Investigation Study the Specificity and Sensitivity of Ripasa and Alvarado Score in the Diagnosis of Acute Appendicitis in Patients Referred to Shaheed Rajaee Hospital [2016-2018]

Introduction: Appendicitis is one of the most prevalent causes of abdominal pain requiring surgery. Diagnosis of appendicitis is one of the important challenges of surgeons in emergency care. Delay in the diagnosis of appendicitis is associated with an increase in disability and mortality. The timely and correct diagnosis of appendicitis is necessary to reduce the complications of appendicitis rupture. The purpose of this study was to evaluate Alvarado scoring systems and RIPASA in the diagnosis of acute appendicitis. Methods: In this prospective study, the patients referring to Shahid Rajaei Hospital of Tonekabon between 2016 and 2017 who were suspected of acute appendicitis were studied. After the patients were visited by the emergency physician and the on call surgeon, in the case of confirmation of acute appendicitis of the patient, routine tests before the surgery were done and also Alvarado and RIPASA scoring system were determined for the patient. In this research. Results: 274 patients participated in this study, of which 170 (62.05%) were male and 104 (37.95%) were female. The mean age of patients was 28.18 ± 15.18 years. The sensitivity, specificity, positive predictive value and negative predictive value of the Alvarado benchmark were 78%, 51%, 92.1%, and 24%, respectively. Sensitivity, specificity, positive predictive value and negative predictive value of RIPASA were 73.8%, 63% 93.6% and 25% respectively. Conclusions: The results show that Alvarado and RIPASA scoring systems can be useful for diagnosis of the patients with acute appendicitis. These two methods can be applied easily and they are cheap and available RIPASA method has a higher specificity and positive predictive value than Alvarado method. Therefore, it is suggested that RIPASA method be used for diagnosing the acute appendicitis.