Sleeve gastrectomy is one of the most commonly performed bariatric surgeries today, offering effective weight loss results for individuals struggling with obesity. Often referred to as vertical sleeve gastrectomy (VSG), this procedure involves removing a portion of the stomach to reduce its size, thereby limiting food intake and promoting satiety.

While the term “sleeve gastrectomy” usually refers to a standardized approach, there are variations of the procedure that can be tailored based on the patient’s specific medical needs, anatomy, and surgical goals. Understanding the types of sleeve gastrectomy helps patients make informed decisions alongside their bariatric surgeons.

What is Sleeve Gastrectomy?

Before diving into the types, it’s important to understand what sleeve gastrectomy entails. In a standard sleeve gastrectomy, approximately 75-80% of the stomach is surgically removed, leaving a narrow, tube like “sleeve” as the new stomach. This significantly restricts food intake and also reduces the production of ghrelin, the hunger hormone, which helps patients feel less hungry.

The procedure is typically performed laparoscopically, meaning through small incisions using a camera and specialized instruments. It’s considered both effective and safe, with fewer complications compared to other types of bariatric surgeries like gastric bypass.

Different Types of Sleeve Gastrectomy

Although the core goal of all sleeve gastrectomy procedures is similar weight loss through stomach reduction variations in technique and anatomical tailoring can impact outcomes. Factors such as severe acid reflux, BMI level, prior abdominal surgeries, or co existing conditions may lead a surgeon to recommend a modified approach.

Each type may offer specific benefits or address certain complications better. Let’s examine the primary types of sleeve gastrectomy that bariatric surgeons use today.

Standard Vertical Sleeve Gastrectomy (VSG) :- This is the most commonly performed version of sleeve gastrectomy. The stomach is reduced in volume by creating a vertical “sleeve” using a surgical stapler. The new stomach typically holds around 100–150 mL of food.

The procedure is highly effective in reducing body weight, improving obesity related conditions like type 2 diabetes, sleep apnea, and hypertension, and has a relatively short recovery time.

The standard sleeve gastrectomy is ideal for patients with mild to moderate obesity and no severe gastrointestinal issues such as chronic GERD (gastroesophageal reflux disease).
Extended Sleeve Gastrectomy :- In an extended sleeve gastrectomy, the procedure follows the standard approach but goes further in reducing the size of the stomach. More of the antrum and fundus (the lower and upper parts of the stomach) are removed, resulting in an even narrower sleeve.

This method may be considered for patients with extremely high BMI or for those needing more dramatic weight loss results. However, it may carry a higher risk of nutrient deficiencies or complications such as strictures due to the more aggressive stomach reduction.
Sleeve Gastrectomy with Duodenojejunal Bypass (SADI-S or SIPS) :- Though technically a combination procedure, sleeve gastrectomy with duodenojejunal bypass includes an initial sleeve gastrectomy followed by bypassing a portion of the small intestine. Known as SADI-S (Single Anastomosis Duodeno-Ileal Bypass with Sleeve Gastrectomy) or SIPS (Stomach Intestinal Pylorus-Sparing Surgery), this approach combines restriction and malabsorption for significant weight loss.

It’s generally reserved for patients with severe obesity (BMI > 50) or those who need enhanced metabolic improvements, especially in cases of uncontrolled diabetes. This type may require lifelong vitamin and mineral supplementation due to reduced nutrient absorption.
Banded Sleeve Gastrectomy :- A banded sleeve gastrectomy involves placing a silicone ring or band around the upper portion of the newly created gastric sleeve. This prevents long-term dilation of the sleeve and offers more sustained weight loss by keeping the stomach’s restrictive nature intact.

This technique is particularly helpful for patients prone to weight regain or for those who’ve had a failed prior sleeve procedure. However, it requires careful monitoring to avoid complications such as band slippage or erosion.
Loop Sleeve Gastrectomy :- Also known as “loop gastroplasty,” this is an experimental or less commonly performed variation that modifies the typical sleeve structure and may involve an additional connection between parts of the stomach or intestines. It aims to achieve similar or enhanced weight loss results with fewer complications.

While still under investigation and not widely adopted, loop sleeve techniques may become more prominent in the future as bariatric surgery continues to evolve.
Revisional Sleeve Gastrectomy :- This type refers to a sleeve gastrectomy performed as a revision of a previous bariatric surgery such as gastric banding, gastric balloon, or even an earlier sleeve that has failed. Revisional procedures may involve correcting complications, re tightening the sleeve, or converting to another form of surgery.

Due to the complexity of working with scar tissue and altered anatomy, revisional sleeve surgeries should be handled by highly experienced bariatric surgeons.

Choosing the Right Type of Sleeve Gastrectomy

Selecting the most appropriate type of sleeve gastrectomy depends on a variety of factors :-

BMI and overall health status
Presence of acid reflux or GERD
Nutritional habits and goals
Previous abdominal surgeries
Surgeon expertise and recommendation

A thorough consultation with a bariatric specialist, complete with diagnostic imaging and lab tests, is crucial to determine the safest and most effective approach.

Conclusion

Sleeve gastrectomy has revolutionized obesity treatment, offering millions of patients a chance at healthier, longer lives. While the standard vertical sleeve remains the most popular, other variations like extended, banded, or combined procedures provide additional options tailored to specific patient needs.