In the management of ascites, which diuretic should always be added?

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Multiple Choice

In the management of ascites, which diuretic should always be added?

In ascites from cirrhosis, the body’s perceived underfilling triggers increased aldosterone, leading to sodium and water retention that drives fluid accumulation. The best way to counter this is to block aldosterone’s effects in the kidney. Spironolactone, an aldosterone receptor antagonist, reduces sodium reabsorption in the distal nephron and promotes water excretion while sparing potassium. Because it directly targets the hormonal driver of fluid retention in this setting, it should be started and continued as the foundation of diuretic therapy for ascites, with others added as needed to enhance diuresis and manage electrolytes. The other diuretics are not as central: a loop diuretic can be useful but is typically added after starting spironolactone to augment diuresis, and it tends to cause potassium loss which spironolactone helps balance; a thiazide is less effective in severe edema; mannitol is used for different indications (like cerebral edema) and not for ascites.

In ascites from cirrhosis, the body’s perceived underfilling triggers increased aldosterone, leading to sodium and water retention that drives fluid accumulation. The best way to counter this is to block aldosterone’s effects in the kidney. Spironolactone, an aldosterone receptor antagonist, reduces sodium reabsorption in the distal nephron and promotes water excretion while sparing potassium. Because it directly targets the hormonal driver of fluid retention in this setting, it should be started and continued as the foundation of diuretic therapy for ascites, with others added as needed to enhance diuresis and manage electrolytes.

The other diuretics are not as central: a loop diuretic can be useful but is typically added after starting spironolactone to augment diuresis, and it tends to cause potassium loss which spironolactone helps balance; a thiazide is less effective in severe edema; mannitol is used for different indications (like cerebral edema) and not for ascites.

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