Preoperative predictor laboratory markers for complicated appendicitis: A retrospective analysis of single center experience

Abstract

In this study, we aimed to investigate the pre-operative predictive role of the serum white blood cell and platelet counts, C-reactive protein (CRP), bilirubin, amylase, lipase, and sodium levels for complicated appendicitis in patients aged≥18 years. We retrospectively evaluated 574 patients (aged≥18 years) who underwent appendectomy due to acute appendicitis (AA) between March 2018 and March 2022 at our clinic. The patient population was divided into two groups as perioperative complicated and uncomplicated appendicitis and the preoperative predictor role of serum white blood cell counts, platelet counts, CRP, bilirubin, amylase, lipase, and sodium levels were compared for complicated versus uncomplicated appendicitis. In multivariate analyses, age>38 years, the timing of Emergency Department (ED) arrival to admission ≥2 days, CRP ≥3.36 mg/dL, and total bilirubin ≥0.76 mg/dL are independent risk factors for detecting complicated AA. Moreover, in the designed scoring system, the AUC: 0.877 (CI: 0.847-0.907) for perforated AA at scores below or above. Estimation of the complications of AA can help clinicians practically with the scoring system designed because of the determined predictive factors.