St. George Obesity & General Surgery

Laparoscopic Sleeve Gastrectomy

This is a relatively new approach. It is the first component of the duodenal switch operation and involves removing the lateral 2/3rds of the stomach with a stapling device. It can be done laparoscopically (keyhole surgery) but is not reversible. It basically leaves a stomach tube instead of a stomach sack.

What is Gastric Sleeve Surgery?

Sleeve gastrectomy, also known simply as gastric sleeve surgery, is a surgical weight-loss procedure in which a significant portion of the stomach is removed, leaving behind a smaller, sleeve-shaped stomach. 

Typically, about 70-80% of the stomach is removed, including the part that produces the hunger hormone ghrelin. This results in a smaller stomach that restricts the amount of food that can be eaten, leading to weight loss.


Am I ELIGIBLE for Gastric Sleeve Surgery?

  • If you have a body mass index (BMI) greater than 35
  • Or if your BMI is greater than 30 if you experience a weight-related illness
  • And if you have tried other methods of weight loss, such as dieting, without long-term success.

Why is Gastric Sleeve Surgery So Effective?

  • After gastric sleeve, the amount of food you could eat at one sitting will be reduced. Typically your “new” stomach will only be able to hold 200-300mls of volume when compared to a previous volume of 1500mls.
  • After sleeve surgery, you should also feel less hungry as the major part of the stomach that produces the hunger hormone ghrelin, has been removed.
  • Sleeve surgery can initiate changes to your metabolism, gut bacteria, hormones and digestion contributing to your ability to lose weight

How Gastric Sleeve can Benefit You?

On average, patients after sleeve lose about 70% of their excess weight within the “golden time period of 12-18 months”

You should also experience resolution or significant improvement to weight related medical conditions like diabetes, sleep apnoea, high blood pressure, cholesterol levels just to name a few.

Sleeve surgery can give you the massive “kick start” that you need in gaining back control over your diet. Making healthy food choices and prioritizing protein becomes a necessity as the amount of food you can eat at one sitting is reduced. Losing significant amount of weight will also help ease the pressure on your joints, which will help motivate you in exercising more.

How do we perform gastric sleeve surgery

Here at St George Obesity Surgery, all bariatric operations are performed through key hole surgery (laparoscopic or robotic) under general aneasthesia.

To perform the operation, Dr Cheng will usually make 4-5 small incisions in the abdomen. These incisions are typically less than an 1cm in length. Dr Cheng will carefully staple off and removes a large portion of the stomach, typically around 70-80% of its original size. The remaining portion of the stomach is shaped like a sleeve or tube, hence the name “sleeve gastrectomy.” The extra part of the stomach is removed from the abdominal space through one of the ports. All of the incisions will then be sutured close using a dissolvable suture and covered with an invisible glue dressing.

Sleeve gastrectomy is generally a very safe and effective weight loss procedure for individuals who have been unable to lose weight through diet and exercise alone. However, like any surgical procedure, it carries risks and potential complications. It is essential for patients to thoroughly discuss the benefits and risks with Dr Cheng before deciding to undergo surgery.

Below is a video detailing how the surgery is done in a more visual sense