Department of Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire 03756, USA.
J Arthroplasty. 2010 Dec;25(8):1250-7.e1. doi: 10.1016/j.arth.2009.09.009. Epub 2010 Feb 19.
We identified all total knee arthroplasty patients between 1996 and 2004 and classified them by preoperative body mass index (BMI) as normal (BMI, 18.5-24.9 kg/m(2)), overweight (BMI, 25.0-29.9 kg/m(2)), obese (30-34.9 kg/m(2)), or morbidly obese (≥ 35.0 kg/m(2)). Of 5521 patients, 769 had a normal BMI, 1938 were overweight, 1539 were obese, and 1275 were morbidly obese. Adjusted length of stay was no different between normal (4.85 days), overweight (4.84 days), obese (4.86 days), or morbidly obese patients (4.93 days) (P = .30). Overall costs were similar among normal ($15,386), overweight ($15,430), obese ($15,646), or morbidly obese patients ($15,752) (P = .24). Postsurgical costs were no different among normal ($9860), overweight ($9889), obese ($10,063), or morbidly obese patients ($10,136) (P = .44). Our results suggest that increased BMI does not lead to increased hospital resource use for total knee arthroplasty.
我们确定了 1996 年至 2004 年间所有接受全膝关节置换术的患者，并根据术前体重指数（BMI）将其分为正常（BMI18.5-24.9kg/m2）、超重（BMI25.0-29.9kg/m2）、肥胖（BMI30-34.9kg/m2）或病态肥胖（BMI≥35.0kg/m2）。在 5521 名患者中，769 名患者的 BMI 正常，1938 名患者超重，1539 名患者肥胖，1275 名患者病态肥胖。调整后的住院时间在正常（4.85 天）、超重（4.84 天）、肥胖（4.86 天）或病态肥胖患者（4.93 天）之间没有差异（P =.30）。正常（15386 美元）、超重（15430 美元）、肥胖（15646 美元）或病态肥胖患者（15752 美元）的总术后费用相似（P =.24）。正常（9860 美元）、超重（9889 美元）、肥胖（10063 美元）或病态肥胖患者（10136 美元）的术后费用无差异（P =.44）。我们的研究结果表明，BMI 的增加并不会导致全膝关节置换术的医院资源使用增加。
