A Lap-Band to sleeve conversion removes the band and turns the stomach into a narrow sleeve, either in the same operation or in a second one later. It is one of the two usual conversions for a failing band; the other is gastric bypass. In Rancho Cucamonga, it begins with a consultation and tests to decide whether a sleeve, a bypass, or another path suits you.
What the conversion involves
First the band, tubing, and port are taken out. Then the surgeon performs a sleeve gastrectomy. According to the ASMBS, a sleeve removes about 80 percent of the stomach, leaving a tube about the size and shape of a banana. It holds less food and removes the part of the stomach that makes most of the "hunger hormone." The NIDDK describes the remaining stomach as a banana-shaped section closed with staples.
The two procedures work differently. A band restricts food with an adjustable ring and needs regular fills. A sleeve has no device, no port, and no fills. The ASMBS lists the sleeve as non-reversible. Our page on gastric sleeve surgery in Rancho Cucamonga covers the sleeve itself, including recovery.
Who a sleeve conversion may suit
People usually consider conversion because of weight regain, too little weight loss, or band problems such as slippage, erosion, or pouch enlargement. For many, the question is whether a sleeve or a bypass is the better second operation. A few points from the literature help frame it:
- A 2017 meta-analysis in Obesity Surgery pooled 36 studies of 2,617 patients converted from a band to a bypass or a sleeve. It found no difference between the two in complications, leaks, or return to the operating room, and no statistical difference in excess weight loss at any time point measured.
- A 2019 meta-analysis of six studies likewise found no significant difference in weight loss at 12 months between sleeve and bypass after a failed band, and its authors said longer follow-up is still needed.
- Reflux matters. The ASMBS notes that a sleeve may worsen reflux or cause new heartburn. If you already have significant reflux, a bypass is often discussed instead.
Our comparison of band to sleeve versus band to bypass goes through these trade-offs in more depth.
One operation or two
A sleeve can be done at the same time the band is removed (one stage) or in a separate, later operation (two stage). A 2020 meta-analysis in Surgery for Obesity and Related Diseases found no significant difference in the overall leak rate between the two approaches. For conversion to sleeve specifically, its subgroup analysis suggested a possible advantage for two stages, though that difference was not statistically significant. Your surgeon weighs the condition of the stomach, the reason for removal, and your health. Our guide to one-stage versus two-stage conversion explains the reasoning.
The evaluation before conversion
Expect your surgeon to review your weight history, the reasons the band is failing, your reflux and swallowing symptoms, and your medical conditions. Tests often include an upper GI x-ray and an upper endoscopy. One finding to know about: in a 2019 study from Israel, an upper GI x-ray before surgery detected a hiatal hernia (part of the stomach pushed up through the diaphragm) in 9.1 percent of band patients being converted, but surgeons found one during the operation in 20.3 percent. The authors recommend checking the hiatus during every conversion.
Before a new operation, surgeons also look at current candidacy guidelines. The 2022 ASMBS and IFSO guidelines recommend metabolic and bariatric surgery for people with a BMI of 35 or more, and say it should be considered at a BMI of 30 to 34.9 with metabolic disease. Insurers may apply their own rules to conversions.
Recovery and follow-up after a sleeve
Eating after a sleeve follows stages. The NIDDK says patients usually start on a liquid diet, move to soft foods over several weeks, and then gradually return to solid food, eating small meals and chewing well. Lifelong vitamin and mineral supplements prescribed by your care team are part of life after any bariatric operation. There are no more fills, but follow-up visits continue, both to track weight and nutrition and to watch for reflux. The office will give you the specific diet stages and visit schedule it uses.
Frequently asked questions
Is a sleeve after a band riskier than a first-time sleeve?
Generally, yes, somewhat. The ASMBS Revision Task Force review of reoperative surgery found complication rates are usually higher after a second operation than after a first one. The 2017 meta-analysis reported an overall complication rate of 13.2 percent across band conversions. Your surgeon will explain your personal risk.
Will I lose as much weight as someone having a first sleeve?
The 2017 meta-analysis concluded that outcomes after band conversion appear generally similar to those after primary surgery. Across all conversions, pooled excess weight loss was 44.5 percent at 6 months, 55.7 percent at 12 months, and 59.7 percent at 24 months. These are averages from observational studies, not a prediction for any one person.
Can a sleeve be reversed if I do not like it?
No. The ASMBS describes the sleeve as a non-reversible procedure because most of the stomach is removed. A sleeve can later be revised, for example to a bypass, for problems such as severe reflux or weight regain, but it cannot be undone. This is a key difference from the band and worth thinking through before you decide.
Will my insurance cover a conversion from band to sleeve?
Coverage depends on your plan, the reason for conversion, and your records. Each insurer sets its own criteria for revision surgery and decides from the records your surgeon sends. The practice works with PPO and HMO plans that allow care with Dr. Davtyan. The office will check your insurance and lay out the next steps. Our guide to insurance for band removal and revision explains how insurers decide.
Talk with Dr. Davtyan in Rancho Cucamonga
Dr. David G. Davtyan, MD, FACS, FICS, FASMBS, is a bariatric surgeon who performs gastric sleeve, gastric bypass and revision surgery, and he has a Lap-Band himself. The first consultation is complimentary. Call 909-355-2525 or 877-9-BE-SLIM (877-923-7546), visit 8330 Red Oak Street, Suite 201, Rancho Cucamonga, CA 91730, or use the contact page; more is in the Rancho Cucamonga Lap-Band guide.
Sources
More in the Lap-Band in Rancho Cucamonga guide
Start at the Lap-Band in Rancho Cucamonga page, or go straight to a topic.
Understanding your band
Weighing your options
Getting care in Rancho Cucamonga
