Hiperbilirrubinemia en apendicitis: ¿Es un factor predictivo de perforación?

Abstract

Hyperbilirubinemia in appendicitis - is a predictive factor of perforation? Background: An elevated total bilirubin level can be a marker for perforated appendicitis. Aim: To assess and compare the predictive value of total bilirubin, C-reactive protein (CRP), white-blood cell count, the lapse of symptoms evolution, and systemic inflammatory response syndrome (SIRS) for the diagnosis of perforated appendicitis. Material and Methods: Prospective study of 134 consecutive patients aged 33 ± 16 years (63 males) operated for acute appendicitis of whom 49 had a perforated appendix. A preoperative blood sample was obtained to measure total bilirubin, C reactive protein and complete blood count. A systemic inflammatory response score was calculated. Results: The lapse of symptoms before operation was higher in patients with perforated appendicitis compared with their counterparts without perforation (105.2 ± 79.3 and 38.6 ± 17.5 hours respectively). C reactive protein values were 176 ± 82.6 and 80 ± 76 mg/l respectively, (p = 0.01). Serum bilirubin values were 0.7 ± 0.3 and 1.0 ± 0.5 mg/dl, respectively (p = 0.05). Sixty five percent of patients with perforated appendicitis had a SIRS score between 3 and 4 points. A C reactive protein over 76.7 mg/l, a lapse of symptoms over 34.5 hours and a SIRS score of three or more had the best performance for the prediction of perforated appendicitis. Conclusions: The diagnosis of perforated appendicitis may be suspected based on CRP, SIRS, and the lapse of symptoms before operation. We do not recommend the use of total bilirubin to predict perforation in appendicitis.