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Pharmacology · USMLE Step 1 · Healthcare and Nursing

USMLE Pharmacology: Renal and Diuretic Drugs

Loop, thiazide, potassium-sparing, and osmotic diuretics with mechanism of action and one signature side effect per card.

About this set

37 mixed cards for USMLE Step 1 Pharmacology. Set 15 of 19 in USMLE Pharmacology. It opens with "What is the mechanism of action of loop diuretics?" and "In which part of the nephron do loop diuretics act?". Study it alongside the other USMLE Step 1 sets below.

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What is the mechanism of action of loop diuretics?
Show answerThey inhibit the Na-K-2Cl cotransporter.
In which part of the nephron do loop diuretics act?
Show answerThe thick ascending limb of the loop of Henle
What is the signature side effect of loop diuretics involving hearing?
Show answerOtotoxicity
Name three loop diuretic drugs.
Show answerFurosemide, bumetanide, and torsemide
Which loop diuretic lacks a sulfa moiety and can be used in patients with sulfa allergy?
Show answerEthacrynic acid
How do loop diuretics affect urinary calcium excretion?
Show answerThey increase calcium excretion, risking hypocalcemia
What potassium disturbance do loop diuretics cause?
Show answerHypokalemia
Why can loop diuretics precipitate gout attacks?
Show answerThey cause hyperuricemia by competing with uric acid for tubular secretion
What is a major clinical use of loop diuretics in acute heart failure?
Show answerTreating pulmonary edema
Loop diuretics are used to treat which acute electrolyte emergency of excess serum calcium?
Show answerHypercalcemia
Furosemide
Show answerLoop diuretic
What is the mechanism of action of thiazide diuretics?
Show answerThey inhibit the Na-Cl symporter
In which part of the nephron do thiazide diuretics act?
Show answerThe distal convoluted tubule
How do thiazide diuretics affect urinary calcium excretion?
Show answerThey decrease calcium excretion, causing hypercalcemia
What is the first-line diuretic class for treating essential hypertension in many patients?
Show answerThiazide diuretics

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