DVM Anesthesia and Surgical Principles 3

Question 1

Which reversal agent is used to antagonize the sedative and cardiovascular effects of medetomidine in dogs?

Accepted Answer

Atipamezole

Answer

Atipamezole is a selective alpha-2 adrenergic antagonist used to reverse medetomidine and dexmedetomidine sedation and bradycardia.

Question 2

During equine anesthesia, post-anesthetic myopathy most commonly affects muscles that are:

Accepted Answer

Compressed and hypoperfused in the dependent position

Answer

Post-anesthetic myopathy results from ischemia in dependent muscles subjected to prolonged compression and hypoperfusion during recumbency.

Question 3

Which of the following is the correct surgical approach for ovariohysterectomy in a cat performed by the 'hook' technique?

Accepted Answer

Ventral midline through the linea alba

Answer

The standard feline OHE uses a ventral midline incision through the linea alba, allowing access to both ovaries and the uterine body.

Question 4

Neostigmine is used to reverse neuromuscular blockade. Its mechanism involves:

Accepted Answer

Inhibition of acetylcholinesterase, increasing synaptic acetylcholine

Answer

Neostigmine inhibits acetylcholinesterase, allowing acetylcholine to accumulate and competitively overcome non-depolarizing neuromuscular blocking agents.

Question 5

A 10-kg dog undergoing anesthesia has an ETCO2 of 55 mmHg. The appropriate intervention is:

Accepted Answer

Increase respiratory rate or tidal volume

Answer

Elevated ETCO2 (hypercapnia) indicates hypoventilation; increasing minute ventilation by raising rate or tidal volume will lower CO2 elimination.

DVM - Doctor of Veterinary Medicine Practice Test

DVM - Doctor of Veterinary Medicine Practice Test

DVM Anesthesia and Surgical Principles 3