GI Endoscopy · 7 min read
Esophageal Dysphagia: EGD First, Then Chicago 4.0, Not an Automatic POEM
Solids and liquids with a normal esophagus is a motility problem. Prove it on HRM. Do not skip the look for a stricture, ring, or EoE.
Honor the slug: esophageal dysphagia starts with endoscopy. A stricture, Schatzki ring, mass, or EoE is a mechanical or inflammatory diagnosis, not a Chicago chart. If the lumen is truly normal, high-resolution manometry with Chicago Classification 4.0 (Yadlapati, PMID 33373111) is the language. An elevated IRP is not a standing order for POEM. EGJ outflow obstruction needs corroboration. Achalasia still does.
Experienced teaching points
Clinical Pearls
- EGD first, with a look for rings, furrows, stricture, and a biopsy protocol if EoE is in play. A pretty pink esophagus is required before you call it motility.
- Chicago 4.0 achalasia: elevated IRP plus 100% failed peristalsis. Type II (pan-pressurization) is the POEM/dilation winner. Type III is spastic and harder.
- EGJOO is elevated IRP with preserved peristalsis. Confirm with timed barium or FLIP. It is not automatic myotomy.
- Jackhammer is DCI 8000 or more in at least 20% of swallows. Hypercontractile is not a first-line POEM indication.
- Peptic and complex strictures: dilation. EoE: EoE page. LA grade: GERD/LA. Zenker is not achalasia: Z-POEM.
Clinical Bottom Line
| Finding | What to do |
|---|---|
| Any esophageal dysphagia | EGD first. Dilation of a peptic or Schatzki lesion is a mechanical therapy. Biopsy if EoE is plausible. Do not start with a manometry catheter through an unseen stricture. |
| Normal EGD, solids and liquids | HRM, Chicago 4.0 (Yadlapati, PMID 33373111). Ten wet swallows in the supine position is the standard protocol. Upright swallows and provocative testing are part of 4.0, not extras you skip. |
| Achalasia I / II / III | Elevated IRP plus absent peristalsis. I: failed, no pressurization. II: pan-esophageal pressurization. III: premature/spastic. This is the myotomy or pneumatic dilation conversation. There is no separate achalasia URL on this site; keep the types here. |
| EGJOO | Elevated IRP, peristalsis present. Chicago 4.0 wants supportive testing (timed barium swallow, FLIP). Isolated IRP elevation is often artifact or opiate effect. Not automatic POEM. |
| IEM / absent contractility / jackhammer / DES | Peristalsis disorders with a relaxing EGJ. Treat reflux and obstruction mimics first. Hypercontractile (jackhammer) is DCI 8000 or more in 20% or more of swallows. Distal esophageal spasm is premature (short distal latency), not "a twitchy report." |
Why not manometry first?
Because the slug is dysphagia, not "interpret this Clouse plot." EoE, peptic stricture, cancer, and a tight fundoplication are endoscopic diagnoses. The leftover stub on this URL jumped from a normal pink esophagus to "curative POEM" as soon as IRP was high. That skips EGJOO confirmation, opiate artifact, mechanical obstruction you missed, and the fact that Type II achalasia is a different conversation from jackhammer.
Chicago 4.0 (Neurogastroenterol Motil 2021;33:e14058, PMID 33373111) tightened EGJOO, required conclusive evidence beyond a single IRP cutoff, and kept the achalasia subtypes. Timed barium swallow is cheap corroboration. FLIP is useful when HRM and the story disagree. Neither replaces the EGD.
When is POEM the next step?
In conclusive achalasia, after you have named the subtype and discussed pneumatic dilation and laparoscopic Heller as real alternatives. Type II responds best. Type III is the spastic pattern where POEM's longer myotomy is often preferred. EGJOO that has been confirmed and is still disabling can be a selected myotomy, not a reflex. Jackhammer and DES are not first-line POEM. Cricopharyngeal myotomy for Zenker is a different operation on a different page.
Do not restage how to dilate a peptic stricture, how to grade LA esophagitis, or how to treat EoE here.
Selected references
Last reviewed September 20, 2026. Written for clinicians facing solid-and-liquid dysphagia after a normal EGD and deciding whether HRM, dilation, or a myotomy referral is next.
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