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A prospective evaluation of the modified Alvarado score for acute appendicitis in children
C P Macklin1, G S Radcliffe, J M Merei
1Department of Paediatric Surgery, United Leeds Teaching Hospitals Trust.
Insights
The modified Alvarado score shows moderate accuracy in diagnosing pediatric appendicitis, but current clinical practice is more effective. This study highlights the need for improved diagnostic tools for acute abdominal pain in children.
Area of Science:
- Pediatric Surgery
- Diagnostic Accuracy
- Acute Abdominal Pain
Background:
- Acute appendicitis is a common surgical emergency in children.
- Accurate preoperative diagnosis is crucial to minimize negative appendicectomies and prevent complications like perforation.
- The modified Alvarado score is a commonly used clinical tool for diagnosing appendicitis.
Purpose of the Study:
- To prospectively evaluate the accuracy of the modified Alvarado score in the preoperative diagnosis of acute appendicitis in children.
- To compare the diagnostic performance of the modified Alvarado score with current clinical practice.
Main Methods:
- Prospective study of 118 children with acute abdominal pain over six months.
- Assessment of the modified Alvarado score's sensitivity and specificity for appendicitis.
- Comparison of diagnostic accuracy between the score and clinical judgment.
Main Results:
- The modified Alvarado score demonstrated a sensitivity of 76.3% and a specificity of 78.8% for diagnosing appendicitis (score >= 7).
- The false-positive appendicectomy rate was 11.6% among children who underwent surgery.
- No cases of perforated appendix were missed in children managed conservatively based on clinical observation.
Conclusions:
- Current clinical practice in diagnosing acute appendicitis in children is more accurate than the modified Alvarado score.
- The modified Alvarado score has limitations in accurately diagnosing pediatric appendicitis.
- Further research is needed to develop more precise diagnostic methods for pediatric appendicitis.
Abstract:
The accuracy of the modified Alvarado score was assessed prospectively in the preoperative diagnosis of acute appendicitis in children. A consecutive series of 118 patients (54 boys, 64 girls) with acute abdominal pain was studied prospectively over a 6 month period. Appendicitis was confirmed in 38 of 43 children undergoing appendicectomy, giving a false-positive appendicectomy rate of 11.6%. No child under active observation was subsequently found to have a perforated appendix. The overall sensitivity of a modified Alvarado score of > or = 7 was 76.3% and its specificity was 78.8%. Current clinical practice is more accurate than the modified Alvarado score in the diagnosis of acute appendicitis in children.