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Ann Surg Treat Res. 2016 Apr;90(4):207-212. English. Original Article. https://doi.org/10.4174/astr.2016.90.4.207
Kim JM , Park JH , Jeong SH , Lee YJ , Ju YT , Jeong CY , Jung EJ , Hong SC , Choi SK , Ha WS .
Department of Surgery, Gyeongsang National University School of Medicine and Gyeongsang National University Hospital, Jinju, Korea. yjleegnu@gmail.com
Gyeongnam Regional Cancer Center, Gyeongsang National University Hospital, Jinju, Korea.
Institute of Health Science, Gyeongsang National University, Jinju, Korea.
Abstract

PURPOSE: This study aimed to evaluate the association between low body mass index (BMI) and morbidity after gastric cancer surgery. METHODS: A total of 1,805 patients were included in the study. These subjects had undergone gastric cancer surgery at a single institution between January 1997 and December 2013. Clinicopathologic and morbidity data were analyzed by dividing the patients into 2 groups: underweight patients (BMI < 18.5 kg/m2) and nonunderweight patients (BMI ≥ 18.5 kg/m2). RESULTS: The overall complication rate as determined by our study was 24.4%. Pulmonary complications occurred more frequently in the underweight group (UWG) than in the non-UWG (10.5% vs. 3.8%, respectively; P = 0.012). Multivariate analysis revealed two independent factors responsible for postoperative pulmonary complications—weight of the patients (UWG vs. non-UWG, 10.8% vs. 3.8%; P < 0.007) and stage of gastric cancer (early stage vs. advanced stage, 3.1% vs. 6.8%; P < 0.023). Multivariate analysis revealed that underweight (UWG vs. non-UWG, 10.8% vs. 3.8%, respectively, P < 0.007) and advanced cancer stage (early stage vs. advanced stage, 3.1% vs. 6.8%, respectively, P = 0.023) were significant risk factors for postoperative pulmonary complications. CONCLUSION: We concluded that underweight patients had a higher pulmonary complication rate. Additionally, underweight and advanced cancer stage were determined to be independent risk factors for the development of postoperative pulmonary complications.

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