Bariatric surgery or the weight loss surgery is an option for the people who have severe obesity and who have not been able to lose weight using other methods. The surgery involves making the stomach smaller or sometimes, changes in the small intestine.
The best weight loss surgeon in Delhi says, bariatric surgeries contribute to weight loss mainly by,
• Restriction: surgery is done to reduce the size of the stomach, which limits the calorie intake.
• Malabsorption: a surgery is done to shorten or bypass the small intestine, which leads to reduction in the number of calories and nutrients to be absorbed
There are four most commonly used bariatric surgeries:
Roux-en-Y Gastric Bypass or Gastric Bypass
This surgery involves creating a pouch at the top of the stomach. This pouch is a part of the stomach which receives food. This process lessens the quantity of food you can comfortably eat and drink at one time.
The small intestine is then cut and attached to the new pouch. The food then directly flows into this part of the intestine. The remaining part of the stomach continues to produce digestive juice which flows down to the remaining part of the small intestine which is reattached to the main stomach.
The food bypasses a portion of the small intestine, this lessens the nutrients absorption.
Laparoscopic Adjustable Gastric Band
Laparoscopic adjustable gastric band procedure involves placing a fixed band with an inflatable balloon at the upper part of the stomach. This leads to a small pouch of the stomach which has a very narrow opening to the rest of the stomach.
A port is then placed under the abdomen skin which is connected by the band with a tube. The balloon can be inflated or deflated by injecting or removing the fluid through the port, to adjust the size of the band.
Just like gastric bypass, gastric banding restricts the amount of food but does not reduce the nutrient absorption.
In sleeve gastrectomy, a part of stomach producing the hunger hormone, ghrelin, is permanently removed. The stomach is formed into a tube or a sleeve-like structure, which holds less food. The procedure also lessens the appetite due to limited ghrelin production.
Sleeve gastrectomy procedure does not affect the absorption of nutrient in the intestine and is mostly chosen surgery option by the best bariatric surgeon in India.
Duodenal Switch or Biliopancreatic Diversion
Duodenal switch is a complex surgery than the others, as it involves two separate surgeries. The first is similar to gastric sleeve surgery. Second surgery involves a bypass of the large portion of the small intestine (duodenum). Basically, the first part of the small intestine is connected to the last portion of the small intestine. This lessens the food quantity, keeping the enzymes stimulated for an efficient nutrient breakdown.
This surgery leads to more weight loss as compared to the other three surgeries. Due to the surgical complications and the shortage of nutrients, it is less performed.
Who can Undergo Bariatric Surgery?
In spite of the appealing results given by the bariatric surgeries, not every obese person can obtain a medical approval for it says a best bariatric surgeon in India. There are certain stipulation and guidelines that are followed. Few are listed below.
• The body mass index should be more than 40
• BMI of 35 or above along with weight-related condition such as type2 diabetes, high blood pressure or a fatty liver disease
• Inability to achieve weight loss, with prior efforts
• Committed to a lifestyle change after the surgery
• Awareness about the risks and benefits of the surgery