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Sx Nursing Final
questions for Sx Nursing final exam
100
Veterinary Medicine
Undergraduate 2
12/11/2010

Additional Veterinary Medicine Flashcards

 


 

Cards

Term
Name the ideal pre-med, induction and maintenance drugs for a c-section in a dog
Definition

Atropine (anticholinergic)

Midazolam (benzodiazepine tranquilizer)

Butorphanol (opioid/analgesic)

Propofol (induction)

Isoflurane (gas inhalent)

 

Term
Give 2 reasons why atropine is the anticholinergic of choice for c-sections.
Definition

1. Has a short onset and duration

2. Can cross the placental barrier

Term
Why give metaclopramide or cimetidine (famotidine) to a c-section patient?
Definition
Give acid blockers to inhibit reflux due to increased intra- abdominal pressure from the fetuses
Term
Why do we pre-oxygenate c-section patients and what is the duration?
Definition

Duration 5 minutes pre-induction. 

We give to prevent hypoxia and poor tissue perfusion due to pressure on the diaphragm

Term
Name a disadvantage to mask inhalant induction vs. injectable induction for c-section?
Definition
Mask induction does not provide airway protection and her increased risk of reflux means increase risk of vomit aspiration.
Term
List 2 strategies for reviving an unresponsive puppy delivered via c-section.
Definition

1. rub vigorously with a towel

2. place 1 drop of doxapram under the tongue to initiate a breath and increase respiration

Term
Name the reversal agent for opiods, alpha 2 agonists and benzodiazepines
Definition

opioids-naloxone

benzodiazepines-flumazenil

alpha 2s- yohimbine for most

Term
Name 4 parameters that affect the CO2 laser's effect on tissue
Definition

1.power setting

2. spot size/tissue area

3. tip to tissue distance

4. hand speed

Term
List 4 surgeries where lasers may be beneficial
Definition

1. spay

2. neuter

3. cat declaw

4. mass removal

Term
List 2 distinct advantages to laser surgery 
Definition

1. cauterizes the vessels and causes hemostasis

2. should be less painful/traumatic to tissues if done properly, esp. w/ declaws

Term
What are 2 disadvantages of using a laser in surgery
Definition

1. cost-very expensive

2.steep learning curve, can do more damage than good if not done properly.

Term
List 4 safety precautions for when lasers are in use
Definition

1. protect the skin, don't scrub w/ alcohol, use saline instead

2. protect your eyes, wear safety glasses

3. protect yourself from fumes. use a plume scavenger and face mask

4. prevent fire hazzard- wet down flammable objects (i.e. ET tube)and beware laser near O2 tanks

Term
Name some key differences between lidocaine and bupivicaine
Definition

Lidocaine- 15 min. onset

4-6 hour duration

Bupivicaine- less than 5 min. onset

1-2 hour duration

 

Term
What should you be aware of if you choose to mix lidocaine and bupivicaine for maximum benefit
Definition
Cut the dose by 50%
Term
Name 4 important differences between the lidocaine patch and fentanyl patch
Definition

Mode of Action- lidocaine topical absorption, fentanyl systemic transdermal absorption

 

Application- lidocaine must be applied near site of pain for local analgesia, fentanyl can be applied anywhere, because drugs are released systemically


cost- lidocaine is cheaper

 

Fentanyl is a controlled drug, lidocaine is not

Term
Why can you cut a lidocaine patch to size, but not a fentanyl patch? How do we reduce the dose of fentanyl for a small patient
Definition
If a fentanyl patch is cut, drugs will be delivered uncontrollably throughout the system, while lidocaine only provides local analgesia. To reduce the dose of fentanyl, only remove part of the protective backing. You can use the rest later. 
Term
Describe opioids as analgesics. List some and their receptors.
Definition

Opioids are good, potent somatic and visceral analgesics, w/ mild sedation

i.e.

morphine- pure mu agonist

oxymorphone-pure mu agonist

hydromorphone- pure mu agonist

fentanyl- pure mu agonist

buprenorphine-partial mu agonist

butorphanol-mu antagonist, kappa agonist

Term
Which opioid has the longest onset and duration?
Definition
The fentanyl patch- 6-12 hour onset, w/ 72 hour duration
Term
Which opioid has the shortest onset and duration?
Definition
butorphanol- onset 15 mins IM/SQ, duration 1-2 hours. Also least potent opioid analgesic
Term
Which opioids are bad to combine?
Definition
butorphanol w/ mu agonists. Will cancel each other out.
Term
What is the only oral, synthetic opioid we have in veterinary medicine?
Definition
Tramadol- 1-2 hour onset, lasts 8-12 hours given PO
Term
What is the most profound side effect of giving opioids, besides analgesia?
Definition
Respiratory depression
Term
List some alpha 2 agonists that provide analgesia
Definition

xylazine (horses usually)

dexmedetomidine

medetomidine

detomidine (horses only)

ramifidine (horses only)

Term
Which drugs can be used as emetics in dogs and cats?
Definition

xylazine- cats

apomorphine-dogs

Term
Name some NSAIDs commonly used for analgesia
Definition

carprofen- injectable or oral

meloxicam- injectable or oral

etodolac-oral

deracoxib-oral

tepoxalin-oral

firocoxib (Previcox)-oral

Term
Which NSAID as of 2010 is no longer approved in cats for post-op analgesia? What is our only post-op alternative as a result?
Definition

Oral meloxicam, though some vets may continue to use it off label

buprenorphine is the only approved alternative.

Term
What is our biggest concern when it comes to giving NSAIDs...especially perisurgically?
Definition
renal perfusion
Term
What can we do to help increase renal profusion during surgery where NSAIDs are part of the protocol?
Definition
Increase fluid rate
Term
Which drugs commonly used for surgery, are NOT analgesics?
Definition

anticholinergics (atropine and glyco)

Phenothiazines (acepromazine)

benzodiazepines (diazepam, midazolam, zolazepam, etc.)

propofol

gas inhalents

Term
Which class of drugs is commonly used in combination with analgesics and sedatives? What are their common side effects?
Definition
NMDA antagonists, i.e. ketamine and tiletamine. Hallucinations, and muscle rigidity.
Term
Define neurolept analgesia
Definition
The combination of an opioid and a sedative to reach maximum potentiation of each drug to relax and reduce pain in the patient.
Term
What is our main goal w/ analgesic protocols?
Definition
To prevent pain, not to chase it.
Term
What drugs are commonly used for ring blocks? What nerves do we numb for a routine declaw?
Definition

lidocaine, bupivicaine, or mepivicaine (horses)

 

block the radial, ulnar and and median metacarpal nerves

Term
What are the cellular components of a stress leukogram? What is the hallmark of chronic stress vs. acute stress?
Definition

See overall leukocytosis

neutrophilia

lymphopenia

eosinopenia

monocytosis

 

Will see significant increase in cortisol levels in chronic stress. 

Term
What will we see chemically in a stressed animal's bloodwork?
Definition

Increased glucose levels

increased platelets

increased RBCs

Increased cortisol

Term
What is a marginal pool and how do peripheral blood changes occur during times of stress?
Definition
The marginal pool is where blood cells made in the bonemarrow are stored until needed. In times of stress, HR and BP increase, flooding the marginal pool into the peripheral blood, thus leading t neutrophilia
Term
What is the formula for blood pressure?
Definition

BP=HR X SV X TPR

CO=HR X SV, so...

BP=CO X TPR

Term
What is the ideal stage and plane of anesthesia for a routine spay or neuter?
Definition
Stage III, Plane II
Term
Name some of the MOST reliable signs of depth of anesthesia
Definition

1. gross, purposeful, spontaneous movement

2. reflex movement,less reflex present, deeper they are

3. transient hemodynamic- increase or decrease in HR or Respiration (minus surgical stimulation)

 

Term
Name some reliable signs of anesthetic depth
Definition

1. Vaporizer setting history

2. muscle tone

3. palpebral reflex

4. pupillary response

5. tear production, very dry=very deep

6. eyeball position

Term
Name some of the LESS reliable signs of anesthetic depth
Definition

1. HR alone

2. Resp. rate alone

3. BP

Term
Name some UNRELIABLE signs of anesthetic depth
Definition

1. pupil size

2. shivering in response to hypothermia

Term
Opioids cause what in cats?
Definition
mydriasis
Term
What's important to remember when determining anesthetic depth?
Definition
A positive response provides much more info than a negative one. Also, never make a determination of depth on one parameter alone
Term
List 3 signs that a patient may display when in pain?
Definition

1. may vocalize

2. may not eat

3. may favor the affected area or hide

Term
Define multimodal analgesia
Definition
An approach to pain management that involves using analgesics from different categories...i.e. an opioid and an NSAID
Term
What is the term for a pain response to a normally innocuous stimulus?
Definition
allodynia
Term
What is defined as an increased pain response as a result of local inflammation?
Definition
hyperalgesia
Term
What is the term for the absence of pain sensation in the skin and musculoskeletal system?
Definition
somatic analgesia
Term
What is the term for absence of pain or stimulation to the internal organs?
Definition
visceral analgesia
Term
Which lasts longer, the sedative or analgesia effects of butorphanol?
Definition
sedative effects
Term
Which intervertebral space do we administer an epidural?
Definition
Lumbosacral joint-between L7 and S1
Term
Which complex is associated with ventricular depolarization on an EKG?
Definition
QRS complex
Term
What is associated with atrial depolarization on an EKG?
Definition
P wave
Term
What is associated with ventricular re-polarization on the EKG?
Definition
T wave
Term
What is associated with the time  required for an impulse to travel from the SA node to the ventricle on an EKG?
Definition
PR Interval
Term
What class of drugs is most likely to cause profound bradycardia or an AV block?
Definition
opioids
Term
Which class of drugs would you most likely use to TREAT an AV block or sinus bradycardia
Definition
anticholinergics
Term
Which drug is most likely used to treat VPCs?
Definition
lidocaine
Term
When do we consider a large breed dog to be bradycardic?
Definition
<60 BPM
Term
When do you consider a cat to be bradycardic?
Definition
<120 BPM
Term
Describe a 2nd degree AV block: Mobitz type 1
Definition
An arrhythmia when the PR interval gradually gets longer and longer, until it skips a QRS complex/T wave and resets itself
Term
What is going on if you see a wide QRS complex appearing early on the rhythm strip?
Definition
VPCs- ventricular premature contractions
Term
How do you calculate a HR based on a EKG rythm strip?
Definition

1.Determine paper speed

2. count 5 large blocks to equal 1 second

3. count the number of complete complexes in 10 (5 block) spaces

4. Multiply that number by 6

 

i.e. paper speed is 25 mm/sec. you count 6 complexes in 10 seconds. Multipy that by 6 and get 36 BPM.

 

Term
What is the term for the amount of blood ejected during one cardiac cycle?
Definition
stroke volume
Term
What happens to blood pressure if the HR drops?
Definition
BP decreases
Term
What happens to BP if the TPR drops?
Definition
BP decreases
Term
Acepromazine causes profound vasodilation. Which part of the BP formula is most affected by this?
Definition
TPR
Term

True or Fals

Normal pulses= Normotension

Definition
False
Term
What are 2 indications for monitoring BP in veterinary patients?
Definition

1. monitoring geriatrics

2. monitoring patients on cardiac meds

Term
What are the 2 most common technologies for measuring INDIRECT BP in animals?
Definition

1. oscillometry

2.doppler

Term
List the most common locations to place a BP cuff on dogs and cats
Definition
proximal to the carpus and proximal to the tarsus
Term
What is the most common lead used in EKG?
Definition
LEAD 2
Term
What rarely if ever causes perianesthetic arrhythmias?
Definition
True heart disease
Term
What are some common issues we see w/doppler BP measurements?
Definition

Tendency to underestimate systolic, usually a better reflection of MAP

Poor representation of diastolic BP

<100 readings consider MAP

>100 readings consider systolic

Term
What are the 3 steps seen on an EKG preceding death of the patient?
Definition

1. ventricular tachycardia- a bunch of VPCs in succesion

2. Ventricular Fibrillation- low amplitude chaotic electrical activity

3. asystole-flat line- no electrical or mechanical activity-DEATH

Term
What are 2 places to palpate a PERIPHERAL pulse
Definition

metacarpal palmar artery

metatarsal dorsal artery

Term
When do we become concerned about inspiratory CO2 being registered on a capnograph?
Definition
When it reaches or exceeds 5 mmHG
Term
What are 2 common causes for excessive inspiratory CO2?
Definition

1. CO2 absorber, whether a leak or expired soda lime

2. A communication between the inhalation and exhalation tubes in an F circuit causing the patient to rebreathe excess CO2

Term
What is the Normal awake value for ETCO2 in both dogs and cats?
Definition

dog-35-45 mmHG

cat- 30-40 mmhg

Term
List 4 causes of increased ETCO2
Definition

1. hypoventilation

2. fresh gas flow too low

3. malignant hyperthermia

4. problem w/breathing circuit

Term
List 4 causes of decreased ETCO2
Definition

1. Hyperventilation

2.hypothermia

3. apnea

4. asthma

Term
List the normal canine values for the following:
Definition

MAP: >70 mmHG

ETCO2: 35-45 mmHG

InCO2: 0-8 mmHG

PaCO2: 38-38 mmHG

SpO2: >95%

PaO2: >110 mmHG

 

Term
What might you do to correct a high ETCO2 and PaCO2 if you see the patient is hypoventilating?
Definition
Institute IMVs.
Term
What are 2 indications for anticholinergics?
Definition
reduce salivary secretions and increase HR
Term
What are 2 possible complications associated w/ acepromazine?
Definition
could lower the seizure threshold, could cause possible bradycardia
Term
What are some possible immediate side effects of propofol induction?
Definition
going slowly through the excitement phase and apnea
Term
List some things that decrease pulmonary performance under anesthesia.
Definition

drugs like opioids and inhalants

recumbancy

head down position

lung pathology

Term
What is the term for a collapsed state of the lung/alveoli?
Definition
atelectasis
Term
What are 2 indications for complete controlled ventilation of a patient?
Definition

1. elective for a patient that is very difficult to keep at a steady rate

2. open chest surgeries

Term
At what pressure do we provide a regular breath to patients?
Definition
15-20 cmH2O
Term
What pressure do we provide a sigh or deep breath?
Definition
Depends on patient size, but never more than 30 cmH2O
Term
Why do we sigh our patients?
Definition
To prevent atelectasis
Term
How often do we sigh, spontaneous ventilated patients vs. controlled ventilated patients?
Definition

spontaneous=every 5 mins

controlled=every 15 mins

Term
What is the unit we have to monitor vitals at BRCC?
Definition
The Cardell all in one
Term
List some artifacts that can occur when taking an EKG
Definition

60 cycle interference- electrical 

wandering baseline-result of panting or purring

patient movement, etc.

Term
What is the difference between a Mobitz Type 1 and Mobitz Type 2 arrhythmia?
Definition

Mobitz type 1 will gradually extend time between complexes, until a beat is skipped entirely andthen it resets

Mobitz Type 2 has a consistant rhythm, then randomly drops a beat and resets-more dangerous and more related to pathology

Term
Why might we see low ETCO2 on a non-rebreathing system
Definition
Because the patient is only taking in fresh gasflow. It is not unusual to see an ETCO2 in the 20s.
Term
Which is more helpful and accurate to monitor the patient, ETCO2 or SpO2?
Definition
ETCO2, SpO2 is rarely accurate
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