NAVLE Feline Internal Medicine 5

Question 1

A cat with pleural effusion undergoes thoracocentesis. Analysis reveals chylous effusion (triglycerides > serum). What is the most common underlying cause in cats?

Accepted Answer

Idiopathic chylothorax

Answer

Idiopathic chylothorax is the most common cause in cats when lymphoma and cardiac disease have been excluded, though thoracic duct abnormalities are suspected.

Question 2

A 4-year-old indoor cat develops acute epistaxis and retinal hemorrhages. Blood pressure is 225/160 mmHg. Which primary disease is most commonly responsible for severe hypertension in cats under 7 years of age?

Accepted Answer

Primary hyperaldosteronism

Answer

Primary hyperaldosteronism is an important cause of severe hypertension in younger cats and should be investigated when CKD and hyperthyroidism are absent.

Question 3

Feline lower urinary tract disease (FLUTD) in a young male cat is most commonly attributable to which condition?

Accepted Answer

Idiopathic feline interstitial cystitis (FIC)

Answer

Idiopathic feline interstitial cystitis (FIC) accounts for approximately 55–65% of FLUTD cases in young cats, and bacterial UTI is rare in cats under 10 years.

Question 4

A cat with suspected exocrine pancreatic insufficiency (EPI) should have which test performed to confirm the diagnosis?

Accepted Answer

Feline trypsin-like immunoreactivity (fTLI)

Answer

Feline TLI (fTLI) below 8 µg/L confirms EPI in cats by measuring pancreatic exocrine secretion capacity; EPI is rare in cats but fTLI is the diagnostic gold standard.

Question 5

Which antiviral drug has been shown to induce remission of FIP caused by FCoV mutation (FIPV) in clinical trials and is now widely used off-label?

Accepted Answer

GS-441524 (nucleoside analog)

Answer

GS-441524, an adenosine nucleoside analog, inhibits FCoV replication and has shown >85% sustained remission rates in cats with wet and dry FIP in clinical studies.

NAVLE - North American Veterinary Licensing Examination Practice Test

NAVLE - North American Veterinary Licensing Examination Practice Test

NAVLE Feline Internal Medicine 5