• O M Akturk, M Cakir, D Yildirim, Y M Vardar, S Ozdemir, and M Akinci.
• Department of General Surgery, Haseki Training and Research Hospital, Istanbul, Turkey.
• Niger J Clin Pract. 2020 Jul 1; 23 (7): 975-979.

BackgroundOpen appendectomy (OA) has been the gold standard for a long time. Laparoscopic appendectomy (LA) has gained wide acceptance and popularity, outdoing open approach. Yet, conversion may be required when laparoscopic approach fails.AimsTo predict conversion from laparoscopic appendectomy to open appendectomy sing Oreo-ratio radiological appendices diameter.Materials And MethodsThis is a retrospective cohort study conducted on 320 (included) patients who underwent appendectomy between January 2018 and August 2018 in the General Surgery departmentof Haseki Training and Research Hospital, Istanbul, Turkey. Appendiceal diameter obtained during preoperative radiological screening was evaluated about its relationship to conversion from LA to OA. Age, sex, inflammatory serum parameters and pathology reports were also investigated.ResultsA total of 269 (84%) cases were started LA and 17 (6,3%) laparoscopic cases were converted to open. The appendix diameter, the grade of inflammation (perforated or gangrenous), age, and c-reactive protein (CRP) were found to have significant importance in conversion, P = 0.003, P = 0.000, P = 0.042, and P = 0.018, respectively. When a cutoff of 50 years was chosen for age, the odds ratio (OR) was 3. For the appendiceal diameter of 14 mm, the OR was 3.0286.ConclusionPreoperative evaluation of appendix diameter is a quick and useful method for a surgeon to distinguish cases with risk of conversion in the emergency department. The other risk factors associated with conversion of LA to OA are grade of inflammation, age and CRP levels.

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