Department of Surgery and Anatomy, University Hospital, Faculty of Medicine of Ribeirão Preto, University of São Paulo, R Antônio Chiericato, 760, Ribeirão Preto, São Paulo, 14096 510, Brazil.
Obes Surg. 2012 Apr;22(4):519-22. doi: 10.1007/s11695-011-0480-4.
There is a controversy about the best way to report results after bariatric surgery. Several indices have been proposed over the years such as percentage of total weight loss (%TWL), percentage of excess weight loss (%EWL), and percentage of excess body mass index loss (%EBMIL). More recently, it has been suggested to individualize the body mass index (BMI) goal to be achieved by the patients (predicted BMI-PBMI). The objective was to assess the reproducibility of this PBMI in our service.
In this retrospective study, we assessed the %TWL, %EWL, %EBMIL (with expected BMI of 25 kg/m2), and %EBMIL (with PBMI) over 4 years of observation in two groups of patients: BMI <50 kg/m2 and BMI ≥50 kg/m2.
The medical records of 403 patients were studied. From 18 to 42 months after surgery, %TWL was higher in the superobese group, whereas %EWL was similar for the two groups. %EBMIL was higher in less obese patients up to 24 months and similar thereafter. In contrast, %EBMIL with PBMI was greater in the superobese group, although it never reached the 100% goal.
We conclude that %EBMIL results according to PBMI were not reproducible in our institution. There is a need to elaborate a new easy-to-obtain and reproducible index.
关于减重手术后结果的最佳报告方式存在争议。多年来已经提出了几种指标，例如总体重减轻百分比（%TWL）、超重减轻百分比（%EWL）和多余体重指数减轻百分比（%EBMIL）。最近，有人建议根据患者的情况个性化设定要达到的体重指数（BMI）目标（预测 BMI-PBMI）。目的是评估我们服务中这种 PBMI 的可重复性。
在这项回顾性研究中，我们评估了两组患者在 4 年观察期内的 %TWL、%EWL、%EBMIL（预计 BMI 为 25 kg/m2）和%EBMIL（采用 PBMI）：BMI <50 kg/m2 和 BMI ≥50 kg/m2。
研究了 403 名患者的病历。手术后 18 至 42 个月，超肥胖组的%TWL 较高，而两组的%EWL 相似。在肥胖程度较低的患者中，%EBMIL 在前 24 个月较高，此后相似。相比之下，超肥胖组的 PBMI 对应的%EBMIL 较高，尽管从未达到 100%的目标。
我们得出结论，我们机构的 PBMI 对应的%EBMIL 结果不可重复。需要制定一个新的易于获得和可重复的指标。
