Evaluation of Modified Alvarado Score and Ultrasonography for the Diagnosis of Acute Appendicitis

Acute appendicitis is one of the commonest surgical conditions. Diagnosis of this disease still remains a problem. Alvarado score is a clinical scoring system used to diagnose this. Modified Alvarado score alone has sensitivity of 95 % and Ultrasonography has 86 %. Combining both the modalities, sensitivity is 86 % but specificity is 100 %. Accuracy of positive diagnosis by Alvarado score alone was 71 % and by Ultrasound alone was 85 % in women. This increased to 92 % by combining both. Modified Alvarado score should be combined with Ultrasonography for the diagnosis of acute appendicitis.