Reduction of Central Line-associated Bloodstream Infection Through Focus on the Mesosystem: Standardization, Data,...

Area of Science:

• Healthcare Improvement Science
• Patient Safety
• Infection Prevention

Background:

• Reducing central line-associated bloodstream infections (CLABSI) is critical but challenging due to practice variations.
• A redesigned mesosystem provides oversight and alignment for unit-level microsystems.
• An A3 framework was implemented to standardize practices and improve accountability.

Purpose of the Study:

• To evaluate the impact of a mesosystem redesign and A3 framework on CLABSI rates.
• To assess the effectiveness of practice standardization, data transparency, and accountability in reducing CLABSIs.
• To demonstrate sustained CLABSI reduction through improved system-level alignment.

Main Methods:

• A quasi-experimental study was conducted at a children's hospital.
• A mesosystem-focused A3 framework drove the initiative, emphasizing bundle adherence.
• CLABSI rates were compared pre-intervention (Jan 2015-Sep 2017) and post-intervention (Jul 2018-Jun 2019) using Poisson regression.

Main Results:

• Pre-intervention CLABSI rates ranged from 1.0 to 2.3 per 1,000 central line-days.
• Post-intervention CLABSI rates decreased to a range of 0.4 to 0.7 per 1,000 central line-days.
• A statistically significant 71% reduction in CLABSI rates was observed post-intervention, adjusted for trends.

Conclusions:

• Redesigning the mesosystem and focusing on standardization, transparency, and accountability led to a significant hospital-wide CLABSI rate decline.
• This approach achieved sustained CLABSI reduction for the first time in years.
• Alignment across microsystems is crucial for high-fidelity implementation of practice standards in healthcare delivery.