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1

How many liters of oxygen can fit in an E cylinder?

660 L

2

5 causes of hypoxemia... go!

  1. ​Decreased FiO2
  2. Hypoventilation 
  3. V/Q mismatch
  4. Right to left shunt
  5. DIffusion Impairment

3

How many liters of oxygen can fit in an H cylinder?

6600 L

4

What is the tank cylinder pressure in E and H oxygen tanks?

2200 psi

5

Anesthetized patients encounter respiratory depression from anesthetic drugs, so we supplement their oxygen to avoid hypoxemia. What is considered the minimum FIO2?

Minimum FIO2 = 35%

6

According to the ACVA, how often should you record findings while an animal is under anesthesia?

Every 5-10 minutes

7

The pressure reduction valve reduces cylinder pressure to a fixed _____ psi

50 psi

Provides a constant pressure of 50 psi to the flowmeter

8

What is the main function of the 'pop-off' valve?

limits pressure buildup within the circuit

ALWAYS keep open unless delivering manual, controlled, or assisted ventilation

9

Gas passing through the oxygen flowmeter is reduced from 50 psi to about ____ psi

15 psi

10

What is the SVP for Isoflurane at 20oC?

240 mmHg

11

The check valve prevents transfilling of one tank to another. If this valve breaks, what would happen to the temperature as a result of rapid transfilling?

Temperature would increase

**risk of FIRE**

12

Would these hoses be used for re-breathing or non-rebreathing systems?

rebreathing

13

Ocular reflexes are a good indicator of anesthetic depth. The bovine eye rotates __________ during light planes of anesthesia

ventromedially

14

What are the three most common causes of hypotension under anesthesia?

vasodilation, decreased contractility, and bradycardia

15

When vasopressors are administered to a patient, what happens to the patient's heart rate?

reflex bradycardia

16

What is the effect of Atropine on heart rate and blood pressure?

↑ HR & ↑ BP

Following IV injection of atropine, an initial increase in vagal tone may occur and a transient decreased heart rate or heart block can occur. This is followed by the expected increase in heart rate

17

T/F: With Xylazine, you may observe an initial vasoconstriction and rise in arterial blood pressure followed by a reflex bradycardia

True

18

What duration of analgesia do you expect when using butorphanol?

30 mins - 2 hours

Butorphanol is a mixed opioid agonist-antagonist (agonist at kappa receptor and antagonist at mu receptor). It is used for mild to moderate visceral pain, not effective for severe or orthopedic pain.

19

In what stage of anesthesia are vomiting and swallowing reflexes lost?

Stage III

20

T/F: Doppler is used for reliable detection of diastolic pressure

False

Doppler is used for reliable detection of systolic pressure

21

What is the approximate duration of action of propofol?

<20 minutes

Rapid-acting, ultra-short duration (<20 mins)

22

What respiratory effects might you expect after administering propofol?

dose-dependent depression & apnea

Always be prepared to assist ventilation

23

What is the equation you use to calculate proper size of rebreathing bag?

Body weight x Tidal volume x 5

  • Normal tidal volume = 10-20 mls/kg

24

What flow rate is typically used with a non-rebreathing system?

200-300 ml/kg/min

Throughout the entire procedure

25

T/F: Calcium gluconate 23% and 0.9% NaCl both lower potassium concentration and are used for treatment of hyperkalemia

False!

Both are used for treatment of hyperkalemia, but Calcium gluconate 23% does NOT lower [K+]. It protects the myocardium against the cardiotoxic effects of hyperkalemia and prevents arrhythmias

0.9% NaCl dilutes the high serum [K+]

26

What is the normal PaO2 range for arterial blood on 100% O2?

~500 mmHg

27

What is the most common pathologic arrhythmia in horses?

Atrial Fibrillation

28

What is the approximate blood volume (in mL) for a 10 kg dog?

~900 mL

90 mL/kg x 10 kg

29

What is the approximate blood volume (in mL/kg) for ovines?

60 mL/kg

30

What is the normal pH range for arterial blood?

7.35 - 7.45