Shared Flashcard Set

Details

Anesthesiology
Anesthesiology
82
Veterinary Medicine
Undergraduate 2
08/16/2013

Additional Veterinary Medicine Flashcards

 


 

Cards

Term
What are the 3 types of Gas Supply a hospital can use?
Definition
-Compressed Gas (cylinders)
-Liquid Oxygen (tanks)
-Oxygen Generator (concentrator)
Term
Oxygen Cylinders
Definition
-Color coded Green for USA, White for Canada
-Pressure reduced/controlled via pressure reduction valve or pressure regulator
-Attach to machine via a "yoke" and pin index safety system
-E cylinder holds 650-700L
-Liters = psi x o.3
-1 liter/min flow rate = 11 hours
-2 turns opens fully
-Change when 100-200 psi remains
-Set oxygen line pressure to 50 psi (tank pressure gauge measures psi)
Term
Flow Meter
Definition
-Measures gas flow in mls or liters per minute going to the vaporizer
-Color coded green for oxygen
-Oxygen goes through a graduated glass cylinder with a floating ball/rotor (bobbin)
-Oxygen flows should meet or exceed metabolic requirement
Term
Oxygen Flush Valve
Definition
-Allows oxygen to by-pass the flow meters and vaporizer
-Delivers pure oxygen to breathing circuit
-Flow rate = 50l/min
Term
Fresh Gas
Definition
-Is oxygen and vaporized anesthetic
-The fresh gas line is attached to a breathing circuit at the fresh gas inlet.
Term
Types of Breathing Circuits
Definition
Rebreathing = circle system
Non-rebreathing = Bain circuit
Classes of Circuits:
-Open (no rebreathing of gases)
-Closed (allows rebreathing of gases)
-Semi-Open (variation of an open system)
-Semi-Closed (variation of a closed system)
Term
Unidirectional valves
(circle system)
Definition
-Inhalation & exhalation
-Also called flutter valves
-Keeps gas flow going in a circle
-Prevents animal from rebreathing
-Moisture may cause them to stick
Term
Reservoir Bag
(Circle System)
Definition
-Size = 30ml/lb (6 x tidal volume)
-Tidal Volume = 5-7 ml/lb
-Acts as a reservoir
-Useful to monitor breathing
-Allows "bagging" = you can give patient a breath
-Bag is normally full
-Size of bag depends on patients weight
Term
Breathing Circuits
(Circle system)
Definition
-Adult Size = >20lbs
-Pediatric Size = between 6-20 lbs
-Dead space begins at the "Y"
Term
Pressure Manometer
(Circle System)
Definition
-Also called pressure gauge
-Measures pressure within breathing system
-Used to help determine how big of a tidal volume to deliver to patient
-Measured in cm H2O
Term
Carbon Dioxide Absorber
(Circle System)
Definition
-Size = 2 x tidal volume
-Formulation: soda lime or bara lime
-Sodalime = 94% calcium hydroxide
-Change if granules are brittle (calcium carbonate)
-Color change due to pH indicator (time limited)
-Change absorbent after color changes 1/2
-Channeling can occur (when the CO2 doesn't absorb through entire canister, just the center)
-If working the canister will be warm
Term
Pop-off Valve
(circle system)
Definition
-Pressure relief valve
-Normally in the open position because of high oxygen flow rates
-Allows exit of waste gases to the scavenger
-Prevents build up of pressure within anesthesia system (barotrauma)
-Can be either open or closed in a closed system
-Should be open in a semi-closed system
-Should be either closed or partially closed if you are breathing for the patient
Term
Universal F Circuit
(Circle System)
Definition
-Aids warming and humidification of the inspired gases
-Increase in inspiratory resistance to breathing (usually used on patients >20lbs)
-Identical in Function to a conventional circle
Term
Closed vs. Semi-Closed Systems
Definition
-Oxygen flow rates determines if a system is classified as a closed or semi-closed system.
-If the term closed in included in the classification of an anesthesia system, it indicates that some or all of the exhaled gases are rebreathed
Term
Closed System
Definition
-Very low oxygen flow rate = metabolic requirements of the patient (2-3ml/lb/min)
-All exhaled gases are rebreathed
-All exhaled gases pass through soda-sorb
-Metabolic oxygen requirments are replaced on a minute by minute basis
-The pop-off valve may be left in a closed position
-May need to increase the % of inhalant delivered by turning up the vaporizer
Term
Advantages and Disadvantages to a Closed System
Definition
Advantages:
-More economical
-Less pollution
-Conserves heat and humidity
-Don't have to continually open and closed the pop-off valve to give the animal a breath
Disadvantages:
-Hypoxia
-Takes longer to change the anesthetic concentration in the circle
Term
Semi-Closed System
Definition
-Indicates that the oxygen flow rate is greater than the metabolic requirement
-Some of the exhaled gases are rebreathed and some exit the circle via the pop-off valve
-If the oxygen flow rate is close to the metabolic requirement it may be called "low-flow" anesthesia
Term
Advantages and Disadvantages to a semi-closed system
Definition
Advantages:
-Economy of anesthetic consumption
-Warming and humidification of the inspired gases
-Reduced atmospheric pollution
Disadvantages:
-Slow changes in the inspired anesthetic concentration with low flows or a closed system
-Can't be used on very small patients
Term
Testing the Circuit
Definition
-Close the pop-off valve
-Occlude the y-piece with your thumb
-Depress the oxygen flush valve until a pressure of 20 cm H2O is reached in the circuit
-Observe the manometer for a decrease in pressure which indicates a leak
Term
Bain Circuit
(Inspiration and Expiration)
Definition
Inspiration:
-The patient inspires fresh gas from the outer reservoir tube
Expiration:
-The patient expires into the reservoir tube. Although fresh gas is still flowing into the system at this time, it is wasted as it is contaminated by expired gas.
Expiratory Pause:
Fresh gas from the inner tube washes the expired gas out of the reservoir tube, filling it with fresh gas for the next inspiration.
Term
Bain Circuit
(parameters)
Definition
Use oxygen flow rate of 100ml/lb
-allows some rebreathing
-to eliminate all rebreathing would need a flow rate of 3x/min ventilation
-MV (minute ventilation) = RR (respiratory rate) x TV (tidal volume)
Used with patients <5-6 lbs
-decreased dead space
-decreased resistance to breathing
Term
Advantages and Disadvantages to a Bain Circuit
Definition
Advantages:
-Compact and inexpensive
-Low dead space
-Low resistance to breathing
-Facilitates scavenging of waste gases (vs mask only)
Disadvantages:
-Uses more oxygen and inhalation anesthetic per lb of patient
-Loss of humidity/heat = cold patient
-Can't use the oxygen flush valve = lung barotrauma
Term
Testing a Bain Circuit
Definition
-If the inner tube becomes disconnected or breaks, the entire breathing tube becomes dead space
-This may be detected in systems fitted with a bag by closing the pop-off valve and pushing the oxygen flush valve
-If the inner tube is intact, the venture effect of the rapidly moving stream of gas leaving the inner tube will suck gas out of the bag and the bag will empty.
-If the inner tube is damages, the stream of gas will be directed into the bag and it will fill.
Term
Peep Valve
Definition
-Addition to a circle system or Bain circuit
-Used to prevent pressure build-up in breathing circuit which leads to barotrauma
-Additional safety device
Term
Scavenger from the Pop-off valve
Definition
-Active = suction causes waste gas to enter scavenger (fan or vacuum line)
-Passive = positive pressure or waste gas pushes gas into scavenger
-Scavenged gases pass to either a hole in the wall that goes outside, a F/air canister with activated charcoal, or SurgiVet Pure-Guard with activated charcoal
Term
Why should we monitor anesthetized patients and what is the goal with that monitoring?
Definition
-Monitoring the anesthetized patient allows the veterinary anesthetist to identify problems early, institute treatment promptly, and thus avoid irreversible adverse outcomes.
-The overall goal of monitoring anesthetized animals is to ensure adequate tissue perfusion with oxygenated blood.
Term
How to monitor the anesthetized patient, and what are the ACVA monitoring recommendations?
Definition
-Subjective and Objective monitoring of anesthetized patients
-Subjective involves using visual, touch, and auditory senses to asses the patient's vital signs
-Objective involves the use of monitors to assess the patient's vital signs
-ACVA Monitoring Recommendations include: circulation, oxygenation, ventilation, personnel, and medical record.
Term
The Anesthetic Record
(what is it for?)
Definition
-Legal Document
-Monitor continuously
-Record every 5 minutes
-Alerts you to trends
Term
Define Electrical and Mechanical Activity?
Definition
ELECTRICAL ACTIVITY
-can have electrical activity without mechanical activity (pulseless electrical activity PEA)
-ECG
MECHANICAL ACTIVITY
-pulse pressure
-mean arterial blood pressure
-central venous pressure

*both measure circulation
Term
ECG Leads
(how can we use them?)
Definition
Electrocardiogram (ECG)
-measures electrical activity
-clips can cause trauma (prevent by loosening tension on springs, or file teeth)
-use fine gauge wire needles
-use stick-on patches
-skin staples to attach clips
-Esophageal stethoscope
-we use 3 leads, sometimes 4
Term
What is Pulse Pressure?
Definition
-Movement of blood through the arterial system
-Pulse pressure is not a reliable indicator of mean arterial pressure
-pulse pressure is the difference between systolic and diastolic pressure
-Calculated:
120/80 (120-80=40mmHg)
80/40 (80-40=40mmHg)
Term
Monitoring Pulse
Definition
Palpation:
-Femoral artery
-Carpal & Tarsal arteries
-Lingual artery
-Transverse facial on horses, or ear on cows and goats
Auditory:
-Esophageal Stethoscope
-Doppler (ultrasonic flow detector)
-Pulse Oximeter
Term
What is Arterial Blood Pressure and how do we calculate it?
Definition
-Mean Arterial Pressure (MAP) = Cardiac Output (CO) X Systemic Vascular Resistance (SVR)
-Cardiac Output = Heart Rate (HR) X Stroke Volume (SV)
-Stroke Volume = Load X Contractility
-MAP is what drives blood (perfusion), maintain >60mmHg during anesthesia
-MAP is the lateral force per unit area exerted on a vessel wall
-Calculated: Systolic P + Diastolic P + Diastolic P / 3 = MAP
120/80 (120 + 80 + 80/3 = 90mmHg)
80/40 (80 + 40 + 40/3 = 53.3mmHg)
Term
Indirect Mean Arterial Blood Pressure Methods
Definition
-Indirect = non-invasive
-Manual Method = Doppler Method (good to use in smaller patient)
-Automated = Oscillometric Method (Dinamap, detects pressure pulsations produced within a cuff bladder, Microprocessor controlled device inflates to suprasystolic pressure then deflates cuff, determines systolic, mean, and diastolic pressures)
Term
Cuff size and placement
Definition
Cuff Width = 40% of limb circumference
Cuff too narrow = artificially elevates values
Cuff too wide = artificially lowers values
Cat = above elbow if possible on medial side
Dog = distal forelimb or rearlimb
Equine = tail
Ruminant = tail or distal limb
Term
Direct Mean Arterial Blood Pressure Methods
Definition
-Direct = Invasive
-2 methods
-Connect arterial catheter to: mechanical movement is converted to electrical energy via a transducer and read with an occiliscope
-Or connect arterial catheter to: pulsations can be read with an aneroid manometer
Term
What is Central Venous Pressure (CVP)?
Definition
-Measure of the luminal pressure of the intra-thoracic vena cava or right atrium.
-Reflects ability of heart to pump blood returning to it
-Reflects adequacy of the circulating blood volume
-Connected to either a Water Manometer or Transducer
Term
Methods of Monitoring Ventilation
Definition
Observation
-thoracic wall movement
-breathing bag movement
Auditory
-"Honker"
-Esophageal stethoscope
Carbon Dioxide
-blood gas
-capnography
Term
Define Ventilation
Definition
-Rate, rhythm, nature, effort
-Rate: varies widely, look for sudden changes
-Increase rate: tachypnea, too light or too deep, drugs induced, obese & geriatric, hypoxia, hyperthermic
-Decrease Rate: bradypnea or apnea, CNS depression (too deep), opioids, barbiturates, propofol, after neuro procedures
-Respiratory Depression is one of the biggest reasons animals go into cardiac arrest
Term
Explain monitoring with a "honker", carbon dioxide, and capnography
Definition
Honker
-thermistor measures changes in air temp. uses esophageal stethoscope
Carbon Dioxide
-2 methods
-arterial blood gas analysis (invasive)
-End expired analysis = capnography (non-invasive)
Capnography
-an instrument that measures end-tidal CO2 (ETCO2) providing an estimate of arterial CO2 partial pressure (PaCO2)
Term
More about Capnography, things we can watch for with it?
Definition
-Normal arterial CO2 = 40-45 mmHg
-End expired (end-tidal) CO2 approximates arterial values
-Increased CO2 = hypoventilation, overproduction, rebreathing
-Decreased CO2 = hyperventilation, cardiac arrest
-Cardiogenic Oscillation: undulations in capnogram that are synchronous with cardiac contractions
Term
Clinical Uses and Types of Capnography
Definition
Clinical Uses:
-monitoring respiration and ventilation
(apnea alarm)
-Verify tracheal intubation
-monitoring for rebreathing of CO2 (could be from added dead space, faulty inspiration/expiration valves in circle, used up carbon dioxide absorber)
-Prediction of survival from cardiac arrest
Types: mainstream, side stream (which takes longer to analyze, can cog up, and disposable)
Term
Monitoring Oxygenations
Definition
Adequate oxygenation depends on:
-adequate blood oxygen, dissolve (partial pressure measured in mmHg), or bound to hemoglobin (saturation measured in %)
-adequate hemoglobin content
-adequate peripheral perfusion
Three methods of monitoring:
-mucous membrane color (non-invasive)
-arterial blood gas analysis (invasive)
-pulse oximetery (non-invasive)
Term
What is the Oxyhemoglobin Dissociation Curve?
Definition
A curve depicting the relationship between hemoglobin oxygen saturation and the partial pressure of oxygen in the blood
-Hypoxia = PO2 of 60mmHg
-90% sat = PO2 of 60mmHg
Term
Mucus Membrane Color
"Cyanosis"
Definition
-Occurs when unsaturated HgB exceeds 5g/100mls
-Blood turns from a red to a blue color
-Unreliable to monitor with anemia, bad lighting, skin pigment (chow)
If you have a PCV=30%, at what % sat. will the patient turn blue?
30/3=10gHgB/dl, Unsat.=5g (always 5 less), so 50% sat = cyanosis, and 50% unsat.
Term
Arterial Blood Gas analysis provides info about:
Definition
-Acid-base
-Oxygenation (hemoglobin sat. and oxygen partial pressure)
-Ventilation (CO2 partial pressure)
Term
What is the Pulse Oximeter?
Definition
An instrument that provides a continuous estimate of the percent of hemoglobin saturated with oxygen.
-provides pulse rate
-provides pulse rhythm - audible changes
-cardiac output
-the curve on the monitor is called the Pleth
-HgB and Oxygen HgB are absorbed at different wavelengths
Term
What Interference can happen with the pulse oximeter?
Definition
-Motion
-Low perfusion
-Optical interference: external light interference, anemia (HgB <5gm/dl), carbon monoxide, methemoglobin, intravascular dyes (methylene blue, 84%)
-Oximeter can't tell difference between oxyhemoglobin and carboxyhemoglobin, so any time the animal is exposed to CO2 you can't use this monitor
Term
Additional things to monitor for...
Definition
-Adequacy of anesthesia
-Temperature
-Blood Loss
Term
Ways for monitoring Depth of Anesthesia
Definition
-CNS activity (EEG)
-Muscle relaxation (jaw tone)
-Response to stimuli
-Sympathetic responses, HR, BP, RR
-Eye position/activity: eye rotated ventral-medial indicates surgical plane of anesthesia, dull palpebral reflex, horses showing nystagmus and tearing indicates light plane of anesthesia
Term
How to watch for Blood loss and changes in Temp.
Definition
Blood loss:
-(subjective) inaccurate, can't see it all. One 4x4 swab can contain 10mls of blood
-(objective) weigh swabs, measure volume in suction bottles etc...
Changes in temp:
-For core temp use the middle ear or esophageal stethoscope
-For periphery use rectal and nasal
Term
Hypothermia
Definition
-Increased cardiac irritability (bradycardia, spontaneous fibrillation)
-Hypoventilation
-Increased blood viscosity
-Decreased anesthetic requirements
-Decreased metabolism (delayed recovery)
-Shivering in recovery (increase oxygen requirements)
-Use a warming blanket or homemade one to prevent!
Term
Flow of gases and fluids
Definition
-Laminar Flow: smooth flow of gases
-Turbulent Flow: increased resistance
-Resistance depends on length and size of tube.
-Bigger + Shorter = better tube choice
Term
IV Access and Indications
Definition
-Admin of IV anesthetic agents and emergency drugs
-Fluid, blood, plasma admins
-Parenteral nutrition
-For repeated IV meds
-Monitoring: central venous pressure and MAP
-Secure way to deliver therapeutics
Term
Needles
Definition
-Smaller the number, the bigger the gauge. Often color coded
-Repeated use will cause vessel damage, hematomas, etc..
-Easily Dislodged
-Perivascular injection more likely
-Difficult to secure in place
Term
Catheters types and materials
Definition
Over-the-Needle: most common for IV anesthesia and short-term use.
-Catheter is fitted outside a stylet (needle)
-Only shorter lengths available
Wire-guided: commonly used for long-term catheterization, central venous, and arterial lines.
Materials:
-Teflon: stiff material only recommended for short-term use
-Polyurethane: best available material, can be left in for long periods, expensive
Term
Catheter sites
Definition
-Dog: cephalic, jugular, lateral saphenous
-Cat: cephalic, jugular, medial saphenous
-Equine and small ruminants: jugular, cephalic, later thoracic
-Cows: jugular or auricular
-Pigs, rabbits, some dogs: auricular
Term
Placement and Securing a Catheter
Definition
Placement:
-must not interfere with surgery
-choose a site that is accessible during surgery
-check patency of vein (inspect, palpate)
-place aseptically
-may require skin incision first (cows, llamas)
-Always place in direction of blood flow (towards heart)
Securing:
-Tape (small animal), Suture (large animal), glue, staples
- +/- cover with bandage, bandaid, antibiotic cream or iodine based ointment
Term
Maintenance of Catheter
Definition
-Flush with heparinized saline every 4-6 hours
-Inspect every 24 hours
Term
Endotracheal intubations
Definition
Placement of a tube in the trachea to provide a patient airway. Methods include:
-Orotracheal
-Nasotracheal
-via Pharangotomy
-Tracheostomy
Term
Endotracheal Tubes
Definition
-Measured by their internal diameter in millimeters
-a size 10 = 10mm internal diameter
-the larger the internal diameter, the lower the resistance to breathing
-Cuff should be in the middle third of trachea
-if too long: may intubate a main-stem bronchus, increases dead space
-if too short: easily dislodged
-anatomy of a cuff tube: connector, inflating tube, cuff, bevel, Murphy's eye (prevents blockage of endotracheal tube)
*use your stethoscope to make sure you are in the right spot*
Term
Special Endotracheal tubes
Definition
-Non-cuffed
-Cole tube
(used in birds and very small patients because reduced resistance due to larger diameter will fit without cuff)
Stylets
-May help in small ruminants, swine, rabbits
-Danger of trauma (make tube stiff)
Materials
-Rubber: cannot inspect
-Silicone: soft, flexible
-Metal: needed for laser surgery
Term
Complications
Definition
Laryngospasm
-Can occur at intubation or extubation, seen in cats and pigs, common to apply local anesthetic before hand
Esophageal
-gastric distention, risk of aspiration, no delivery of oxygen or gas to lungs (hypoxia, patient wakes up), can't get cuff to seal, patient can vocalize
Occluded Tube
-mucus, saliva, blood, foreign material, herniated cuff, tip lodged against tracheal wall (need murphy eye), flexion of neck kinks tube for radiography, surgery (use wire reinforced tube, can occur from patient position)
Tracheal Damage
-Excessive wall pressure (over-inflated cuff), damage from disinfectant used to clean tubes, use uncuffed tubes in birds
Bitten and Inhaled Tubes
-left in too long, bitten off in recovery, can inhale tube if not secured
Bronchial Intubation
-Make sure to measure against the patients to the middle of the cervical spine
Term
Orotracheal Intubation
Definition
Direct Vision: dogs, cats, small ruminants, pigs, birds
Blind: horses, rabbits
Blind with palpation: large ruminants
Term
Procedure for Intubation
(Steps 1-5)
Definition
1: Gather necessary equipment (endotracheal tubes, lidocaine, tie gauze, laryngoscope)
2: Confirm length and diameter of tube, check for cleanliness
3: Lubricate the tube (water or very thin coat of K-Y)
4:Protect tube from getting contaminated
5:Induce anesthesia
Term
Procedure for Intubation
(Steps 6-11)
Definition
6: Position patient for intubation (sternal, lateral, dorsal)
7: Place endotracheal tube over the epiglottis and advance ventral toward the opening of the larynx
8: Advance tube, gently twisting 360 degrees if necessary
9: A stylet may have to be used with silastic tubes
10: When correctly placed, secure tube by tying gauze to the muzzle or behind the head
11: Inflate cuff (if needed) so a leak begins to occur at 15-20 cmH2O pressure; this will offer some protection to the lungs from barotrauma
Term
Conformation of tracheal intubation
Definition
-Look with laryngoscope
-Palpate for 2 tubes
-Auscultate thorax when giving a breath
-Expired CO2 measurements (capnography)
Sometimes you can:
-look for condensation during exhalation
-Patient may cough
-Watch reservoir bag
-Regurgitates soon after intubation
-Wakes up after several minutes on inhalant
Term
Patient Evaluation
Definition
-Not all patients are the same, anesthetic technique depends on the patient
-Patient History
-PE
-Signalment (species and breed)
Term
Patient History
Definition
-Age
-Repro Status
-Previous illness
-Any recent illness
-Exercise tolerance
-Recent treatment with other drugs
-Vaccination Status
-Previous Surgeries
-Obtain signed release for surgery
-Allergies?
Term
Physical Exam
Definition
-Cardiovascular
-Respiratory
-Hepatic and renal disease
-Hydration status
-Weight
-Temp.
-Disposition
-Other problems requiring treatment
-Confirm surgery
Term
Boxers
Definition
-Some are sensitive to acepromazine
-Bradycardia that is not responsive to atropine
-Avoid in older boxers
-Use with caution in young boxers
Term
Brachiocephalic Breeds
Definition
-Small larynx
-Hypoplastic trachea
-Elongated soft palate
-Redundant pharyngeal tissue
-Small external naries
Term
Sight Hounds
Definition
-Thin Skin
-Unusual characteristics of the inductions agent thiopental
(initial rapid redistribution, altered hepatic metabolism, overdose, long recoveries)
Term
Small Breeds
Definition
-Hypothermia (use warming pads)
-Hypoglycemia (admin. glucose or closely monitor blood glucose)
-Small veins (small IV catheters)
-Careful management (see-through surgical drape)
-Fluid admin. (use burette or fluid pump)
-Length of endotracheal tube (cut if needed)
-Surgeons can't rest on patient
Term
Obese Patients
Definition
-Ventilation problems (pant during surgery, difficult to keep asleep, pickwickian syndrome)
-Difficult to locate veins
Term
Age Consideration
Definition
-Very young and very old are more susceptible to the effects of anesthesia
-Neonate = up to 2 weeks
-Pediatric = 2-4 weeks
-Geriatric = 75% of life span
Term
Laboratory Data
Definition
-CBC: PCV shouldn't be < 20%
-TP: shouldn't be < 3.5 g/dL; albumin < 1mg/dL
-Glucose shouldn't be < 80mg/dL
-Blood chemistries: if no history of problems may be optional
-Heart Disease: ECG or cardiac ultrasound
-Renal Disease: urinalysis; BUN
-Hepatic Disease: liver enzymes (chemistry)
Term
Physical Status
Definition
Excellent (class 1): normal, healthy
Good (class 2): mild disease (no clinical signs)
Fair (class 3): moderate systemic illness (mild clinical signs)
Poor (class 4): severe systemic illness
Critical (class 5): not expected to live without surgery
Term
Reasons and Recommendations for Fasting
Definition
Reasons:
-Empty the stomach
-prevent vomiting/regurgitation
-prevent aspiration of stomach contents
-decrease weight of GI tract in large animals
-help prevent bloat in ruminants
Recommendations:
-Dogs and cats fasted 8-12hrs (neonates and small animals may need supplementation to prevent hypoglycemia)
-Pocket pets and birds usually not fasted
-Horses fasted 12hrs
-Ruminants fasting time varies with size
-Emergency surgeries are not fasted (administering a premed that causes vomiting will not insure that the stomach is empty)
Term
Fluid Administration
Definition
-5ml/lb/hr (10ml/kg/hr) is the normal intraoperative fluid admin. rate
(may be increases with renal disease, decreased with cardiac disease or increased intracranial pressure)
-40ml/lb/hr is the shock therapy fluid admin. rate
Term
Fluid Considerations
Definition
Balanced Electrolytes:
-Lactated ringers solution or Normasol is used for routine anesthesia
-Saline solutions are sometimes used for patients with liver disease
Dextrose solutions are used in animals that are hypoglycemic
Blood is used to treat anemia and sudden hemorrhage
Plasma is used treat hypoproteinemia
Synthetic colloids (hetastarch) are used to maintain intravascular volume
Blood substitutes (oxyglobin) used to treat anemia, shock, hemorrhage
Term
Other Considerations preoperative...
Definition
-Walk them outside
-Proper ID of patient
-Confirm location of surgery
-Restrain animal in physiologic position
-Try to keep patient warm and on a comfortable surface
Supporting users have an ad free experience!