DVM Doctor of Veterinary Medicine MCQ 2 — Questions and Answers
Question 1: A cat presents with polyuria, polydipsia, and a pendulous abdomen. Bloodwork shows hyperglycemia and elevated liver enzymes. Which condition is most likely?
- Diabetes mellitus
- Hyperadrenocorticism (Correct answer)
- Hyperthyroidism
- Chronic kidney disease
Correct answer: Hyperadrenocorticism
Hyperadrenocorticism (Cushing's disease) in cats causes PU/PD, pot-bellied appearance, and elevated liver enzymes due to excess cortisol.
Question 2: Which antibiotic class inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins?
- Fluoroquinolones
- Tetracyclines
- Beta-lactams (Correct answer)
- Macrolides
Correct answer: Beta-lactams
Beta-lactam antibiotics (penicillins, cephalosporins) inhibit cell wall synthesis by irreversibly binding penicillin-binding proteins (PBPs).
Question 3: A dog develops acute respiratory distress after receiving a blood transfusion. What is the most likely diagnosis?
- Transfusion-associated circulatory overload
- Acute hemolytic transfusion reaction
- Transfusion-related acute lung injury (Correct answer)
- Febrile non-hemolytic transfusion reaction
Correct answer: Transfusion-related acute lung injury
Transfusion-related acute lung injury (TRALI) presents as acute respiratory distress within 6 hours of transfusion due to donor antibodies activating recipient neutrophils.
Question 4: In ruminants, which forestomach compartment is responsible for mechanical breakdown of coarse feed through muscular contractions?
- Rumen (Correct answer)
- Reticulum
- Omasum
- Abomasum
Correct answer: Rumen
The rumen is the largest forestomach compartment and performs mechanical breakdown of coarse feed through muscular contractions and fermentation.
Question 5: Which equine lameness condition is associated with degenerative joint disease of the distal interphalangeal joint and navicular bone?
- Laminitis
- Navicular syndrome (Correct answer)
- Ringbone
- Sidebone
Correct answer: Navicular syndrome
Navicular syndrome (podotrochlear disease) involves degenerative changes affecting the navicular bone, associated ligaments, and bursa within the hoof.
Question 6: A swine herd shows signs of sneezing, nasal discharge, and facial deformity in young pigs. Which pathogen is the primary cause of atrophic rhinitis?
- Bordetella bronchiseptica alone
- Pasteurella multocida toxigenic strains (Correct answer)
- Actinobacillus pleuropneumoniae
- Mycoplasma hyopneumoniae
Correct answer: Pasteurella multocida toxigenic strains
Toxigenic strains of Pasteurella multocida produce a dermonecrotic toxin causing turbinate atrophy and facial deformity in progressive atrophic rhinitis.
Question 7: Which mechanism does ivermectin use to kill parasites?
- Inhibiting acetylcholinesterase
- Blocking glutamate-gated chloride channels causing hyperpolarization (Correct answer)
- Disrupting microtubule polymerization
- Inhibiting fumarate reductase
Correct answer: Blocking glutamate-gated chloride channels causing hyperpolarization
Ivermectin potentiates glutamate-gated chloride channels in invertebrate nerve and muscle cells, causing irreversible hyperpolarization and paralysis.
DVM Doctor of Veterinary Medicine MCQ 2
A cat presents with polyuria, polydipsia, and a pendulous abdomen.
Bloodwork shows hyperglycemia and elevated liver enzymes.
Which condition is most likely?