Evaluation of RIPASA and ALVARADO Score for Diagnosis of Acute Appendicitis

Abstract

Background:To evaluate RIPASA and
ALVARADO scores for the diagnosis of acute
appendicitis.
Methods : In this cross sectional study, patients
presenting with features suggestive of acute
appendicitis and who had undergone
appendectomy, were included. All those patients
whose follow up was not possible with
histopathology reports were excluded .Sampling
technique was non probability random sampling
technique.Frequencies , percentages were calculated
for categorical variables i.e. different parameters of
RIPASA and ALVARDO scoring system. Sensitivity
and specificity of both scoring system was checked
keeping histopathology reports as gold standard .
Results :Mean age was 20.2 years. Minimum
RIPASA score was 5.5 , maximum 14 ,mean 10.64 and
range turned out to be 8.50 with standard deviation
of 1.639. P value for RIPASA score was 0.015 . 155
cases had RIPASA score of 7.5 and above . Maximum
ALVARADO score was 9 and minimum 2 , mean of
8.13 and standard deviation of 1.48. Majority
(92.5%) had ALVARADO score more than 5 . P value
for ALVARADO score was 0.001 .The gold standard
for diagnosing acute appendicitis was
histopathology report which was positive in
90.6%.Sensitivity of RIPASA score 95 %
ALVARADO 88 % .Specificity of RIPASA was 21 %
while of ALARADO 42 %.
Conclusion: RIPASA score >7 and ALVARADO >
6 are significant for diagnosing appendicitis
.RIPASA is more sensitive but less specific than
ALVARADO score for diagnosing acute
appendicitis.