胃转流手术：将胃的底部去除，以此来缩小胃体积。

Biliopancreatic diversion: The bottom part of your stomach is removed so your stomach is smaller.

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我们已经看到胃转流术是非常有效，病人越早做手术效果越好。

We have seen that gastric bypass is very effective and the sooner the operation is performed on the patient the better.

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试验结论：手术前体重减轻与胃转流术后并发症发生率降低相关。

CONCLUSION: Preoperative weight loss is associated with fewer complications after gastric bypass surgery.

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