Bacterial contamination of three-way taps--one Australian hospital's experience

Area of Science:

• Medical Microbiology
• Infection Control
• Pediatric Intensive Care

Background:

• Three-way taps are commonly used in intensive care units (ICUs) for fluid management.
• Maintaining sterility of medical devices is crucial for preventing healthcare-associated infections.

Purpose of the Study:

• To investigate the incidence and types of microorganisms colonizing vacant ports of three-way taps.
• To assess the relationship between the duration of use and microbial growth in these devices.

Main Methods:

• Swabs were taken from vacant ports of 424 three-way taps used in 50 pediatric ICU patients.
• Cultured swabs to identify and quantify microbial growth.
• Analyzed growth rates based on the type of line (intravenous, intra-arterial, central venous) and duration of use.

Main Results:

• Twenty-five (6%) of the three-way taps exhibited microbial growth (1-3 colonies).
• Commonly cultured organisms included staphylococci, klebsiella, streptococci, bacilli, and fungi.
• Microbial growth rate increased significantly with the duration of tap usage.

Conclusions:

• A low but notable incidence of microbial contamination exists in three-way tap vacant ports in pediatric ICUs.
• The duration of use is a critical factor influencing the potential for device contamination.
• Implementing strategies to minimize contamination, especially for prolonged use, is recommended.