The Impact of Pneumonia PCR Panel Testing in the PICU: A Quality Improvement Study

Area of Science:

• Infectious Diseases
• Pediatric Critical Care
• Clinical Microbiology

Background:

• Inappropriate antibiotic use fuels antibiotic resistance.
• Reducing antibiotic length of therapy (LOT) is crucial for combating resistance.
• Pediatric intensive care unit (PICU) patients with respiratory infections often require prolonged antibiotic treatment.

Purpose of the Study:

• To evaluate the impact of implementing a pneumonia polymerase chain reaction (PCR) panel on antibiotic LOT in ventilated PICU patients.
• To assess if PCR testing improves the speed of pathogen identification and influences antibiotic stewardship.
• To determine the effect of PCR implementation on clinical outcomes such as ventilator-free days, PICU LOS, and mortality.

Main Methods:

• A single-center, pre- and post-implementation cohort intervention study was conducted.
• Pneumonia PCR panels were used for all PICU patients evaluated for acute tracheitis or pneumonia during the post-implementation phase.
• Patient data, including time to organism identification, LOT, and clinical outcomes, were compared between pre- and post-implementation groups.

Main Results:

• The post-implementation group showed a significant reduction in LOT (5 vs. 9 days, p < 0.001) and faster time to organism identification (5 vs. 67 hours).
• Antibiotic regimens were adjusted based on PCR results in 60% of post-implementation patients.
• No significant differences were observed in ventilator-free days, PICU length of stay, or mortality between the groups.

Conclusions:

• Pneumonia PCR panel testing facilitates rapid pathogen identification in critically ill children.
• Implementing pneumonia PCR testing is associated with a significant reduction in antibiotic LOT.
• PCR testing represents a valuable tool for antibiotic stewardship in the PICU setting.