In a 28-year-old patient with an upper esophageal fistula, dilated esophagus, prepyloric hyperemia, recurrent pneumonia, and a failed fundoplication, is endoscopic clipping (including over‑the‑scope clips) versus Helix tacking an effective treatment option?

Endoscopic Management of Upper Esophageal Fistula: Clipping vs Helix Tacking

For this 28-year-old patient with an upper esophageal fistula and failed fundoplication, over-the-scope clips (OTSC) should be the primary endoscopic approach, with helical tacking reserved as an adjunctive technique when standard OTSC alone fails or when approximating fibrotic fistula edges before definitive closure.

Primary Recommendation: OTSC as First-Line

The AGA guideline 1 establishes that OTSCs are effective for closing perforations and fistulas 1-2 cm in size with an 85.3% clinical success rate (399/468 cases). For esophageal fistulas specifically, the guideline states that TTSC or endosuturing alone is usually not effective, but OTSC provides superior tissue grasping and closure capability 1.

Key Technical Considerations:

• Timing matters critically: OTSC failure rates increase significantly when closure is attempted >72 hours after perforation 1
• Size limitations: Defects larger than 2 cm have higher failure rates with OTSC alone 1
• Upper esophageal location: The OTSC device increases endoscope tip diameter to 16.5-21 mm, requiring gentle introduction through the hypopharynx, especially relevant in this upper esophageal location 1

When to Add Helical Tacking

Recent 2026 evidence demonstrates that helical tacking serves as an effective adjunctive technique when combined with OTSC for complex fistulas 2. In a bronchoesophageal fistula case, the helical tacking system was deployed in a Z-shape to approximate fibrotic fistula edges first, followed by anchor-pronged clip placement for definitive closure, achieving successful resolution at 10-month follow-up 2.

Helical Tacking Role:

• Edge approximation: Use when fistula edges are fibrotic or separated, making direct OTSC closure difficult 2
• Tension relief: Deploy in Z-shape pattern to bring tissue together before final clip placement 2
• Sequential approach: Tacking first, then OTSC for definitive closure 2

Algorithmic Approach for This Patient:

1. Initial assessment endoscopically:

   • Measure fistula diameter precisely
   • Assess tissue quality (fibrotic vs fresh)
   • Evaluate surrounding inflammation

2. If fistula <1 cm with healthy edges:

   • Proceed directly with OTSC closure 1
   • Begin clipping at the distal end of defect for optimal visualization 1

3. If fistula 1-2 cm or fibrotic edges:

   • Deploy helical tacking in Z-shape to approximate edges 2
   • Follow immediately with OTSC for definitive closure 2
   • Consider mucosal coagulation with APC around margins to create fresh wound surface 3

4. If initial closure fails:

   • Repeat endoscopic attempts are safe and feasible 3
   • One case achieved healing after three sessions over 4 months 3
   • Consider ESD technique to freshen edges before re-attempting OTSC 4

Critical Pitfalls to Avoid:

• Don't use standard through-the-scope clips alone for fistulas: The guideline explicitly states these are "usually not effective" for esophageal fistulas 1
• Don't delay intervention: Success rates drop significantly after 72 hours 1
• Don't overlook the recurrent pneumonia: This indicates active fistula communication requiring urgent closure to prevent ongoing aspiration and infection
• Don't attempt closure without keeping the area clean: Suction and patient repositioning are essential first steps 1

Backup Strategy:

If endoscopic closure completely fails despite combined techniques, placement of a fully covered self-expanding metal stent (SEMS) with proximal fixation is the next option 1. The stent should be slightly wider than natural esophageal diameter and fixed with endosuturing or stent-fixing device to prevent migration in the absence of stricture 1.

The combination approach (helical tacking + OTSC) represents the most current evidence-based strategy for complex upper esophageal fistulas, with multiple 2026 case reports demonstrating successful outcomes 2, 4, 5. This patient's failed fundoplication and recurrent pneumonia make endoscopic closure urgent to prevent ongoing morbidity from aspiration.