Complications to Monitor in Patients with Achalasia

Primary Complications

• Patients with a history of achalasia should be monitored for perforation, pulmonary aspiration, chest infections, dysphagia, weight loss, and post-treatment reflux as these are the most significant complications affecting morbidity and mortality 1, 2
• Risk of perforation is 0-7% (mostly 3-4%) with pneumatic dilatation, with mortality <1% 3
• Suspect perforation when patients develop pain, breathlessness, fever, or tachycardia 1
• Perforation is more common during the first dilatation procedure 3
• Requires immediate medical attention as it is a medical emergency requiring assessment by experienced physicians and surgeons 1

Pulmonary Complications

• Pulmonary aspiration is a major complication due to food and fluid retention in the esophagus 1
• Patients with achalasia are particularly prone to esophageal stasis, increasing aspiration risk 4
• Chest infections may develop secondary to aspiration of retained esophageal contents 1
• Patients should be monitored for respiratory symptoms including cough, fever, and shortness of breath 2

Persistent or Recurrent Dysphagia

• May indicate need for repeat dilatation or alternative treatment 5
• Recurrent dysphagia may require additional interventions or different treatment approach 5

Post-Treatment Complications

Post-Treatment Reflux

• Usually mild and readily controlled with acid suppression 3
• Can lead to reflux esophagitis and stricture formation if untreated 5

Bleeding

• Rare complication following dilatation procedures 6
• Study of 504 balloon dilations in achalasia patients showed 1.7% asymptomatic hematomas but no clinically significant hemorrhage 6

Monitoring Recommendations

Post-Procedure Monitoring

• Close observation after dilatation procedures with regular measurement of pulse, blood pressure, and temperature 2
• Chest x-ray and contrast study should be performed urgently if patients develop pain, breathlessness, fever, or tachycardia 1
• Patients should receive written information about warning signs requiring immediate medical attention 1

Long-Term Surveillance

• Regular follow-up to assess symptom control and nutritional status 5

Special Considerations

Elderly Patients

• Higher risk of complications from treatment procedures 1

Patients on Anticoagulants

• Consider discontinuation of anticoagulants prior to dilatation procedures to reduce bleeding risk 4
• For high-risk patients, bridging therapy with heparin may be necessary 4

Patients with Comorbidities

• ASA grades III-V patients are at higher risk of cardiorespiratory events during procedures 4