Validación de escalas RIPASA y Alvarado Modificada para diagnóstico de apendicitis aguda. Hospital Vicente Corral Moscoso y José Carrasco Arteaga. Cuenca 2017

Abstract

Objective: To determine which diagnostic scale between RIPASA and modified Alvarado is more effective in the diagnosis of acute appendicitis.

Method and materials: A validation study of diagnostic tests was carried out that compared the scales of RIPASA and Modified Alvarado, with the histopathological result as a gold test. The sample consisted of 201 patients who attended the emergency service of surgery of the Hospitals José Carrasco Arteaga and Vicente Corral Moscoso with a diagnosis of acute appendicitis and who underwent surgery. The analysis was performed using Excel software, R program for Windows version 1.0.3 and the SPSS program version 25

Results: The RIPASA scale obtained a sensitivity and specificity of 98.34% and 75%, respectively, compared to 93.92% and 85% for the Modified Alvarado scale. The diagnostic accuracy was 96.02% for RIPASA and 93.03% for the Modified Alvarado score, showing a difference of 2.99% statistically significant (p 0.006). However, the areas under the curve of the two tests are similar (RIPASA 0.963, Alvarado modified 0.964).

Conclusions: The scales of RIPASA and Alvarado Modified have a high sensitivity, specificity and diagnostic precision for acute appendicitis and could be a useful tool, decreasing the use of complementary tests and facilitating decision making in our population