Epidural Catheter Bacterial Colonization and Infection in a Secondary Portuguese Hospital Setting

Area of Science:

• Medical Microbiology
• Infectious Diseases
• Anesthesiology

Background:

• Epidural analgesia is vital for postoperative pain management but poses infection risks, including bacterial colonization.
• Understanding epidural catheter colonization and infection rates is crucial for patient safety.

Purpose of the Study:

• To determine the incidence of epidural catheter colonization and infection in a Portuguese hospital.
• To identify common microorganisms, their antibiotic resistance profiles, and potential risk factors for colonization.

Main Methods:

• A prospective observational study was conducted from November 2022 to March 2023.
• 215 adult patients receiving epidural analgesia were included, with data on demographics, surgery, and epidural technique collected.

Main Results:

• The incidence of bacterial colonization was 16.3%, with Staphylococcus epidermidis being the most frequent isolate (37.1%).
• A high rate of antibiotic resistance (74.3%) was observed among the isolates.
• No cases of epidural space infection were documented; multiple punctures may increase colonization risk.

Conclusions:

• Epidural catheter colonization is relatively common (16.3%), often by Staphylococcus epidermidis.
• Clinical infections post-epidural analgesia are rare despite colonization.
• The significant antibiotic resistance necessitates enhanced antimicrobial stewardship and aseptic techniques.