What Is Gastric Balloon Surgery and How Does It Work?

An intragastric balloon procedure offers a temporary, non-surgical method for weight management. This system involves placing an inflatable device inside the stomach to occupy space, helping patients feel full more quickly with smaller amounts of food. The process is minimally invasive, utilizing an endoscopy or a swallowable capsule, avoiding the incisions and longer recovery times associated with traditional weight loss surgery. The balloon is removed after a pre-determined period, usually ranging from four to twelve months.

Defining the Gastric Balloon Procedure

The fundamental mechanism of the gastric balloon centers on its role as a space-occupying device within the stomach cavity, which typically holds about 1200 milliliters. Once inflated to a volume of 400 to 750 milliliters, the balloon physically reduces the stomach’s capacity, creating a sensation of early fullness with less food intake. This restriction encourages patients to consume smaller portions, leading to a substantial decrease in daily caloric intake. The presence of the balloon also contributes to a delayed gastric emptying process, meaning food stays in the stomach longer. This slower movement reinforces the feeling of fullness and helps manage hunger pangs.

The Process of Placement and Removal

The placement of a gastric balloon is typically an outpatient procedure that does not require general anesthesia. For endoscopically placed balloons, the patient receives mild sedation while a gastroenterologist uses an endoscope (a flexible tube with a camera) to guide the deflated balloon into the stomach. Once positioned, the balloon is inflated with a sterile solution, often saline mixed with a blue dye to detect a leak. The entire placement procedure usually takes about 20 to 30 minutes, followed by monitoring before the patient is released to go home.

The device must be removed after its designated duration, generally between six and twelve months. The removal process is similar to insertion and also requires endoscopy and mild sedation. The physician first punctures the balloon to deflate it completely, then uses the endoscope to withdraw the device through the mouth. A notable exception is the swallowable balloon, which automatically deflates and passes naturally through the digestive tract after about four months, eliminating the need for a second endoscopic procedure.

Determining Patient Eligibility

The gastric balloon procedure is intended for individuals who have struggled to achieve weight loss through diet and exercise but may not qualify for or desire permanent bariatric surgery. A primary criterion for eligibility is a Body Mass Index (BMI) typically between 30 and 40, though some programs consider patients with a BMI as low as 27. Candidates must demonstrate a commitment to long-term lifestyle and behavioral changes, as the device is only a temporary tool. Certain medical conditions prevent eligibility, including a history of previous stomach or esophageal surgery. Contraindications also include inflammatory bowel disease, large hiatal hernias, or chronic use of medications that increase the risk of stomach ulcers.

Adapting to Life with the Balloon

Immediately following placement, patients commonly experience an adjustment period as the stomach reacts to the foreign object. Initial side effects are nausea, vomiting, and abdominal discomfort, typically lasting the first few days to a week. Healthcare providers manage these symptoms by prescribing anti-nausea medications and proton pump inhibitors to reduce stomach acid and prevent reflux. Patients are instructed to stay well-hydrated and sip clear fluids frequently, as drinking too quickly can worsen the discomfort.

The long-term success of the balloon hinges on a structured progression through dietary stages, starting with liquids and gradually advancing to pureed and then solid foods over several weeks. Patients must adopt new eating habits, such as consuming very small portions, chewing food thoroughly, and eating slowly to prevent pain or vomiting. Long-term dietary adjustments focus on high-protein foods to maintain muscle mass and avoiding carbonated beverages, which cause discomfort due to gas buildup. Consistent follow-up with a multidisciplinary team, including dietitians and behavioral therapists, is required to reinforce these changes and maximize weight loss achieved during the balloon’s temporary placement.