TP9.2.1Evaluating the incidence, the predictors and the outcomes of patients with negative appendicectomy

Abstract Introduction Negative appendicectomy (NA) is still a major issue following appendicectomy. We evaluated the rate and predictors of negative in cohort. Patients Methods Data patients who underwent emergency appendicectomies over year was collected analysed. The absence inflammation and/or other significant pathology appendix considered by standard definition. A stricter definition NA inflammatory cells appendix. (NAR) calculated using criteria (NAR-SDC) strict (NAR-STC). Results 372 were included, 179 males 193 females with median age 27 (5-94) years. Median duration symptoms waiting time to surgery 2 days 1 day respectively. mean admission WBC CRP 12,600 (3000-38000)/mm3 66.9 (1-323) mg/L Laparoscopic performed 93.5% conversion 4.6%. NAR-SDC 10.2% NAR-STC 25.8%. NAR significantly higher than (39.4% versus 11.1%; p-value 0.0001). younger (p-value 0.0001), had lower total 0.014) 0.0001) on admission. Independent are female gender, more 3 days, WBC. Conclusion problem management acute right abdominal pain. Our compared favourably reported rates. Female independent NA.