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Scholars Journal of Applied Medical Sciences | Volume-3 | Issue-08
Diagnostic efficacy of Color Doppler combined with Gray scale ultrasonography over Modified Alvarado score for diagnosing appendicitis
Swarnava Tarafdar, Ankur Malhotra, A.T. Tayade
Published: Nov. 29, 2015 | 62 63
DOI: 10.36347/sjams.2015.v03i08.056
Pages: 3026-3035
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Abstract
This is a prospective study conducted on 289 patients of 11 to 30 years age group with clinically suspected appendicitis. After Modified Alvarado scoring, ultrasonography (USG) was done. Each patient was then subjected to surgery and the removed appendix was sent for histopathological examination. The histopathological diagnosis was considered as Gold Standard. In comparison to clinical assessment( Modified Alvarado score), Gray scale USG was found better in detecting appendicitis (USG had sensitivity -89.5%, specificity 81%, positive predictive value 89.4 %, negative predictive value 80%, where as modified Alvarado score showed sensitivity 74 %, specificity 80.8 %, positive predictive value 88%, negative predictive value 61.5 %,). The Gray scale and Color Doppler when used in combination showed the highest efficacy in comparison to Gray scale when used alone (Combined Gray scale and Color Doppler USG sensitivity 89.4 %, specificity 94.9 %, positive predictive value - 97 %, negative Predictive value 82.4 %). Therefore, Ultrasonography is definitely better than modified Alvarado score in diagnosing appendicitis and using Color Doppler in addition to Gray scale further improves diagnostic efficacy.