Device Infection Using Chlorhexidine Irrigation vs an Antibacterial Envelope: A Propensity Score-Matched Analysis

Area of Science:

• Cardiology
• Infectious Disease Prevention
• Medical Device Technology

Background:

• Cardiac implantable electronic device (CIED) infections are a significant cause of patient morbidity.
• These infections increase healthcare costs, particularly in patients undergoing high-risk procedures.

Purpose of the Study:

• To compare the infection incidence between two CIED infection prevention strategies.
• To evaluate chlorhexidine gluconate (CHG) pocket irrigation versus antibacterial envelope (ABE) use.

Main Methods:

• Retrospective observational study of high-risk CIED interventions (2018-2024).
• Included patients received either CHG irrigation or ABE.
• Propensity score matching was used to control for baseline and procedural characteristics.

Main Results:

• No statistically significant difference in CIED-related infection risk between CHG and ABE groups (0.8% vs 0.8%).
• After propensity score matching, infection rates remained similar (1.1% vs 1.1%).
• No adverse events were reported with CHG irrigation.

Conclusions:

• CHG pocket irrigation demonstrates comparable efficacy to ABE in preventing CIED infections in high-risk procedures.
• CHG is a safe and potentially more cost-effective option due to lower cost and wider availability.
• This could expand infection prevention benefits to a broader patient population.