A diagnostic test that measures pressure and muscular activity in hollow organs, most commonly the esophagus, anorectal region, or stomach.

Mechanism:

A thin, flexible catheter with pressure sensors is inserted into the organ

Records muscle contractions, sphincter function, and coordination during rest and activity (e.g., swallowing)

Common Uses / Indications

Esophageal Manometry

Evaluate esophageal motility disorders:

Achalasia

Diffuse esophageal spasm

Nutcracker esophagus

Assess lower esophageal sphincter (LES) function before anti-reflux surgery

Anorectal Manometry

Assess anal sphincter function

Evaluate chronic constipation, fecal incontinence, or Hirschsprung disease

Gastric/Intestinal Manometry

Rarely used to evaluate gastroparesis or intestinal motility disorders