Gastric bypass stricture is a narrowing of the gastrojejunostomy (the connection between the gastric pouch and the Roux limb) that can develop after Roux‑en‑Y gastric bypass, causing dysphagia, vomiting, food intolerance, reflux, or inability to advance diet. Management includes endoscopic balloon dilation, endoscopic stenting, or surgical revision depending on severity and response to treatment.

For mild or moderate strictures, endoscopic balloon dilation is performed under sedation. A balloon is passed through the gastrojejunostomy and inflated to widen the narrowing. For refractory strictures, surgical options include revisional anastomosis, pouch revision, or conversion to a different metabolic procedure. The approach is tailored to stricture severity and prior treatment response.

Benefits include resolution of dysphagia, improved food tolerance, reduced vomiting, improved reflux control, and restoration of normal food passage through the bypass. Patients typically experience rapid symptom improvement after successful dilation or surgical revision.

Candidates include patients with dysphagia, vomiting, food intolerance, reflux, inability to advance diet, or obstructive symptoms after gastric bypass. Endoscopy typically confirms the stricture location and severity.

Endoscopic dilation is performed under sedation. A balloon catheter is advanced through the stricture and inflated. Multiple dilations may be required. Surgical revision is performed laparoscopically and may include anastomotic revision, pouch revision, or conversion to a different procedure.

Risks include perforation, bleeding, recurrent stricture, marginal ulcer, and, for surgical revision, leak and nutritional deficiencies.

After endoscopic dilation: same‑day discharge, liquid diet for 24–48 hours, gradual advancement. After surgical revision: Days 1–3 liquids, Week 1–2 soft foods, gradual return to normal routines by 30 days.

Most patients experience complete or near‑complete resolution of obstructive symptoms. Recurrent strictures may require repeat dilation or surgical conversion.

Dr. Nestor de la Cruz‑Muñoz is a nationally recognized bariatric and metabolic surgeon with extensive experience diagnosing and treating bypass strictures through both endoscopic and surgical approaches.

Weight loss is not the primary goal. Most patients maintain or modestly improve weight after stricture management.

Stricture management improves food tolerance and nutritional status but has minimal direct metabolic impact unless combined with a metabolic conversion.

Protein‑forward nutrition, resistance training, and consistent metabolic follow‑up are essential after stricture management.

Bypass strictures can worsen reflux. Hiatal hernia repair is performed when needed.

If endoscopic dilation fails, surgical options include anastomotic revision, pouch revision, or conversion to SADI‑S, DS, or OAGB for definitive symptom relief.

Restoring food tolerance allows resumption of adequate protein and resistance training to protect lean mass.

Most insurers cover stricture management when symptoms are documented with endoscopy. Surgical revision coverage varies by plan and medical necessity documentation.

Pre‑op requirements may include bloodwork, imaging, endoscopy, and medication adjustments.

Diet progresses from liquids to soft foods based on symptom resolution. Protein and hydration goals are prioritized.

Light activity resumes immediately. Resistance training resumes once nutritional status stabilizes.

Miami is a major hub for patients from Latin America and the Caribbean. Our team supports travel coordination and virtual follow‑up.