减重手术类型指南

来自妙佑医疗国际员工

减重(肥胖症)手术可帮助您减轻体重,并降低您患上肥胖症相关的医疗问题的风险。减重手术主要通过两种方式减轻体重:

  • 限制。手术利用物理限制胃可以容纳的食物量来限制您能摄入的卡路里量。。
  • 吸收不良。手术缩短或绕过小肠的一部分,从而减少身体吸收的卡路里和营养素的量。

一些常见的减重手术类型是:

  • Roux-en-Y 胃旁路手术
  • 袖状胃切除术

Roux-en-Y 胃旁路术

在 Roux-en-Y 胃旁路术中,医生会在胃上部造一个小胃袋。这个小胃袋是胃部唯一能接受食物的部分。这在很大程度上限制了每次进食量。

然后在主胃下方不远处切开小肠,并将其连接至新建的小胃袋。食物直接从这个胃袋流入该部分肠道。但胃的主体部分会继续分泌消化液。仍与主胃相连的那部分肠道会被重新连接到稍远的部位。这样能让消化液流至小肠。由于食物现在会绕过部分小肠,因此,吸收的营养物质和热量较少。

袖状胃切除术

在袖状胃切除术中,部分胃会被切除并移出身体。胃的其余部分会形成管状结构。这个更小的胃不能容纳太多食物。它还会减少食欲调节激素(胃饥饿素)的分泌,该激素可能会降低您的食欲。但袖状胃切除术不会影响肠道对卡路里和营养物质的吸收。

Roux-en-Y Gastric Bypass

In a Roux-en-Y gastric bypass, the surgeon creates a small pouch at the top of the stomach. The pouch is the only part of the stomach that receives food. This greatly limits the amount that you can comfortably eat and drink at one time.

This new pouch also produces less of the appetite regulating hormones such as ghrelin, which may lessen your desire to eat.

The small intestine is then cut a short distance below the main stomach and connected to the new pouch. Food flows directly from the pouch into this part of the intestine.

The main part of the stomach, however, continues to make digestive juices. The portion of the intestine still attached to the main stomach is reattached farther down. This allows the digestive juices to flow to the small intestine.

Because food now bypasses a portion of the small intestine, fewer nutrients and calories are absorbed.

Sleeve Gastrectomy

In a sleeve gastrectomy, part of the stomach is separated and removed from the body. The remaining section of the stomach is formed into a tubelike structure.

This smaller stomach cannot hold as much food. It also produces less of the appetite regulating hormones such as ghrelin, which may lessen your desire to eat.

However, the sleeve gastrectomy does not change the anatomy of the intestines or affect the absorption of calories and nutrients.

Jan. 19, 2024 了解更多深度信息