Single-dose antibiotic prophylaxis for biliary surgery. Cefazolin vs moxalactam

Area of Science:

• Surgical Infectious Diseases
• Pharmacology
• Clinical Trials

Background:

• Surgical site infections (SSIs) are a significant concern following cholecystectomy.
• Antibiotic prophylaxis is standard practice to reduce SSI rates.
• Comparing first-generation and third-generation cephalosporins for prophylaxis is clinically relevant.

Purpose of the Study:

• To compare the efficacy and safety of cefazolin versus moxalactam for single-dose antibiotic prophylaxis in patients undergoing cholecystectomy.
• To identify risk factors predictive of infection in this patient population.

Main Methods:

• A double-blind, prospective, randomized trial involving 90 patients undergoing cholecystectomy.
• Patients received either cefazolin or moxalactam as single-dose prophylaxis.
• Antibiotic levels in plasma, bile, and tissue were measured.
• Infection rates and types of adverse events were recorded.

Main Results:

• No significant difference in overall infection rates (3%) between cefazolin and moxalactam groups.
• Similar antibiotic levels observed in plasma, bile, and tissue for both drugs.
• Advanced age (>65 years) was a predictor of bacterial recovery from bile cultures.

Conclusions:

• Cefazolin and moxalactam demonstrate comparable prophylactic efficacy in cholecystectomy.
• Cefazolin is preferred due to its lower cost and narrower antimicrobial spectrum.
• No significant adverse events, including bleeding disorders, were noted for either antibiotic.