Spontaneous bacterial peritonitis: from pathophysiology to prevention

Area of Science:

• Hepatology
• Infectious Diseases
• Immunology

Background:

• Cirrhosis significantly increases susceptibility to bacterial infections, with spontaneous bacterial peritonitis (SBP) being the most common.
• Bacterial infections, particularly SBP, are major causes of morbidity and mortality in advanced cirrhosis, often leading to multi-organ failure.
• Bacterial translocation from the gut, driven by altered flora, portal hypertension, and immune dysfunction, is a key mechanism in SBP development.

Purpose of the Study:

• To review the epidemiology, mechanisms, and management of bacterial infections in patients with cirrhosis.
• To highlight the importance of antibiotic prophylaxis and treatment strategies for spontaneous bacterial peritonitis.
• To discuss the role of bacterial translocation and systemic inflammation in the pathogenesis of infections in cirrhosis.

Main Methods:

• Literature review of studies on bacterial infections in cirrhosis.
• Analysis of the pathophysiology of spontaneous bacterial peritonitis.
• Evaluation of current guidelines for antibiotic prophylaxis and treatment.

Main Results:

• Spontaneous bacterial peritonitis (SBP) is a frequent complication in advanced cirrhosis, predominantly caused by Gram-negative bacteria.
• Bacterial infections in cirrhosis trigger a heightened systemic inflammatory response, contributing to poor prognosis.
• Antibiotic prophylaxis is recommended for high-risk patients, with third-generation cephalosporins often preferred over fluoroquinolones due to resistance concerns.

Conclusions:

• Bacterial infections, especially SBP, pose a significant threat to patients with cirrhosis, necessitating prompt diagnosis and management.
• Primary and secondary antibiotic prophylaxis play vital roles in preventing SBP and its recurrence.
• Understanding the mechanisms of bacterial translocation and immune dysfunction is crucial for developing novel therapeutic strategies.