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Liberal use of computed tomography scanning does not improve diagnostic accuracy in appendicitis
Jose Perez1, James E Barone, Tyr O Wilbanks
1Department of Surgery, The Stamford Hospital/Columbia University College of Physicians and Surgeons Program in Surgery, 190 W. Broad St., CT 06902, USA.
American Journal of Surgery
|March 7, 2003
Summary
Increased use of computed tomography (CT) scans for appendicitis diagnosis did not improve accuracy but raised costs and wait times. Early surgeon involvement may optimize diagnosis and reduce unnecessary CT scans.
Area of Science:
- Medical Imaging
- Surgical Diagnosis
- Healthcare Management
Background:
- A 1994 hospital study established appendicitis practice guidelines.
- Adherence was good, but preoperative computed tomography (CT) scan usage increased.
Purpose of the Study:
- To evaluate the impact of increased preoperative CT scan use on appendicitis diagnosis accuracy and patient outcomes.
- To assess changes in diagnostic accuracy and resource utilization between 1994 and 2000.
Main Methods:
- Retrospective comparison of appendicitis patients from 1994 (n=100) and 2000 (n=118).
- Analysis of CT scan utilization, diagnostic accuracy, normal appendix rates, and Emergency Department length of stay.
Main Results:
- CT scan use for appendectomy diagnosis rose from 11% to 48.3% (P <0.001).
- Normal appendix removal rates did not significantly change (12% to 17.8%, P = 0.317).
- CT scans did not improve diagnostic accuracy (80-81%) and increased preoperative ED length of stay (P <0.001).
Conclusions:
- Preoperative CT scanning did not enhance appendicitis diagnostic accuracy at this institution.
- Increased CT use led to longer ED stays and more normal appendix findings.
- Involving surgeons earlier in CT ordering may improve diagnosis and reduce scan numbers.