Bacterial infections in liver disease

Area of Science:

• Hepatology
• Infectious Diseases
• Gastroenterology

Background:

• Cirrhotic patients frequently acquire bacterial infections in hospitals.
• Common infections include urinary tract infections, spontaneous bacterial peritonitis (SBP), respiratory infections, and bacteremia.
• SBP is a hallmark infectious complication in cirrhosis, defined as infection of ascitic fluid without an intra-abdominal source.

Purpose of the Study:

• To review the diagnosis and treatment of spontaneous bacterial peritonitis (SBP) in cirrhotic patients.
• To highlight the importance of early diagnosis and appropriate antibiotic therapy for SBP.
• To discuss antibiotic prophylaxis strategies and emerging challenges.

Main Methods:

• Diagnosis relies on clinical presentation and ascitic fluid analysis (polymorphonuclear cell count > 250/mm3).
• Positive cultures confirm SBP in about 70% of cases; the remainder are culture-negative SBP.
• Treatment involves diagnostic paracentesis and prompt antibiotic administration.

Main Results:

• The incidence of SBP in hospitalized cirrhotic patients with ascites ranges from 7% to 23%.
• Third-generation cephalosporins are the preferred first-line treatment for SBP.
• Oral quinolones may be used for selected patients, and selective intestinal decontamination with norfloxacin aids prophylaxis.

Conclusions:

• Effective management of SBP requires early diagnosis, diagnostic paracentesis, and adequate antibiotic treatment.
• Third-generation cephalosporins are the primary choice for SBP treatment.
• While selective intestinal decontamination is beneficial, increasing quinolone resistance poses a future challenge.