DVM Large Animal Medicine 2

Question 1

A cow presents with right-sided ping on auscultation-percussion between ribs 9-12, decreased milk production, and anorexia. What is the most likely diagnosis?

Accepted Answer

Right displacement of the abomasum

Answer

Right displacement of the abomasum produces a characteristic 'ping' on auscultation-percussion over the right paralumbar fossa and is associated with decreased production and inappetence.

Question 2

Which of the following is the most common cause of shipping fever (bovine respiratory disease complex) in feedlot cattle?

Accepted Answer

Mannheimia haemolytica following viral stress

Answer

Bovine respiratory disease complex most commonly results from Mannheimia haemolytica opportunistically infecting cattle stressed by viral pathogens such as BRSV, BHV-1, or PI-3.

Question 3

A horse presents with acute onset of severe colic, complete absence of gut sounds, and gastric reflux of 8 liters. Rectal palpation reveals a tightly distended viscus in the right dorsal abdomen. What is the most likely diagnosis?

Accepted Answer

Small intestinal strangulating obstruction

Answer

Severe colic with gastric reflux, absent gut sounds, and a distended viscus on rectal palpation is classic for small intestinal strangulating obstruction, which rapidly progresses and requires emergency surgery.

Question 4

In bovine ketosis, which metabolic parameter is MOST consistently elevated in blood?

Accepted Answer

Beta-hydroxybutyrate

Answer

Beta-hydroxybutyrate (BHB) is the most reliable blood marker for ketosis, with levels >1.2 mmol/L indicating subclinical ketosis and >3.0 mmol/L indicating clinical ketosis.

Question 5

A ewe in late gestation is found recumbent, blind, and paddling. Blood glucose is 1.2 mmol/L. What is the most likely diagnosis?

Accepted Answer

Pregnancy toxemia

Answer

Pregnancy toxemia in ewes occurs in late gestation due to negative energy balance, resulting in hypoglycemia, ketosis, and neurologic signs.

DVM - Doctor of Veterinary Medicine Practice Test

DVM - Doctor of Veterinary Medicine Practice Test

DVM Large Animal Medicine 2