RT Journal Article SR Electronic T1 Blood loss closely correlates with body mass index in total hip arthroplasty performed through direct lateral approach JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 709 OP 713 VO 34 IS 7 A1 Xiao-Wei Yu A1 Zi-Sheng Ai A1 You-Shui Gao A1 Chang-Qing Zhang YR 2013 UL http://smj.org.sa/content/34/7/709.abstract AB OBJECTIVE: To investigate total blood loss (TBL), intraoperative blood loss (IBL), post-operative drainage (POD), and other related variables in total hip arthroplasty (THA) performed through direct lateral approach.METHODS: This study was completed in Shanghai Sixth People's Hospital, Shanghai, China, between January and December 2010. We analyzed 113 patients treated by THA through direct lateral approach. Recordable blood loss (RBL) was measured and TBL was calculated according to the Gross formula. Ordinal logistic regression analysis was used for TBL, IBL, and POD, with gender, age, body mass index (BMI), disease duration, and operative time as independent variables.RESULTS: The average operative time was 51.5 +/- 10.4 (range: 35-70) minutes, with an average RBL of 454 +/- 144 (range: 150-180) ml. Average TBL was significantly higher (975 +/- 355, range: 430-2020 ml; p<0.001). In the analysis of variables, BMI closely correlated with TBL, IBL, and POD, with odds ratios of 4.80 (95% CI: 2.63-8.78 [TBL]), 5.39 (95% CI: 2.84-10.25 [IBL]), and 4.37 (95% CI: 2.43-7.89 [POD]). Moreover, TBL (54.172), IBL (55.198), and POD (39.139) correlated with trend test BMI.CONCLUSION: The TBL, IBL, and POD closely correlate with BMI in patients undergoing THA through direct lateral approach.