Esophageal Motility Disorders and Achalasia in Bariatric Surgery Patients

Overview

This retrospective descriptive analysis evaluates clinical outcomes in patients undergoing treatment for esophageal motility disorders (EMDs) including achalasia in the context of bariatric surgery. Patients were stratified by timing of EMD diagnosis and treatment relative to bariatric surgery, assessing symptom resolution, weight loss, complications, and reintervention needs.

Background

Obesity is associated with a high prevalence of esophageal motility disorders such as achalasia, which complicates diagnosis and management in bariatric surgery candidates. Achalasia involves impaired lower esophageal sphincter relaxation and absent peristalsis, with treatments including pneumatic dilation, Heller myotomy, and POEM. Bariatric procedures like Roux-en-Y gastric bypass and sleeve gastrectomy alter gastrointestinal anatomy and physiology, potentially impacting esophageal motility and unmasking or inducing EMDs. Data on managing patients with both obesity and achalasia undergoing bariatric surgery remain limited.

Data Highlights

The study included patients treated for both achalasia or EMDs and severe obesity between 2008 and 2023 at a single academic center. Patients were categorized into achalasia-first (AF) and bariatric-first (BF) groups based on timing of diagnosis and treatment. Data collected encompassed demographics, diagnostic modalities (endoscopy, high-resolution manometry, barium esophagogram), treatment types (POEM, Heller myotomy, pneumatic dilation, botulinum toxin), bariatric procedure type (RYGB, SG), weight loss outcomes (% total weight loss at 1 year and last follow-up), symptom resolution, complications, and reintervention rates.

Key Findings

• Achalasia and EMDs were identified both before and after bariatric surgery, with patients stratified into achalasia-first and bariatric-first groups.
• Symptom resolution was primarily assessed by patient-reported improvement in dysphagia and related symptoms, without standardized scoring due to confounding by weight loss.
• Heller myotomy with partial fundoplication was performed prior to bariatric surgery when indicated, with fundoplication takedown during RYGB to facilitate gastric pouch creation.
• Patients with prior sleeve gastrectomy undergoing myotomy did not receive concomitant anti-reflux procedures but were managed postoperatively with acid suppression therapy.
• Bariatric surgery-related complications and the need for reintervention were tracked, highlighting the complexity of managing this patient population.
• The study underscores the diagnostic and therapeutic challenges posed by overlapping symptoms of obesity and achalasia and the potential for bariatric surgery to unmask or induce EMDs.

Clinical Implications

Clinicians should maintain a high index of suspicion for esophageal motility disorders in obese patients undergoing bariatric surgery, especially those presenting with dysphagia. Individualized treatment strategies considering the timing of achalasia diagnosis relative to bariatric surgery are essential, with multidisciplinary collaboration to optimize outcomes. Awareness of potential postoperative esophageal dysfunction and the need for tailored surgical approaches can improve symptom control and weight loss results.

Conclusion

This descriptive analysis highlights the complex interplay between esophageal motility disorders and bariatric surgery, emphasizing the importance of careful diagnostic evaluation and individualized treatment sequencing. Further research is needed to develop standardized management protocols for this rare but clinically significant patient population.

References

1. Introduction Section References 1-15 -- Esophageal Motility Disorders and Achalasia in Bariatric Surgery