Antimicrobial prophylaxis for spinal surgery.

Area of Science:

• Infectious Diseases
• Surgical Oncology
• Clinical Pharmacy

Background:

• Antimicrobial prophylaxis (AMP) practices in Japan are evolving, moving from prolonged postoperative use to evidence-based strategies for surgical site infection (SSI) prevention.
• Previous practices in Japan often involved extended postoperative antimicrobial drug administration, lacking clear evidence for prophylaxis against SSIs.

Purpose of the Study:

• To determine the optimal type and duration of antimicrobial prophylaxis (AMP) for spinal surgery to minimize surgical site infections (SSIs).
• To evaluate the effectiveness of different AMP administration durations and timings in preventing SSIs following spinal surgery.

Main Methods:

• A retrospective study involving 1415 patients undergoing spinal surgery from 1990 to 2008.
• Patients were divided into four groups based on AMP duration: 7 days (postoperative only), 5 days, 3 days, and 2 days (including preoperative and intraoperative dosing).
• Surgical site infection (SSI) frequency was assessed across all four groups.

Main Results:

• SSI rates were 2.6% (7-day group), 0.9% (5-day group), 0% (3-day group), and 0% (2-day group).
• A significant decrease in SSI frequency was observed as the duration of AMP administration was reduced.
• Zero SSI incidence was achieved with 2-day and 3-day AMP regimens.

Conclusions:

• Implementing comprehensive perioperative infection prevention, including preoperative and intraoperative AMP, effectively reduces SSI incidence.
• Shortening the duration of antimicrobial prophylaxis (AMP) to two days is a viable and effective strategy for preventing SSIs in spinal surgery.
• Optimized AMP protocols, focusing on appropriate timing and duration, are crucial for enhancing patient safety and reducing healthcare-associated infections.