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Efficacy of preoperative computed tomography imaging to reduce negative appendectomies in patients undergoing surgery for left lower quadrant abdominal pain.

AbstractBACKGROUND:
Clinical assessment of acute appendicitis can be challenging due to atypical presentation. Computed-tomography can reduce negative appendectomies but not without adverse effects. We report our experience with preoperative CT-scan in patients with suspected acute appendicitis.
PATIENTS AND METHODS:
During 3-years, 257 adult patients underwent appendectomy. We retrospectively reviewed clinical information, CT-scans, histological data. Patients were divided in four groups: Group I: low clinical probability without CT-scan; Group II: low clinical probability with CT-scan; Group III: high clinical probability without CT-scan; Group IV: high clinical probability with CT-scan. Negative appendectomies were determined from histological examination. Negative appendectomy rate was compared between groups of the same clinical probability differing on whether a pre-operative CT scan was performed or not (Group I vs II, Group III vs IV).
RESULTS:
Groups I,II,III,IV included 12.4%, 18.2%, 54.5% and 14.8% of patients, respectively. The corresponding negative appendectomy rates were 18.7%, 4.3%, 4.2% and 2.6%. Odds ratio of negative appendectomy for patients without CT-scan was 5.2 (95% CI: 1.2-27.7) when there was low clinical probability and 1.6 (95% CI: 0.2-14.2) for high clinical probability.
CONCLUSION:
Patients with low clinical probability of acute appendicitis benefit the most from preoperative CT while this does not apply to patients with high clinical probability.
AuthorsN Kontopodis, A Kouraki, G Panagiotakis, M Chatziioannou, K Spiridakis
JournalIl Giornale di chirurgia (G Chir) 2014 Sep-Oct Vol. 35 Issue 9-10 Pg. 223-8 ISSN: 0391-9005 [Print] Italy
PMID25419588 (Publication Type: Evaluation Study, Journal Article)
Topics
  • Abdominal Pain (etiology)
  • Acute Disease
  • Adult
  • Appendectomy
  • Appendicitis (complications, diagnostic imaging, surgery)
  • Female
  • Humans
  • Male
  • Preoperative Care
  • Retrospective Studies
  • Tomography, X-Ray Computed

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