COMLEX-USA Clinical Medicine - Internal Medicine

Question 1

A patient with chronic kidney disease has a serum potassium of 6.8 mEq/L and peaked T waves on EKG. First-line immediate treatment is:

Accepted Answer

IV calcium gluconate

Answer

Sodium bicarbonate IV

Answer

Furosemide IV

Answer

Kayexalate (sodium polystyrene sulfonate)

Question 2

Which finding on pulmonary function tests is characteristic of obstructive lung disease such as COPD?

Accepted Answer

Reduced FEV1/FVC ratio (<0.70)

Answer

Reduced FVC with normal FEV1/FVC ratio

Answer

Normal spirometry with reduced DLCO

Answer

Increased TLC with normal FEV1/FVC

Question 3

The most common cause of community-acquired pneumonia (CAP) in otherwise healthy adults is:

Accepted Answer

Streptococcus pneumoniae

Answer

Haemophilus influenzae

Answer

Mycoplasma pneumoniae

Answer

Legionella pneumophila

Question 4

A patient presents with symmetric proximal muscle weakness, elevated CK, and Gottron's papules. The diagnosis is:

Accepted Answer

Dermatomyositis

Answer

Polymyositis

Answer

Inclusion body myositis

Answer

Fibromyalgia

Question 5

In the diagnosis of systemic lupus erythematosus (SLE), which antibody is most specific (though not most sensitive)?

Accepted Answer

Anti-Sm

Answer

ANA

Answer

Anti-dsDNA

Answer

Anti-histone

Question 6

Which complication of cirrhosis involves bacterial translocation causing spontaneous infection of ascitic fluid?

Accepted Answer

Spontaneous bacterial peritonitis (SBP)

Answer

Hepatorenal syndrome

Answer

Hepatic encephalopathy

Answer

Hepatopulmonary syndrome