Anesthesia and Surgical Principles Flashcards
7 cards from real DVM practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Anesthesia and Surgical Principles flashcards as text
Which reversal agent is used to antagonize the sedative and cardiovascular effects of medetomidine in dogs?
Answer: Atipamezole
Atipamezole is a selective alpha-2 adrenergic antagonist used to reverse medetomidine and dexmedetomidine sedation and bradycardia.
During equine anesthesia, post-anesthetic myopathy most commonly affects muscles that are:
Answer: Compressed and hypoperfused in the dependent position
Post-anesthetic myopathy results from ischemia in dependent muscles subjected to prolonged compression and hypoperfusion during recumbency.
Which of the following is the correct surgical approach for ovariohysterectomy in a cat performed by the 'hook' technique?
Answer: Ventral midline through the linea alba
The standard feline OHE uses a ventral midline incision through the linea alba, allowing access to both ovaries and the uterine body.
Neostigmine is used to reverse neuromuscular blockade. Its mechanism involves:
Answer: Inhibition of acetylcholinesterase, increasing synaptic acetylcholine
Neostigmine inhibits acetylcholinesterase, allowing acetylcholine to accumulate and competitively overcome non-depolarizing neuromuscular blocking agents.
A 10-kg dog undergoing anesthesia has an ETCO2 of 55 mmHg. The appropriate intervention is:
Answer: Increase respiratory rate or tidal volume
Elevated ETCO2 (hypercapnia) indicates hypoventilation; increasing minute ventilation by raising rate or tidal volume will lower CO2 elimination.
Which suture pattern provides the greatest tensile strength for closure of a contaminated abdominal wound in a dog?
Answer: Simple interrupted
Simple interrupted sutures are preferred in contaminated wounds because failure of one suture does not compromise the entire closure.
Perioperative hypothermia in small animals is most effectively prevented by:
Answer: Administering warm IV fluids and using forced-air warming blankets
Active external warming with forced-air blankets combined with warm IV fluids addresses both conductive and convective heat loss, the primary causes of perioperative hypothermia.