LAUSR

40 Utility of preoperative laboratory evaluation in patients without significant medical comorbidities undergoing hysterectomy for benign indications S. Sears, C. E. Bretschneider, J. Mangel, S. A. El-Nashar, S. T. Mahajan, D. Sheyn OB/GYN, University Hospitals Case Medical Center, Cleveland, OH, MetroHealth Medical Center, Cleveland, OH, CCF, Cleveland, OH OBJECTIVES: To evaluate whether preoperative laboratory tests are predictive of surgical complications in the first 30 days after benign hysterectomy MATERIALS AND METHODS: Data was collected from American College of Surgeons National Surgical Quality Improvement Program (NSQIP) database of patients who underwent hysterectomy with or without adnexectomy for benign indications between 2014 and 2016. Patients with American Society of Anesthesiology class 3 or 4 were excluded. Patient demographic, preoperative, and intraoperative characteristics were collected. Patients were stratified into those who underwent at least one preoperative laboratory test and Preoperative laboratory test values were collected and divided into normal and abnormal using normal accepted values. The primary outcome was the composite complication rate between groups. Pairwise analysis was conducted using Student’s t-test, Fisher’s exact test, and Wilcoxon Rank-Sum where appropriate. Multivariable regression analysis was used to determine which variables are independently predictive of postoperative complications.