DVM Anesthesia and Surgical Principles 5

Question 1

Which technique is preferred to prevent regurgitation and aspiration in brachycephalic dogs during anesthetic induction?

Accepted Answer

Pre-oxygenation followed by rapid sequence induction and immediate intubation

Answer

Rapid sequence induction with pre-oxygenation minimizes the time the airway is unprotected, reducing aspiration risk in brachycephalic dogs prone to regurgitation.

Question 2

In small animal surgery, the correct classification of a surgical wound in which the GI tract was entered electively without contamination is:

Accepted Answer

Clean-contaminated

Answer

A clean-contaminated wound is one where a hollow viscus (GI, respiratory, urogenital) is entered under controlled conditions without significant spillage.

Question 3

A cat undergoing anesthesia has a SpO2 of 92% on room air pre-induction. This corresponds to an approximate PaO2 of:

Accepted Answer

65 mmHg

Answer

Based on the oxyhemoglobin dissociation curve, SpO2 of 92% corresponds to a PaO2 of approximately 65 mmHg, indicating mild hypoxemia.

Question 4

Which of the following is the mechanism by which succinylcholine causes neuromuscular blockade?

Accepted Answer

Persistent depolarization of the motor end plate, preventing repolarization

Answer

Succinylcholine mimics acetylcholine but resists hydrolysis, causing sustained end-plate depolarization that renders the muscle unresponsive to further stimulation.

Question 5

Wound closure by second intention (healing by granulation) is most appropriate for which of the following scenarios in a dog?

Accepted Answer

A heavily contaminated degloving injury of the distal limb

Answer

Heavily contaminated wounds with significant tissue loss are best managed by open wound care and second-intention healing to avoid sealing infection under a primary closure.

DVM - Doctor of Veterinary Medicine Practice Test

DVM - Doctor of Veterinary Medicine Practice Test

DVM Anesthesia and Surgical Principles 5