Home/Procedures/Revision & Conversion
Revision and conversion surgery
A previous operation that stopped working, an old gastric band causing problems, or reflux after a sleeve. Reoperative bariatric surgery is technically demanding, and it is a substantial part of this practice.
Why patients come back
Bariatric surgery has been performed at high volume in the United States for more than two decades. A large number of people are now living with an operation that was appropriate when it was done and is no longer serving them. There is nothing unusual about needing a second operation, and there is nothing to be embarrassed about in asking.
The common reasons
- An adjustable gastric band. Bands were performed in enormous numbers in the 2000s and have since largely fallen out of use. Slippage, erosion, port problems, esophageal dilation, intolerable reflux, and simple loss of effectiveness are all routine. Dr. Geller placed more than 1,500 bands and has removed a great many of them. Why the band fell out of favor, and what to do if you have one →
- Reflux after a sleeve gastrectomy. The most common reason for conversion today. When medication no longer controls it, conversion to a gastric bypass is usually the definitive answer.
- Weight regain or inadequate weight loss. Worth investigating carefully before operating — regain has many causes, and not all of them are anatomic. Weight loss medication now resolves a great many of these cases without a second operation, and it is usually the right thing to try first. More on medical weight loss →
- Complications of an earlier operation, such as stricture, chronic marginal ulcer, or a dilated pouch.
- Return of type 2 diabetes after an operation that initially controlled it.
What revision surgery involves
There is no standard revision operation. What can be done depends on what was done before, what the current anatomy looks like, and what problem you are trying to solve. Common paths include:
- Band removal alone, when the band is the problem and no further operation is wanted
- Band removal with conversion to a sleeve or bypass, in one stage or two
- Sleeve to gastric bypass, for reflux, for weight regain, or both
- Sleeve to SADI-S, adding a duodenal switch to an existing sleeve for patients who lost too little — more on SADI-S
- Revision of an existing bypass, addressing pouch or connection size
- Repair of a hiatal hernia alongside any of the above
If you are considering a conversion, it helps to see the anatomy you would be converting to: the gastric bypass animation and the sleeve gastrectomy animation both run about twenty seconds. If you have a band, the band animation shows what is currently in place.
Nearly all of this work begins with an evaluation of your current anatomy — typically endoscopy, imaging, or both — before any operative plan is made. Records from your original surgery are helpful when they can be obtained, but their absence is not an obstacle.
Why experience matters more here than anywhere else. Reoperative bariatric surgery means working through scar tissue, in altered anatomy, where tissue planes are not where the textbook puts them. Complication rates for revisions are higher than for first-time operations across every published series. This is the setting where a surgeon's case volume stops being a marketing statistic and starts being the thing that determines your outcome.
Setting expectations honestly
Two things are worth saying plainly.
Revisions generally produce less weight loss than first-time operations. A conversion from sleeve to bypass, for example, typically yields more modest additional loss than a primary bypass would have. When the goal is relief from reflux or a band complication, this matters less. When the goal is weight loss alone, it should shape what you expect.
Insurance approval is often harder. Coverage for revision surgery varies widely, and plans frequently distinguish between revision for a complication and revision for weight regain. The documentation requirements are heavier. We will tell you what we are up against before you invest months in the process.
If you had surgery somewhere else
That is fine and it is common. Many revision patients had their original operation at another program, in another city, or with a surgeon who has retired or closed practice. You do not need a referral from your original surgeon, and you do not need to have your old records in hand to make an appointment.
Second opinions welcome.
If a previous operation is not working, an hour with an experienced revision surgeon is worth having before you decide anything.