Houston Methodist. Leading Medicine.
Houston Methodist. Leading Medicine


For Physicians

For Gastroenterologists

As a gastroenterologist, you may find tests offered below in the Reflux Center useful in diagnosing and managing GERD, chronic constipation, dysphagia, intestinal pseudo-obstruction, or assessing esophageal or anorectal motility prior to or after surgery.

Our testing capability has improved dramatically and patients can now be studied on or off acid suppressive medications and with or without nasal catheters.

  • Impedance-pH monitoring (on acid suppressive medications) can demonstrate non-acid reflux.
  • Catheter free pH monitoring (BRAVO) can demonstrate the degree and quantity of esophageal reflux in a 48 hour period without the discomfort of a catheter placed in the nose.
  • Ambulatory pH monitoring can demonstrate the degree of reflux in multiple locations in the esophagus using a nasal catheter in a 24 hour period.
  • High resolution esophageal manometry will reveal esophageal motility disorders such as achalasia or impaired esophageal clearance.
  • Pharyngeal manometry may demonstrate cricopharyngeal discoordination
  • Fiberoptic endoscopic evaluation of swallowing test (FEEST) can reveal risk for aspiration in patients who cannot undergo modified barium swallows.
  • High resolution anorectal manometry can diagnose Hirschprung’s disease and assess neuromuscular function important for continence.  Functional testing can suggest pelvic floor dysfunction causing constipation.
  • Gastroduodenal manometry (small bowel motility) can suggest a neuropathic or myopathic cause for intestinal pseudo obstruction.
  • Electrogastrography (EGG) can suggest a cause for chronic nausea and vomiting by showing tachygastria or bradygastria gastric rhythms which may help you design therapy.