CT Scan Utilization Decreases With Implementation of a Clinical Pathway for Children With Suspected Acute
Emily Barricelli1, Julia N Lo Cascio1, Ashley Noiman2
1NYU Grossman Long Island School of Medicine.
Pediatric Emergency Care
|April 21, 2026
Summary
A new clinical pathway significantly reduced computed tomography (CT) scan use for pediatric appendicitis diagnosis. This approach prioritized ultrasound, decreasing CT scans from 39% to 22% and improving emergency department efficiency.
Area of Science:
- Pediatric Surgery
- Diagnostic Imaging
- Healthcare Quality Improvement
Background:
- The National Surgical Quality Improvement Program-Pediatric (NSQIP-P) guidelines recommend limiting computed tomography (CT) scans to under 25% for suspected pediatric appendicitis.
- Overutilization of CT scans in children raises concerns regarding radiation exposure and healthcare costs.
Purpose of the Study:
- To implement and evaluate a multidisciplinary pediatric appendicitis clinical pathway aimed at reducing CT scan utilization.
- To assess the impact of the pathway on diagnostic imaging choices and emergency department length of stay (LOS).
Main Methods:
- A local cohort study reviewed appendicitis cases in patients under 19 years old from 2021 to 2023.
- A clinical pathway was implemented using Plan-Do-Study-Act cycles, emphasizing ultrasound as the primary imaging modality.
- Statistical Process Control charts and Six Sigma rules were used to analyze variations and pathway effectiveness.
Main Results:
- Ultrasound was utilized as first-line imaging in over 90% of cases.
- CT scan utilization decreased from 39% to 22% over the study period.
- Emergency department LOS decreased from an average of 538 to 435 minutes; non-diagnostic ultrasounds decreased from 35% to 20%.
Conclusions:
- Implementation of a pediatric appendicitis clinical pathway successfully reduced CT scan utilization.
- The pathway optimized diagnostic imaging strategies and improved patient flow within the emergency department.
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