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Sleeve-fundoplication without gastric resection reduces GERD incidence versus sleeve gastrectomy in obese rat modelNew stomach surgery stops acid burn while you lose weight

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Key Takeaway
Note: Animal study shows novel sleeve-fundoplication may reduce GERD vs sleeve gastrectomy; human data needed.

This preclinical randomized controlled trial evaluated a novel bariatric procedure in 24 male Sprague-Dawley obese rats. Animals were randomized to either sleeve-fundoplication without gastric resection (SG-F) or standard sleeve gastrectomy (SG), with 6-week follow-up. The primary outcome was body weight trajectory, with postoperative GERD incidence as a key secondary outcome.

SG-F demonstrated significantly lower postoperative GERD incidence (0% [0/12]) compared to SG (41.7% [5/12]), with a relative risk of 0.1 (95% CI: 0.01–0.79, P < 0.05). At 4 weeks postoperatively, body weight was significantly lower in the SG-F group (473.4 ± 18.5 g) versus SG (513.6 ± 21.3 g), with a mean difference of -40.2 g (95% CI: -65.1 to -15.3 g, P < 0.05). Overall 6-week weight loss effect was comparable between groups (P = 0.307), though exact numbers were not reported.

Safety assessment found no statistically significant differences in postoperative mortality or bleeding rates between groups. Adverse events, serious adverse events, and discontinuations were not reported. Key limitations include the preclinical animal model, small sample size (n=24), and short 6-week follow-up period. Funding and conflicts of interest were not reported.

This animal study suggests SG-F may reduce GERD risk while maintaining weight loss efficacy compared to SG. The procedure represents a potential alternative avoiding gastric tissue excision. However, this is preclinical evidence only; human efficacy, long-term outcomes, and comprehensive safety remain unknown.

Imagine waking up with a burning chest every morning. You try diet and exercise, but the pain returns. Now, imagine a surgery that helps you lose weight without making that burning worse.

Millions of people struggle with obesity and acid reflux at the same time. Standard weight loss surgery often makes the reflux worse. Doctors usually have to choose between fixing the weight problem or the burning problem.

This new approach tries to do both. It offers a way to lose weight while protecting the esophagus from acid.

The surprising shift

For years, the standard surgery involved removing part of the stomach. This shrinks the stomach to make you feel full faster. However, cutting into the stomach can sometimes let acid flow back up.

But here's the twist. A new technique keeps the stomach mostly intact. It adds a small wrap around the top of the stomach. This acts like a doorstop to keep acid down.

Think of your stomach like a balloon. The standard surgery cuts a slice out of the balloon to make it smaller. The new method does not cut the balloon. Instead, it sews a little flap over the opening.

This flap acts like a one-way valve. It lets food go down but stops acid from coming back up. It is like putting a lid on a pot to keep the steam inside.

Scientists tested this idea on rats. They divided twenty-four rats into two groups. One group got the standard surgery. The other group got the new wrap technique.

They watched the rats for six weeks. They checked how much weight they lost and if they had acid reflux. They also looked for complications like bleeding or death.

The rats that got the new surgery lost weight just as well as the others. By week four, the new group was already lighter. By week six, both groups had similar results.

The big win was for acid reflux. None of the rats with the new surgery had reflux problems. In the standard group, over forty percent had reflux issues.

This doesn't mean this treatment is available yet.

This is not a new diet pill you can buy online. It is a surgical technique still being studied in animals. Humans are not ready for this surgery yet.

If you have acid reflux and want weight loss surgery, talk to your doctor. They can explain the risks of standard surgery. They can also discuss other options that might help your specific situation.

Researchers will need to test this in humans before it becomes common. They will look for safety in people first. Then, they will see if it works as well as in rats.

This research gives doctors a new tool to consider. It might change how they help patients with both weight and reflux issues. The goal is better care for everyone.

Study Details

Study typeRct
EvidenceLevel 2
PublishedApr 2026
View Original Abstract ↓
Sleeve gastrectomy (SG) is a first-line bariatric procedure but may exacerbate gastroesophageal reflux disease (GERD) symptoms in obese patients. To mitigate this critical limitation, we developed a novel sleeve-fundoplication without gastric resection (SG-F) and investigated its efficacy and safety in a rat model of diet-induced obesity. A randomized controlled trial was conducted in twenty-four 8-week-old male SD obese rats, randomly assigned to the SG group (n = 12) or the SG-F group (n = 12). Postoperative complications (mortality, bleeding, GERD) and body weight changes were monitored for 6 weeks. The primary endpoint was the 6-week body weight change trajectory, and the secondary endpoint was postoperative GERD incidence. No statistically significant differences were observed in postoperative mortality or bleeding rates between the two groups. The incidence of postoperative GERD was significantly lower in the SG-F group than in the SG group (0% vs. 41.7%; P < 0.05; RR: 0.1, 95% CI: 0.01–0.79). A significant between-group difference in body weight was noted at 4 weeks postoperatively (SG-F: 473.4 ± 18.5 g vs. SG: 513.6 ± 21.3 g; P < 0.05; MD: −40.2 g, 95% CI: −65.1 to −15.3 g), while the overall 6-week weight loss effect was comparable between the two procedures (P = 0.307). SG-F achieves weight loss efficacy comparable to conventional SG without gastric resection, while suggesting improved anti-reflux protection and maintaining similar safety profiles in terms of mortality and bleeding. This novel procedure represents a promising alternative bariatric option for obese patients with GERD, avoiding the need for gastric tissue excision.
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