Abstract
INTRODUCTION: 
 Acute appendicitis is a common surgical emergency. Accurate diagnosis and timely intervention reduces mortality and morbidity. This study compared the efficacy of Tzanakis and Alvarado score in diagnosis of acute appendicitis.
 METHODS:
 A prospective, non randomized study was conducted in 100 consecutive patients who had undergone emergency appendectomy from May 2008 to October 2008. Tzanakis and Alvarado scores were obtained at the time of admission. Final diagnosis of acute appendicitis was based on histological findings.
 RESULTS:
 The sensitivity, specificity and overall diagnostic accuracy of Tzanakis score was 91.48% and 66.66% and 90% respectively. The sensitivity, specificity and overall diagnostic accuracy of Alvarado score was 81.91% and 66.66% and 81% respectively. Negative appendectomy rate was 6%.
 CONCLUSIONS:
 Tzanakis score is an effective modality to establish the accurate diagnosis of acute appendicitis.
 Keywords: acute appendicities, Tzanakis score, Alvarado Score.
Highlights
Acute appendicitis is a common surgical emergency
This study compares the efficacy of Tzanakis score with Alvarado score to diagnose Acute appendicitis (AA)
Between May 2008 and October 2008, 107 patients with the clinical diagnosis of AA were assessed for eligibility; of these three refused to participate and four had an alternative diagnosis during operation
Summary
Acute appendicitis is a common surgical emergency. This study compared the efficacy of Tzanakis and Alvarado score in diagnosis of acute appendicitis. Acute appendicitis (AA) has a lifetime risk of 8.6% and 6.7% for men and women respectively.. The accuracy of clinical examination in diagnosing AA is 70% to 87%.4,5. Sigdel et al Tzanakis Score vs Alvarado Score in Acute Appendicitis. Alvarado score is widely used to diagnose AA; a score of 7 or more is considered diagnostic requiring surgery.. Its sensitivity and specificity ranges from 73-90% and 87-92% respectively.. There are altogether four variables and 15 points and a score of 8 or more diagnoses AA requiring surgery. Specificity and accuracy are 95.4%, 97.4% and 96.5% respectively.. This study compares the efficacy of Tzanakis score with Alvarado score to diagnose AA
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