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A failure modes and effects analysis study for gynecologic high-dose-rate brachytherapy
Jyoti Mayadev1, Sonja Dieterich1, Rick Harse1
1Department of Radiation Oncology, University of California Davis Medical Center, Sacramento, CA.
Brachytherapy
|July 25, 2015
Summary
A failure modes and effects analysis (FMEA) identified potential risks in gynecologic brachytherapy, improving quality assurance. This process analysis helped refine the quality assurance program to better detect and mitigate failure modes.
Area of Science:
- Medical Physics
- Radiation Oncology
- Quality Improvement
Background:
- Gynecologic brachytherapy is a critical cancer treatment.
- Ensuring high-quality procedures and minimizing errors is paramount.
- Process analysis can identify areas for improvement.
Purpose of the Study:
- To enhance gynecologic brachytherapy quality.
- To reduce reportable events through process analysis.
- To implement findings from a failure modes and effects analysis (FMEA).
Main Methods:
- A multidisciplinary team conducted an FMEA on tandem and ring brachytherapy.
- The procedure was divided into subprocesses and failure modes (FMs).
- Failure modes were scored, ranked by risk priority number (RPN), and analyzed for quality assurance detection efficiency.
Main Results:
- 170 FMs were identified, with 99 scored; RPNs ranged from 1 to 192.
- The top 13 FMs (RPN >80) indicated high severity, primarily related to communication and applicator movement.
- Quality assurance covered all but three of the top 49 FMs.
Conclusions:
- This is the first FMEA for comprehensive gynecologic brachytherapy.
- Identified FMs could severely impact patient treatment.
- The quality assurance program is being continuously adjusted based on FMEA results.
