Repeated USMLE Questions Step 1- Review- 76- Pathology

Q- Which of the following is the most frequent form of pericarditis associated with myocardial infarction?

A- Fibrinous pericarditis

B- Hemorrhagic pericarditis

C- Serous pericarditis

D- Suppurative pericarditis

A- Fibrinous pericarditis- It presents with chest pain and it usually occurs days to weeks following myocardial infarction. A loud pericardial friction rub is diagnostic. Hemorrhagic type is related to TB or malignancy. Serous type can be idiopathic or as immunological reaction. Suppurative type is caused by infection.

Q- Which of the following conditions is characterized by hypertension due to sodium retention, hypokalemia and decreased renin secretion?

A- Conn syndrome

B- Cushing syndrome

C- Diabetes insipidus

D- Renal ischemia

A- Conn syndrome- It is a primary aldosteronism leads to increased sodium and water retention resulting in hypertension. Hypertension is causing decreased renin secretion due to its negative feedback. Renal ischemia is causing increased renin secretion, not decreased.

Q- Which one of the following skin pathological conditions is caused by autoantibodies that react with desmosomes or hemidesmosomes leading to disrupting intracellular junctions?

A- Acne vulgaris

B- Bullous pemphigoid

C- Dermatitis herpetiformis

D- Urticaria

B- Bullous pemphigoid- It is considered type II hypersensitivity along with pemphigus vulgaris.

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