VTNE Anesthesia Management 3

Question 1

What is the recommended endotracheal tube cuff inflation pressure to prevent tracheal damage in small animals?

Accepted Answer

Less than 20 cmH2O

Answer

Cuff pressure should be maintained below 20–25 cmH2O to prevent ischemic necrosis of the tracheal mucosa from excessive pressure.

Question 2

Which inhalant anesthetic has the highest blood:gas partition coefficient among those commonly used?

Accepted Answer

Halothane

Answer

Halothane has the highest blood:gas partition coefficient (~2.4) among common inhalants, resulting in slower induction and recovery compared to newer agents.

Question 3

A dog's capnograph waveform shows an elevated baseline (above zero during inspiration). What does this indicate?

Accepted Answer

CO2 rebreathing

Answer

An elevated capnograph baseline indicates the patient is inhaling CO2, consistent with rebreathing due to exhausted CO2 absorbent or an incompetent expiratory valve.

Question 4

Which drug class is CONTRAINDICATED in patients with pheochromocytoma undergoing anesthesia?

Accepted Answer

Acepromazine

Answer

Acepromazine blocks alpha-adrenergic receptors, which can unmask beta-adrenergic effects of catecholamines from a pheochromocytoma, causing severe hypotension and tachycardia.

Question 5

During equine anesthesia in dorsal recumbency, the horse develops hypoxemia despite 100% oxygen delivery. What is the most likely cause?

Accepted Answer

Ventilation-perfusion mismatch

Answer

Dorsal recumbency in horses causes significant V/Q mismatch because the weight of abdominal organs compresses the dependent lung, impairing gas exchange.

VTNE - Veterinary Technician National Examination Practice Test

VTNE - Veterinary Technician National Examination Practice Test

VTNE Anesthesia Management 3