Brett A Fair1, John C Kubasiak1, Imke Janssen2, Jonathan A Myers1, Keith W Millikan1, Daniel J Deziel1, Minh B Luu3. 1. Department of General Surgery, Professional Building, Suite 810, Rush University Medical Center, 1725 West Harrison Street, Chicago, IL 60612, USA. 2. Department of Preventative Medicine, Triangle Office Building, Suite 470, Rush Graduate College, 1700 W. Van Buren Street, Chicago, IL 60612, USA. 3. Department of General Surgery, Professional Building, Suite 810, Rush University Medical Center, 1725 West Harrison Street, Chicago, IL 60612, USA. Electronic address: Minh_B_Luu@rush.edu.
Abstract
BACKGROUND: Surgery is indicated for acute uncomplicated appendicitis but the optimal timing is controversial. Recent literature is conflicting on the effect of time to intervention. METHODS: We queried the American College of Surgeons National Surgical Quality Improvement Project dataset for patients undergoing laparoscopic and open appendectomy between 2007 and 2012. Logistic regression was used to evaluate 30-day morbidity and mortality of intervention at different time periods, adjusting for preoperative risk factors. RESULTS: A total of 69,926 patients undergoing appendectomy were identified. Groups were divided by time to intervention: group 1, less than 24 hours (n = 55,839; 79.9%); group 2, 24 to 48 hours (n = 13,409; 18.6%); and group 3, greater than 48 hours (n = 1,038; 1.5%). After adjustment, the risk of complication remained increased for group 3 versus group 1 or 2 (odds ratio 1.66, 95% confidence interval 1.34 to 2.07). CONCLUSIONS: These data demonstrate equivalent outcomes between time to appendectomy of less than 24 and 24 to 48 hours. There was a 2-fold increase in complication rate for patients delayed longer than 48 hours.
BACKGROUND: Surgery is indicated for acute uncomplicated appendicitis but the optimal timing is controversial. Recent literature is conflicting on the effect of time to intervention. METHODS: We queried the American College of Surgeons National Surgical Quality Improvement Project dataset for patients undergoing laparoscopic and open appendectomy between 2007 and 2012. Logistic regression was used to evaluate 30-day morbidity and mortality of intervention at different time periods, adjusting for preoperative risk factors. RESULTS: A total of 69,926 patients undergoing appendectomy were identified. Groups were divided by time to intervention: group 1, less than 24 hours (n = 55,839; 79.9%); group 2, 24 to 48 hours (n = 13,409; 18.6%); and group 3, greater than 48 hours (n = 1,038; 1.5%). After adjustment, the risk of complication remained increased for group 3 versus group 1 or 2 (odds ratio 1.66, 95% confidence interval 1.34 to 2.07). CONCLUSIONS: These data demonstrate equivalent outcomes between time to appendectomy of less than 24 and 24 to 48 hours. There was a 2-fold increase in complication rate for patients delayed longer than 48 hours.
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