PURPOSE: The diagnosis of acute appendicitis remains a challenge in daily clinical practice. The aim of the present study was to determine clinical criteria for a careful and cost-effective integration of computed tomography (CT) scans in the clinical pathway for the diagnosis of acute appendicitis. METHODS: In this retrospective study, we analyzed all patients who were admitted to our hospital with suspected appendicitis (2008-2011). We included all patients who had an appendectomy with or without preoperative CT. Furthermore, we analyzed all patients who received a CT because of suspected appendicitis but did not have an appendectomy. RESULTS: A total of 367 patients were included in this study. A CT was performed in 35 % of the patients with suspected appendicitis. Women had a significantly higher rate of negative appendectomy (NA) (16.5 %) than men (5.3 %). The frequency of NA was 5.7 % in the group of patients who were imaged, whereas it was 11.8 % (p = 0.075) among those who were not imaged. Thereby, CT scans helped to reduce total hospital expenses (<euro>1,317.44 (no CT scan) to <euro>675.85 (CT scan and no operation). Furthermore, CT scans can be avoided in men with normal white blood cell counts who should be observed if not operated immediately. CONCLUSION: CT can be effectively applied for the diagnosis of acute appendicitis. We propose a diagnostic algorithm which helps to simultaneously avoid unnecessary operations and radiation exposure.
PURPOSE: The diagnosis of acute appendicitis remains a challenge in daily clinical practice. The aim of the present study was to determine clinical criteria for a careful and cost-effective integration of computed tomography (CT) scans in the clinical pathway for the diagnosis of acute appendicitis. METHODS: In this retrospective study, we analyzed all patients who were admitted to our hospital with suspected appendicitis (2008-2011). We included all patients who had an appendectomy with or without preoperative CT. Furthermore, we analyzed all patients who received a CT because of suspected appendicitis but did not have an appendectomy. RESULTS: A total of 367 patients were included in this study. A CT was performed in 35 % of the patients with suspected appendicitis. Women had a significantly higher rate of negative appendectomy (NA) (16.5 %) than men (5.3 %). The frequency of NA was 5.7 % in the group of patients who were imaged, whereas it was 11.8 % (p = 0.075) among those who were not imaged. Thereby, CT scans helped to reduce total hospital expenses (<euro>1,317.44 (no CT scan) to <euro>675.85 (CT scan and no operation). Furthermore, CT scans can be avoided in men with normal white blood cell counts who should be observed if not operated immediately. CONCLUSION: CT can be effectively applied for the diagnosis of acute appendicitis. We propose a diagnostic algorithm which helps to simultaneously avoid unnecessary operations and radiation exposure.
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