What is the recommended surgical management for achalasia?

Surgical Management of Achalasia

For type I and II achalasia, laparoscopic Heller myotomy (LHM) with fundoplication and per-oral endoscopic myotomy (POEM) are both highly effective options with >90% symptom relief, while POEM should be the preferred surgical approach for type III achalasia due to its ability to extend the myotomy proximally along the spastic esophageal segment. 1

Treatment Selection by Achalasia Subtype

Type I and II Achalasia

Both POEM and LHM with fundoplication are effective first-line surgical therapies with comparable efficacy for symptom relief (>90% success rates). 1, 2 The decision between these approaches should be based on:

• Local expertise availability: POEM requires 20-40 procedures to achieve competence and should only be performed at high-volume centers 2
• Patient age: Surgery is especially indicated in patients ≤40 years 3
• Reflux considerations: LHM with fundoplication has significantly lower post-treatment reflux rates (8.8% vs 31.5% without fundoplication, and substantially lower than POEM's up to 58% reflux rate) 2, 4
• Prior failed treatments: Both POEM and LHM can be safely performed after failed endoscopic interventions 3

Type III Achalasia (Spastic)

POEM is the preferred surgical treatment because it allows unlimited proximal extension of the myotomy to address the full extent of esophageal body spasm, which cannot be adequately achieved laparoscopically without extensive mediastinal dissection. 1, 2 The myotomy length should be calibrated to the proximal extent of spastic contractions identified on high-resolution manometry.

Technical Considerations

Laparoscopic Heller Myotomy

• Must include either posterior (Toupet) or anterior (Dor) fundoplication to minimize reflux risk 2
• The 270° Toupet fundoplication provides superior reflux control compared to 180° Dor 3
• Requires surgical isolation of the esophagogastric junction with division of phrenoesophageal ligament and short gastric vessels 2
• Robotic-assisted approach offers better angulation, lower mucosal laceration rates, and improved visualization compared to standard laparoscopy 3

POEM Advantages

• No abdominal incisions with faster recovery 2
• Avoids vagal nerve injury risk 2
• No intra-abdominal adhesions that could complicate future surgery 2
• Can perform longer myotomies without mediastinal dissection 1
• Effective for redo procedures after failed prior myotomy 5

Critical Post-Treatment Management

Reflux Surveillance After POEM

All POEM patients must be counseled pre-procedure about high reflux risk (up to 58% develop gastroesophageal reflux) and the need for:

• Indefinite proton pump inhibitor therapy 2
• Surveillance endoscopy for erosive esophagitis 2
• Odds ratio of 9.31 for developing erosive esophagitis compared to LHM 2

This reflux risk is substantially higher than LHM with fundoplication (8.8%) 4, making LHM the preferred option when reflux prevention is a priority.

Pre-Treatment Diagnostic Requirements

Before any surgical intervention, confirm diagnosis with:

• High-resolution manometry (gold standard) to define Chicago Classification subtype 1
• Esophagogastroduodenoscopy with careful retroflexed examination to exclude pseudoachalasia 1
• Timed barium esophagram to assess structural changes and severity 1
• Functional luminal imaging probe (FLIP) as adjunct when diagnosis is equivocal 1

Common Pitfalls to Avoid

1. Performing POEM without adequate expertise: The procedure requires 20-40 cases to achieve competence; refer to high-volume centers 2

2. Omitting fundoplication with LHM: This increases reflux risk from 8.8% to 31.5% (OR 6.3) 4

3. Using standard-length myotomy for type III achalasia: Spastic segments require extended proximal myotomy, making POEM superior to LHM 1, 2

4. Inadequate reflux counseling before POEM: Patients must understand the high likelihood of requiring lifelong PPI therapy 2

5. Treating EGJOO or non-achalasia spastic disorders without comprehensive evaluation: These conditions should only undergo POEM after exhausting less invasive approaches and on a case-by-case basis 1

Special Populations

End-Stage Disease

For patients with sigmoid-shaped megaesophagus and end-stage achalasia, esophagectomy is a reasonable option to improve quality of life when myotomy approaches are unlikely to succeed. 3

Failed Prior Endoscopic Treatment

Surgery (either POEM or LHM) can be safely performed after failed pneumatic dilation or botulinum toxin injection, and is particularly recommended after repeated unsuccessful or complicated endoscopic interventions. 3