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KMID : 0604020170320030265
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Korean Journal of Critical Care Medicine
2017 Volume.32 No. 3 p.265 ~ p.274
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The Association of Preoperative Body Mass Index with Acute Kidney Injury in Liver Transplantation Recipients: A Retrospective Study
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Park Ju-Yeon
Park Jung-Hyun
Lee Su-Sung
Ri Hyun-Su
Kim Hye-Jin
Choi Yun-Mi
Choi Yoon-Ji
Yoon Ji-Uk
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Abstract
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Background: Liver transplantation (LT) is a complicated procedure with a high incidence of postoperative acute kidney injury (AKI). Previous studies indicate that even transient or mild post-LT AKI can result in critical conditions, including prolonged stays in hospitals and intensive care units and increased morbidity and mortality. The aim of this study was to investigate the association between body mass index (BMI) and occurrence of AKI in LT recipients.
Methods: Medical data from 203 patients who received LT surgery from January 2010 to August 2016 in a single university hospital setting were retrospectively collected and analyzed. Patients were classified as either underweight (BMI <20 kg/m2) or normal weight (20 ≤ BMI < 30 kg/m2). Demographic data, anesthetic methods, complications, and perioperative laboratory test values of each patient were assessed. Propensity analyses and logistic regression were performed to evaluate the association between BMI and post-LT AKI.
Results: There was no significant difference in occurrence of post-LT AKI between underweight and normal weight patients. The underweight patient group had significantly longer hospital stay compared with the normal weight patient group (P = 0.023).
Conclusions: BMI classification was neither a positive nor negative predictor of postoperative AKI occurrence. However, patients with lower BMI had significantly longer hospital stay compared with their counterparts. Although our study was limited by its retrospective design, our observations suggest that lower BMI might play a role in post-LT AKI.
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KEYWORD
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acute kidney injury, body mass index, liver transplantation
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