Diagnosis and Management of Achalasia Cardia
Diagnostic Evaluation
- The American Gastroenterological Association recommends that all patients suspected of having achalasia must undergo a comprehensive diagnostic evaluation including clinical history with medication review, upper endoscopy, timed barium esophagram, and high-resolution manometry (HRM) to confirm the diagnosis and guide treatment decisions 1, 2
- Upper endoscopy (EGD) is mandatory to identify findings suggestive of poor esophageal clearance and to exclude pseudoachalasia from occult malignancy through careful retroflexed examination of the gastroesophageal junction 2, 3, 4
- Timed barium esophagram confirms outflow obstruction, demonstrates structural changes, and can reveal more subtle narrowing at the esophagogastric junction; administration of a 13-mm barium tablet may elicit additional evidence 2
- High-resolution manometry (HRM) remains the gold standard for diagnosis and is crucial for defining achalasia subtype according to the Chicago Classification system, which has critical therapeutic implications 2, 5
Management Strategy
- For type I and type II achalasia, POEM (per-oral endoscopic myotomy), laparoscopic Heller myotomy (LHM), and pneumatic dilation (PD) are all effective therapies; the decision should be based on shared decision-making considering patient characteristics, preferences, and local expertise 1, 2
- POEM should be considered the preferred treatment for type III achalasia because it allows unlimited proximal extension of myotomy tailored to the extent of esophageal body spasm, which is critical for optimal outcomes in this subtype 1, 2, 6, 7
- Pneumatic dilation has less morbidity and cost compared to surgical options but requires anticipation of repeat dilations over years 6, 8
POEM-Specific Considerations
- POEM should be performed by experienced physicians in high-volume centers as an estimated 20-40 procedures are needed to achieve competence 6, 7, 9
- A single dose of antibiotics at the time of POEM may be sufficient for antibiotic prophylaxis 1
- Pharmacologic acid suppression should be strongly considered in the immediate post-POEM setting given the increased risk of postprocedure reflux and esophagitis 1
Alternative Treatment Options
- Graded pneumatic dilation to between 13-20 mm provides good relief in 85-93% of cases with benign strictures 10
- Perforation risk is 0-7% (mostly 3-4%) with mortality <1%; most perforations occur during the first dilatation 10
Critical Complications to Monitor
- Suspect perforation when patients develop pain, breathlessness, fever, or tachycardia after any intervention 10
- Monitor for pulmonary aspiration, chest infections, persistent dysphagia, and weight loss as these are the most significant complications affecting morbidity and mortality 11
Special Populations
- Patients at low risk of thromboembolic events should discontinue anticoagulants prior to dilatation with preprocedure prothrombin time performed 3, 4
- High-risk patients should discontinue oral anticoagulants and transition to intravenous heparin, which should be stopped 4-6 hours before and resumed 4-6 hours after the procedure 3, 4
Management of Achalasia Cardia
Primary Treatment Selection
- For type I and II achalasia, pneumatic dilation (PD) and laparoscopic Heller myotomy (LHM) are equally effective with 90% first-year success rates, but for type III (spastic) achalasia, per-oral endoscopic myotomy (POEM) is the definitive preferred treatment due to its ability to perform longer, tailored myotomy 12
Treatment Algorithm by Achalasia Subtype
- Pneumatic dilation protocol starts with a 30 mm balloon in the first session to minimize perforation risk, with effectiveness of 90% at 1 year, 86% at 2 years, and long-term success rates of 97% at 5 years and 93% at 10 years with repeat dilations 13
- Laparoscopic Heller myotomy with partial fundoplication has comparable efficacy to PD, with a lower reflux rate and higher upfront cost, but fewer repeat procedures needed 12
- POEM is the preferred primary therapy for type III achalasia, allowing unlimited proximal extension of myotomy tailored to the extent of esophageal body spasm, with 92% response rates 12
Post-Treatment Management
- PPI therapy is strongly recommended after all treatments, particularly POEM, which has the highest reflux risk, with a 10-40% rate of symptomatic GORD or ulcerative esophagitis 13, 12
- Post-POEM patients may require indefinite PPI therapy and surveillance endoscopy 12
Critical Decision Points
- Choose PD when the patient prefers a less invasive approach with lower upfront morbidity and cost, and accepts the need for potential repeat procedures over years 12, 13
- Choose POEM when the patient has type III achalasia, and a high-volume center with an experienced operator is available, with the patient accepting higher reflux risk and need for indefinite PPI therapy 12
POEM vs Serial Dilation in Elderly Achalasia Patients
Treatment Selection Framework for Elderly Patients
- The American Gastroenterological Association recommends that POEM is equally safe and effective compared to younger patients and should be considered the preferred treatment option over serial pneumatic dilation, particularly for type III achalasia, though both modalities remain viable options depending on patient comorbidities and local expertise 14
Pneumatic Dilation Considerations
- For type I and II achalasia, pneumatic dilation remains highly efficacious with 90% first-year success rates and long-term success of 97% at 5 years and 93% at 10 years, offering lower upfront morbidity and cost 15
- Pneumatic dilation requires anticipation of repeat dilations over years, which may be a consideration in elderly patients with limited life expectancy 15
Achalasia Subtype-Specific Recommendations
- The American Gastroenterological Association recommends that POEM is definitively the preferred treatment for type III achalasia in elderly patients because it allows unlimited proximal extension of myotomy tailored to the extent of esophageal body spasm 14
- The ability to perform longer, calibrated myotomy is critical for optimal outcomes in type III achalasia subtype 16
Post-Procedure Reflux Management
- All elderly patients undergoing POEM must be counseled about high risk of reflux esophagitis (10-40% rate) and the potential need for indefinite proton pump inhibitor therapy and surveillance endoscopy 14