Not all presentations of spontaneous bacterial peritonitis are the same. Adults with ascitic fluid PMN counts above 250/mm³ who have a healthcare-associated or nosocomial infection, recent exposure to broad-spectrum antibiotics, or who present in sepsis or septic shock require a distinct empirical approach — standard community-acquired coverage is not sufficient in these situations.
Diagnosis is established by an ascitic fluid polymorphonuclear (PMN) leukocyte count greater than 250/mm³. This protocol applies when one or more of the following are present:
• Healthcare-associated or nosocomial infection
• Recent prior exposure to broad-spectrum antibiotics
• Admission with sepsis or septic shock
In any of these settings, empirical therapy with broad-spectrum antibiotics should be initiated as first line, with regimen selection informed by individual risk factors.
First-line management involves empirical broad-spectrum intravenous antibiotic therapy, with the specific agents determined by the patient’s exposure history and risk profile for multidrug-resistant organisms. Intravenous albumin is administered in combination with antibiotic therapy.
The complete regimen — including antibiotic selection criteria, combination strategies, carbapenem indications, and albumin administration schedule — is detailed in the full structured protocol.
A diagnostic paracentesis is performed 48 hours after initiating antibiotic therapy to assess response. A successful response requires a decrease in ascitic fluid PMN count of at least 25% from baseline. Failure to reach this threshold indicates a need to broaden antibiotic coverage and evaluate for secondary peritonitis.
DOI: 10.1002/hep.31884
The diagnosis of SBP/SBE is established with a fluid polymorphonuclear (PMN) leukocyte count >250/mm³.
In patients with a health care-associated or nosocomial infection or recent exposure to broad-spectrum antibiotics or who are admitted with sepsis or septic shock, empirical therapy with broad-spectrum antibiotics should be initiated as the first line.
Patients with SBP should be treated with IV albumin in addition to antibiotics (1.5 g/kg at day 1 and 1 g/kg at day 3).
Given increasing recent failure rates of initial antibiotic therapy, which may lead to increased mortality, it is recommended that a diagnostic paracentesis (or thoracentesis for SBE) be performed 48 hours after initiating antibiotic therapy to assess response.
A negative response is defined by a decrease in PMN count <25% from baseline and should lead to broadening the antibiotic spectrum and investigating secondary peritonitis (abdominal imaging studies).
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