A 48-year-old woman with alcohol-induced cirrhosis (Child-Pugh Class C) is admitted with abdominal distension, fever (38.5°C), and abdominal pain. Diagnostic paracentesis shows ascitic fluid protein 1.2 g/dL, WBC 350/μL (85% neutrophils), and culture is pending. Serum creatinine is 1.8 mg/dL (baseline 0.9 mg/dL). What is the most appropriate immediate management?

Question

Accepted Answer

D. Start ceftriaxone 1 g IV daily and albumin 1.5 g/kg on day 1, then 1 g/kg on day 3; recheck paracentesis in 48 hours. ## Management of Spontaneous Bacterial Peritonitis (SBP) with Renal Dysfunction

### Clinical Diagnosis: SBP

**Key Point:** The diagnostic criteria for SBP are met:
- Ascitic fluid neutrophil count **≥250 cells/μL** (this patient: 297.5 neutrophils/μL = 350 × 0.85)
- Clinical signs: fever, abdominal pain, elevated WBC
- No secondary peritonitis (no perforation, no imaging evidence of peritoneal source)

### Complication: Hepatorenal Syndrome (HRS)

This patient has **Type 1 HRS** (rapid renal failure):
- Serum creatinine doubled in <2 weeks (0.9 → 1.8 mg/dL)
- Oliguria likely (not stated but implied by acute rise)
- Occurs in 25–30% of SBP cases; mortality ~50% without treatment

### Evidence-Based Management

| Component | Intervention | Rationale |
|---|---|---|
| **Antibiotic** | Ceftriaxone 1 g IV daily × 7 days | Third-generation cephalosporin; covers Gram-negative organisms; achieves good ascitic penetration |
| **Albumin** | 1.5 g/kg day 1, then 1 g/kg day 3 | Expands effective circulating volume; reduces HRS incidence from 30% → 10%; improves survival |
| **Vasopressor** | Consider terlipressin (if available) | Splanchnic vasoconstriction; further improves renal perfusion in HRS |
| **Monitoring** | Recheck paracentesis only if clinical deterioration | Not routine; culture guides therapy if resistant organism |
| **Diuretics** | Hold (contraindicated in HRS) | Worsen renal perfusion; resume only after renal recovery |

**High-Yield:** Albumin infusion in SBP reduces HRS incidence and mortality — this is a **Class 1A recommendation** in AASLD guidelines.

### Why This Is Correct

1. **Immediate antibiotic coverage:** Ceftriaxone covers 90% of SBP pathogens (E. coli, Klebsiella, Streptococcus pneumoniae)
2. **Albumin expansion:** Restores effective circulating volume and prevents/reverses HRS
3. **No diuretics:** Spironolactone and furosemide are contraindicated in HRS (worsen renal failure)
4. **No dialysis:** HRS is functional renal failure; dialysis does not improve outcomes and delays vasopressor/albumin therapy
5. **Routine repeat paracentesis:** Not indicated unless clinical deterioration; initial diagnosis is secure

**Clinical Pearl:** SBP + HRS is a medical emergency with ~50% mortality. Albumin + antibiotics + vasopressors (terlipressin if available) form the triple therapy that improves survival.

### Why Other Options Are Incorrect

**Option 1 (Repeat paracentesis + culture-guided therapy):** Delays empiric antibiotics. SBP is a clinical diagnosis; empiric therapy must start immediately (do not wait for culture). Repeat paracentesis is only if clinical deterioration or atypical presentation.

**Option 2 (Diuretics + transplant referral):** Spironolactone and furosemide worsen HRS by reducing renal perfusion. Transplant referral is appropriate but not the immediate next step; stabilize the patient first with antibiotics and albumin.

**Option 3 (Haemodialysis + defer antibiotics):** Dialysis does not treat HRS and delays definitive therapy. Antibiotics must be started immediately; waiting for culture results increases mortality. Dialysis may be needed later if renal failure persists, but it is not the first-line intervention.

Answer

A. Start spironolactone 100 mg daily and furosemide 40 mg daily; arrange liver transplant evaluation

Answer

B. Initiate haemodialysis for acute kidney injury and defer antibiotics until culture results

Answer

C. Perform repeat paracentesis immediately and start meropenem if culture grows organism

Explanation

Management of Spontaneous Bacterial Peritonitis (SBP) with Renal Dysfunction

Clinical Diagnosis: SBP

Complication: Hepatorenal Syndrome (HRS)

Evidence-Based Management

Why This Is Correct

Why Other Options Are Incorrect

Practice similar questions

Join our NEET PG community

Component	Intervention	Rationale
Antibiotic	Ceftriaxone 1 g IV daily × 7 days	Third-generation cephalosporin; covers Gram-negative organisms; achieves good ascitic penetration
Albumin	1.5 g/kg day 1, then 1 g/kg day 3	Expands effective circulating volume; reduces HRS incidence from 30% → 10%; improves survival
Vasopressor	Consider terlipressin (if available)	Splanchnic vasoconstriction; further improves renal perfusion in HRS
Monitoring	Recheck paracentesis only if clinical deterioration	Not routine; culture guides therapy if resistant organism
Diuretics	Hold (contraindicated in HRS)	Worsen renal perfusion; resume only after renal recovery