By Elias F. Darido, MD, FACS
Weight Loss and Bariatric Surgeon | Houston Weight Loss Surgery Center
20+ Years in Practice | 1,000+ Sleeve Gastrectomy Procedures | 1,000+ Hiatal Hernia and Anti-Reflux Procedures

Sasha from Kingwood, North Houston, sent us this question:

“I had a bariatric sleeve/hiatal hernia repair in October 2015. I lost 100 lbs. I had severe acid reflux before surgery. It was gone completely after surgery. I had some regain last year but lost 50 lbs. However, my reflux has returned. Medications and a change in eating habits have had no effect. I’m having surgery in May. Drs tell me that 65% of these repairs fail. My question is why did it fail after I lost the weight? It does not make sense. Thank you.”

Dear Sasha,

Your case follows a pattern I see often, and the timeline actually makes a lot of sense once you understand what’s happening mechanically. Let me walk through it.

Why Hiatal Hernia Repairs Recur

A properly performed hiatal hernia repair, combined with sleeve gastrectomy, is associated with a high rate of acid reflux resolution and a low rate of failure or recurrence. In my own practice, that failure rate is under 1%. The 65% figure you were quoted is far higher than what a properly performed repair should produce. It likely reflects outcomes from less experienced hands, or cases involving larger hernias or prior failed repairs, rather than a general expectation for this surgery.

The reason for that gap comes down to technique. “Properly performed” is doing a lot of work in that sentence. Hiatal hernia repair is technically demanding, especially in an obese patient with an enlarged liver obstructing the surgical view. Incomplete esophageal mobilization during the repair invariably leads to hernia recurrence down the line.

How a Narrowed Sleeve Contributes to Reflux

There’s a second, separate mechanism that can drive both reflux and hernia recurrence: a narrowed gastric sleeve. The area of concern is the incisura angularis, a notch where the stomach turns from its vertical portion into its horizontal portion, on its way toward the outlet into the small intestine. If the sleeve lumen is narrowed at that junction, food and liquid can still pass through, but the narrowing creates back-up pressure behind it. That back-up pressure is what favors reflux of gastric contents up into the esophagus. 

Why Symptoms Can Take Years to Show Up

This is the part that explains your timeline. Early on, especially if the hiatal hernia was properly repaired, reflux from a narrowed sleeve tends to be minimal. This is exactly why you had no symptoms in the early post-operative period. But over time, that low-grade, constant acid reflux gradually forces the esophagus to retract upward into the chest, which is how a hiatal hernia develops or redevelops. From there, the hernia and the reflux feed each other: the hernia makes the reflux worse, and the reflux further pulls the esophagus into the chest, worsening the hernia. That’s the point where patients like you start noticing symptoms, and why they tend to get worse with time rather than better.

Weight regain isn’t the direct cause of your reflux returning. It’s more likely that the underlying mechanical process (narrowing, then reflux, then hernia) had already been developing quietly in the background, and became noticeable around the same time your weight changed.

What Fixes It

Here’s some genuinely good news in your situation: gastric sleeve narrowing tends to resolve on its own over time, as the stomach naturally dilates in that area. So in most cases, a redo hiatal hernia repair alone is an effective and durable solution to stop the reflux and resolve symptoms. You’re addressing the hernia without needing to redo the sleeve itself.

If narrowing were still present (unlikely) at the time of your redo surgery, converting the sleeve to a gastric bypass would be the more reliable way to stop the reflux for good. Based on what you’ve described, that’s unlikely to be necessary in your case, but it’s something your surgeon should evaluate directly before your surgery.

Key Clinical Points

• Reflux after sleeve gastrectomy with hiatal hernia repair is most often driven by two separate mechanisms: incomplete esophageal mobilization during the original repair, and back-up pressure from narrowing at the incisura angularis
• At Houston Weight Loss Surgery Center, the hiatal hernia repair failure rate is under 1%. This is far below the 65% figure sometimes quoted to patients, which likely reflects less experienced technique or more complex cases rather than a general expectation
• Reflux from a narrowed sleeve is often silent for months or years before hiatal hernia recurrence causes symptoms to appear
• Hiatal hernia and reflux reinforce each other once the cycle starts; each one worsens the other over time
• Gastric sleeve narrowing typically resolves on its own as the stomach dilates, so redo hiatal hernia repair alone is usually sufficient
• Conversion to gastric bypass is reserved for cases where sleeve narrowing is still present at the time of revision

If your reflux has returned after sleeve gastrectomy and isn’t responding to medication or dietary changes, I’d encourage you to get a thorough evaluation before your revision surgery. Understanding exactly which mechanism is driving your reflux changes what the right fix looks like. 

Elias F. Darido, MD, FACS
Houston Weight Loss Surgery Center