Chronic Liver Disease and Cirrhosis — Written Clinical Reasoning

SAQ 1 — Integrated Management of Decompensated Cirrhosis (20 marks, 30 minutes)

Prompt: Outline your integrated management plan for this patient, including immediate resuscitation, management of each decompensating complication with specific drugs and doses, and the role of liver transplant assessment. Justify each decision with reference to evidence. [1]

Model Answer

Problem list (4 marks):

1. Decompensated alcohol-related cirrhosis — Child-Pugh C (11), MELD-Na 26
2. Spontaneous bacterial peritonitis (SBP) — ascitic PMN 420 cells/microlitre, sepsis source
3. Acute kidney injury — rising creatinine, likely evolving hepatorenal syndrome precipitated by SBP
4. Grade 3 hepatic encephalopathy — precipitated by infection; airway risk
5. Tense ascites — symptomatic, impairing ventilation
6. Portal hypertension with varices on carvedilol — secondary prophylaxis
7. Alcohol dependence — needs addiction medicine and thiamine
8. Hyponatraemia (Na 128) and coagulopathy (INR 1.9) [1]

Immediate resuscitation and sepsis management (4 marks):

• Admit to HDU given grade 3 encephalopathy, sepsis and AKI; nurse semi-recumbent, protect airway.
• Spontaneous bacterial peritonitis — ascitic PMN count of 420 confirms SBP (threshold 250 or higher). Start cefotaxime 2 g IV every 8 hours for 5 to 7 days.
• Add intravenous albumin — 1.5 g/kg on day 1 and 1 g/kg on day 3. The Sort trial proved this reduces renal impairment (33% to 10%) and in-hospital mortality (29% to 10%) in SBP [1]. Given he is already AKI and hypotensive, albumin is essential.
• Blood cultures, urine culture, chest X-ray; sepsis bundle with IV fluids cautiously.

Renal management (4 marks):

• Cease all diuretics (spironolactone and frusemide) — diuretics worsen renal hypoperfusion in SBP.
• 48-hour albumin challenge — 1 g/kg/day for 48 hours.
• If creatinine does not improve after 48 hours, diagnose hepatorenal syndrome-AKI (HRS-AKI) and start terlipressin 1 to 2 mg IV every 4 to 6 hours plus albumin. The CONFIRM trial showed terlipressin achieves verified HRS reversal in 32% versus 17% [2]. Monitor closely for respiratory failure (11% risk in CONFIRM) and ischaemia.
• If terlipressin is contraindicated or unavailable, noradrenaline in ICU is the alternative.
• Do not give fresh frozen plasma for the INR of 1.9 — the rebalance theory means INR overestimates bleeding in cirrhosis.

Hepatic encephalopathy (3 marks):

• Identify and treat precipitant — the SBP is the driver.
• Lactulose 30 mL three to four times daily, titrated to two to three soft bowel motions per day.
• Add rifaximin 550 mg BID — he has had recurrent encephalopathy (the variceal bleed history), so this is secondary prophylaxis. The Bass trial showed rifaximin added to lactulose reduces breakthrough HE [3].
• Grade 3 encephalopathy warrants airway observation; avoid sedatives.

Ascites and nutrition (2 marks):

• Once sepsis controlled and renal function stabilised, perform large-volume paracentesis with albumin replacement (8 g per litre removed above 5 L).
• High-protein, high-energy diet — sarcopenia worsens outcomes; do not restrict protein in encephalopathy.
• Thiamine 100 mg IV/IM daily for 3 to 5 days (Wernicke risk in alcohol dependence). [1]

Transplant assessment and prognosis (3 marks):

• MELD-Na of 26 is a strong transplant indication (priority threshold generally MELD greater than or equal to 15; greater than 25 is high priority). Refer urgently to a transplant centre.
• Contraindications to address: establish alcohol abstinence (typically 6 months, though early transplant protocols exist for selected ALD); optimise sepsis and renal function first.
• Begin 6-monthly HCC surveillance (ultrasound plus AFP) if not already in place.
• Prognosis without transplant: decompensated cirrhosis with HRS carries roughly 50% mortality at 1 month. [1]

SAQ 2 — Investigation Interpretation: Ascitic Fluid (10 marks)

Prompt: A 70-year-old woman with cirrhosis of unknown aetiology presents with new ascites. Interpret the following results and outline the next steps. [1]

• Ascitic fluid: albumin 8 g/L, PMN 18 cells/microlitre, culture pending, RBC nil
• Serum albumin 30 g/L
• Bilirubin 42, INR 1.6, platelets 88 [1]

Model Answer

SAAG calculation and interpretation (3 marks):

• SAAG = serum albumin (30) minus ascitic albumin (8) = 22 g/L.
• SAAG 11 g/L or higher = portal hypertension as the mechanism. This confirms her ascites is portal-hypertensive, consistent with cirrhosis (supported by the thrombocytopenia at 88 and the INR of 1.6).
• A low SAAG would instead point to peritoneal carcinomatosis, TB peritonitis or nephrotic syndrome. [1]

SBP exclusion (2 marks):

• Ascitic PMN count is 18 cells/microlitre — well below the 250 threshold — so SBP is excluded. No antibiotics are indicated on these results. Culture is pending but cell count is the diagnostic standard. [1]

Aetiology workup (3 marks):

• The aetiology is unknown — screen viral (HBsAg, anti-HBs, anti-HBc, HCV Ab), metabolic (ferritin/transferrin saturation/HFE genetics, caeruloplasmin for Wilson if under 40, alpha-1-antitrypsin), autoimmune (ANA, SMA, anti-LKM1, IgG, IgM, AMA for PBC), alcohol history (AUDIT-C, AST/ALT ratio).
• Consider MRCP if cholestatic features (raised ALP/GGT) to evaluate for PSC.
• Transient elastography (FibroScan) to stage fibrosis and confirm cirrhosis. [1]

Management and surveillance (2 marks):

• Sodium restriction (less than 88 mmol/day) and diuretics (spironolactone 100 mg plus frusemide 40 mg in a 100:40 ratio).
• Screening upper endoscopy for varices.
• Begin 6-monthly HCC surveillance (ultrasound plus AFP). [1]