Ohmann Score versus Modified Alvarado Score for Diagnosis of Acute Appendicitis

¹Department of General Surgery, Bir Hospital, National Academy of Medical Sciences(NAMS), Kathmandu, Nepal

²Department of Anesthesiology and Intensive Care, Bir Hospital, National Academy of Medical Sciences(NAMS), Kathmandu, Nepal

³Department of Internal Medicine, All Nepal Hospital, Kathmandu, Nepal

⁴Department of Internal Medicine, Nepalese Army Institute of Health Sciences, Kathmandu, Nepal

*Corresponding author: Dr. Srikant Agrawal, MS, Department of General Surgery, Bir Hospital, National Academy of Medical Sciences, Mahaboudha, Kathmandu 44600, Nepal, Tel: +9779860123448,  ORCID: 0000-0002-0371-4821, Email: [email protected]

Received Date: September 16, 2024

Publication Date: October 11, 2024

Citation: Srikant A, et al. (2024). Ohmann Score versus Modified Alvarado Score for Diagnosis of Acute Appendicitis. Gastro Res. 3(2):11.

Copyright: Srikant A, et al. © (2024).

ABSTRACT
Introduction: Acute appendicitis is one of the most common causes of acute abdomen. Early and accurate diagnosis is crucial to prevent morbidity and mortality. The Modified Alvarado Score is the most extensively used scoring system for diagnosing acute appendicitis. This study aims to assess the validity of the Ohmann Score in our population and compare it with the commonly used Modified Alvarado Score. Materials and Methods: A prospective comparative observational study was conducted in the Department of General Surgery at our hospital, enrolling a total of 85 patients with suspected acute appendicitis. The Ohmann Score and Modified Alvarado Score were calculated for each patient at the time of admission, and histopathological findings after surgery were correlated to predict the sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) for both scoring systems. Results: In this study, data from 85 patients were analyzed. The Modified Alvarado Score had a sensitivity of 59.49%, specificity of 66.67%, PPV of 95.92%, and NPV of 11.11%. In comparison, the Ohmann Score had a sensitivity of 89.87%, specificity of 83.33%, PPV of 98.61%, and NPV of 38.46%, demonstrating higher sensitivity, specificity, PPV, and NPV. The area under the ROC curve for the Ohmann Score was 0.866 (95% CI: 0.775–0.930), compared to 0.624 (95% CI: 0.513–0.727) for the Modified Alvarado Score. Conclusion: The Ohmann Score is a feasible and easy-to-use scoring system for diagnosing acute appendicitis, with better sensitivity, specificity, positive predictive value, and negative predictive value compared to the Modified Alvarado Score.
Keywords: Acute Appendicitis, Ohmann Score, Modified Alvarado Score