In cirrhosis with ascites, what is the initial diuretic regimen and the key monitoring parameter?

• A. Spironolactone as first-line; add furosemide if needed; monitor weight, potassium, creatinine
• B. Furosemide alone; monitor blood pressure
• C. Hydrochlorothiazide as first-line
• D. Mannitol diuresis

Answer: (A)

In cirrhosis with ascites, the main issue is excess sodium and water retention driven by reduced effective circulating volume and secondary hyperaldosteronism. Targeting aldosterone first with spironolactone makes sense because it blocks aldosterone’s effect in the distal nephron, promoting natriuresis and helping mobilize fluid while preserving potassium. If diuresis with spironolactone alone isn’t adequate, adding furosemide (a loop diuretic) enhances sodium and water loss. This combination provides effective diuresis while balancing electrolytes, since spironolactone is potassium-sparing and can mitigate potential potassium loss from a loop diuretic.

The key monitoring parameters reflect fluid status, electrolyte balance, and renal function. Daily weight is a practical gauge of how well the diuresis is removing fluid. Regular labs focusing on potassium and creatinine help detect hyperkalemia from spironolactone, hypokalemia from furosemide, and any decline in renal function that could signal dehydration or hepatorenal syndrome. Other regimens, like furosemide alone or thiazides or mannitol, are less appropriate because they don’t address the aldosterone-mediated sodium retention central to ascites, and they carry other risks in this setting.