DVM Anesthesia and Surgical Principles 2

Question 1

Which inhalant anesthetic has the highest blood:gas partition coefficient, resulting in the slowest induction and recovery?

Accepted Answer

Halothane

Answer

Halothane has the highest blood:gas partition coefficient (~2.4) among common inhalants, meaning more drug must dissolve in blood before equilibrium is reached, slowing induction and recovery.

Question 2

A dog is in Trendelenburg position during abdominal surgery. Which physiologic consequence is most likely?

Accepted Answer

Increased intracranial pressure

Answer

Trendelenburg (head-down) position shifts abdominal contents cranially and increases intracranial pressure by impeding venous drainage from the head.

Question 3

Which opioid is most appropriate for epidural analgesia in dogs due to its hydrophilicity and prolonged duration of action?

Accepted Answer

Morphine

Answer

Morphine's high hydrophilicity limits its spread within the epidural space, producing prolonged segmental analgesia lasting 12–24 hours.

Question 4

During anesthesia, a cat develops a heart rate of 240 bpm with narrow QRS complexes and no visible P waves. The most likely diagnosis is:

Accepted Answer

Supraventricular tachycardia

Answer

Supraventricular tachycardia presents with narrow QRS complexes (indicating normal ventricular conduction) and absent or hidden P waves at rapid rates.

Question 5

Which local anesthetic has the longest duration of action and is most cardiotoxic in overdose?

Accepted Answer

Bupivacaine

Answer

Bupivacaine provides the longest duration of local anesthesia but binds cardiac sodium channels with high affinity, making cardiac resuscitation after toxicity extremely difficult.

DVM - Doctor of Veterinary Medicine Practice Test

DVM - Doctor of Veterinary Medicine Practice Test

DVM Anesthesia and Surgical Principles 2