Reduction of Blood Culture Contamination Through an Evidence-Based, Multidisciplinary Quality Improvement Initiative

Area of Science:

• Clinical Pathology
• Infectious Diseases
• Quality Improvement Science

Background:

• Blood culture contamination leads to diagnostic errors and increased healthcare costs.
• The hospital's contamination rate exceeded the acceptable benchmark of 3%.

Purpose of the Study:

• To decrease blood culture contamination rates through a hospital-wide, evidence-based quality improvement (QI) strategy.
• To enhance patient safety and optimize antimicrobial use.

Main Methods:

• A multidisciplinary team utilized Plan-Do-Study-Act (PDSA) cycles for a QI initiative.
• Interventions included revising standard operating procedures, implementing standardized training, providing unit-level feedback, and standardizing devices.

Main Results:

• The blood culture contamination rate decreased from 4.74% to 2.82% post-intervention.
• Sustained improvement was observed over one year, with rates dropping to 2.42%.
• Increased blood culture volume and reduced reporting time were additional positive outcomes.

Conclusions:

• Multidisciplinary collaboration and evidence-based QI are crucial for reducing and sustaining lower blood culture contamination rates.
• Quality improvement programs using PDSA cycles offer a replicable framework for enhancing patient safety, diagnostic accuracy, and antimicrobial stewardship.