Ascites in Cirrhotic Portal Hypertension: Correct Statement Analysis
Statement (b) is correct: In diuretic-resistant (refractory) ascites, large-volume drainage paracentesis is the treatment of choice. 1, 2, 3
Analysis of Each Statement
Statement (a): SAAG <1.1 - INCORRECT
- The serum-ascites albumin gradient (SAAG) is ≥1.1 g/dL in portal hypertension-related ascites, not <1.1. 1
- A SAAG ≥1.1 g/dL indicates portal hypertension with approximately 97% accuracy 1
- This high gradient reflects the oncotic pressure difference between serum and ascitic fluid caused by portal hypertension 4
- A SAAG <1.1 g/dL would suggest non-portal hypertensive causes such as peritoneal carcinomatosis or tuberculosis 1
Statement (b): Paracentesis for Refractory Ascites - CORRECT
- Large-volume paracentesis (LVP) is the definitive treatment for refractory ascites that fails to respond to sodium restriction and high-dose diuretics. 1, 3
- Intravenous albumin must be administered at 8g per liter of ascites removed to prevent post-paracentesis circulatory dysfunction 1, 2
- LVP provides rapid relief and is associated with fewer complications than traditional diuretic escalation alone 3
- After paracentesis, diuretic therapy should be resumed to prevent rapid reaccumulation 1, 3
- Alternative options for refractory ascites include transjugular intrahepatic portosystemic shunt (TIPS) in selected patients, though this may worsen hepatic encephalopathy 3, 5
Statement (c): Systolic BP <100 mmHg - INCORRECT
- While cirrhotic patients with ascites often have systemic arterial vasodilation and relative hypotension, systolic blood pressure is not "usually" <100 mmHg 4, 6
- The hemodynamic profile includes splanchnic arterial vasodilation, increased cardiac output, and reduced systemic vascular resistance 6, 7, 3
- Blood pressure varies widely depending on disease stage and compensatory mechanisms 6, 7
- Hypotension becomes more pronounced in advanced stages with hepatorenal syndrome, but this is not the typical presentation of all ascites patients 8, 3
Statement (d): Sodium-Containing Fluids - INCORRECT
- This is dangerously wrong. Sodium restriction to 2000 mg/day (88 mmol/day) is the cornerstone of ascites management, not sodium administration. 1, 9, 10
- Administering sodium-containing fluids would worsen ascites by promoting further fluid retention 1, 7
- The pathophysiology involves inappropriate renal sodium retention due to activation of the renin-angiotensin-aldosterone system 4, 6, 7
- Fluid restriction is generally unnecessary unless serum sodium drops below 120-125 mmol/L 1
- Critical pitfall: NSAIDs and ACE inhibitors should be avoided as they worsen sodium retention and hypotension respectively 1, 10
Statement (e): Reduced Aldosterone - INCORRECT
- Serum aldosterone levels are markedly ELEVATED, not reduced, in cirrhotic ascites. 4, 6, 7
- The renin-angiotensin-aldosterone system (RAAS) is activated as a compensatory response to effective arterial hypovolemia from splanchnic vasodilation 6, 7, 8
- This hyperaldosteronism drives renal sodium retention and is the reason spironolactone (an aldosterone antagonist) is first-line diuretic therapy 1, 9
- Standard initial therapy is spironolactone 100 mg daily plus furosemide 40 mg daily 1, 10
Key Management Principles
First-Line Treatment Algorithm
- Sodium restriction to 2000 mg/day 1, 9, 10
- Combination diuretics: spironolactone 100 mg + furosemide 40 mg daily 1, 10
- Daily weight monitoring: target 0.5 kg/day loss (no edema) or 1 kg/day (with edema) 1
- Monitor electrolytes, creatinine, and assess urinary sodium excretion if inadequate response 1, 10