Résumé
To compare the frequency of inflamed appendix in suspected patients of acute appendicitis having Modified Alvarado Score [MAS] of 7 or more with patients having MAS of 6 or below. Comparative cross sectional study. The study was carried out at Surgical Departments of Combined Military Hospital [CMH] and Military Hospital [MH] Rawalpindi from April 2006 to April 2007. This study involved 100 patients who were operated with provisional diagnosis of acute appendicitis. Preoperatively MAS of each patient was calculated and the patients were divided in two groups. Group-l had MAS of 7 or more while Group-ll had MAS of 6 or below. Postoperatively appendices of all the patients were sent for histopathological examination and its result regarding presence or absence of acute appendicitis was then compared with MAS of respective group. [a] Group-l :- A total of 72 patients with 64 [88.9%] positive inflamed appendices on histology. Negative appendicectomy rate 8 [11.1%], [b] Group-ll:-A total of 28 patients with 8 [28.6] positive inflamed appendices. Negative appendicectomy rate 20 [71.4%]. There is statistical significant difference of positive appendicectomy rate between two groups with [p-value<0.001]. Frequency of inflamed appendix is more in patients having MAS of seven or above. The number of negative appendicectomies can be reduced by using MAS in clinical practice