Peroperative cephradine concentrations in the gall bladder wall and bile

Area of Science:

• Pharmacology
• Surgical Infection Prophylaxis

Background:

• Antibiotic prophylaxis is crucial in preventing surgical site infections.
• Cephradine is a first-generation cephalosporin antibiotic used for various infections.

Purpose of the Study:

• To evaluate the efficacy of different cephradine administration routes in achieving adequate therapeutic concentrations in surgical patients.
• To determine the optimal dosing regimen for cephradine in patients undergoing cholecystectomy.

Main Methods:

• Assaying cephradine levels in serum, gall bladder wall, and bile from the gall bladder and common bile duct.
• Comparing a single intravenous dose (1g) at anesthetic induction versus a multi-dose oral/intramuscular regimen.
• Analyzing data from 24 patients undergoing elective cholecystectomy.

Main Results:

• Intravenous cephradine achieved adequate antibacterial levels in serum, choledochal bile, and gall bladder wall.
• The oral/intramuscular regimen resulted in significantly lower cephradine concentrations across all sample types.
• Adequate levels were found in 100% of gall bladder wall samples with IV administration.

Conclusions:

• A single 1g intravenous dose of cephradine at anesthetic induction provides satisfactory antibacterial concentrations for prophylaxis during gall bladder surgery.
• Oral and intramuscular cephradine dosing regimens were found to be unsatisfactory for achieving adequate prophylaxis in this surgical context.