Laparoscopic Gastric Bypass Surgery
Laparoscopic Roux-en-Y Gastric Bypass
Laparoscopic gastric bypass surgery, commonly referred to as "gastric bypass" surgery, involves several steps:
With gastric bypass surgery, first the size of the stomach is reduced by dividing it with gastric staples, thus creating a small stomach or gastric pouch (called a “gastrojejunostomy”) at the upper part of the stomach.
Next, the small intestine is divided into two segments – the Roux limb and the biliopancreatic limb.
Next, the Roux limb is brought up and connected to the new pouch so the new pouch can empty food contents into the bowel.
The result of the altered digestive tract is that the lower stomach and a portion of the small intestine are bypassed.
“Roux-en-Y” is named for the bariatric surgeon who first described this digestive limb, Cesar Roux, and refers to the Y-shaped appearance of the altered small intestine after the bypass is performed.
Benefits of laparoscopic gastric bypass surgery:
- Since this is a minimally invasive procedure, there is decreased post-surgery pain, faster recovery time and less time off work (compared to an open procedure).
- Often described as the “gold standard” for weight loss surgery in the United States, the gastric bypass is the most frequently performed bariatric surgery in this country.
- At two years, the average weight loss is 60-70 percent of excess weight.
- Hypertension and diabetes are clinically reversed or improved in over 80 percent of patients.
There is almost no risk of incisional hernias after the operation; whereas as much as 20 percent of open operations may result in this problem.
In 1-3 percent of cases, leaks can occur from the gastrojejunostomy and from where
the intestines are reconnected.
- A physical reaction known as "dumping" can occur . It is a condition in which food is “dumped” from the stomach into the intestines too quickly, before it’s been properly digested. It occurs with foods high in fat and sugar. Although uncomfortable, this can serve to help modify eating behavior.
- Vitamin and iron deficiencies can occur.
Without proper diet and exercise, 10 to 30 percent of the weight
lost can be regained after 12 to 18 months.