medical care and rescue beyond the means of routine or conventional EMS systems. This may require transport of equipment, personnel, and medications on team member's backs over rugged terrain to the patient, and during evacuation from the site to an entry point into the "normal" EMS system.
Term
Wilderness EMT
Definition
A specially trained member of a well-organized, wilderness-oriented, physician controlled system that provides medical care to patients in backcountry or wilderness situations.
Term
Wilderness
Definition
A tract or region uncultivated and uninhabited by human beings; an uninhabited region left in its natural condition; something likened to a wild region in its bewildering vastness, perilousness, or unchecked profusion.
Term
Yersinia
Definition
Yersinia is the name of a family of bacteria known to cause dysentery in humans.
Supporting users have an ad free experience!