High-resolution esophageal manometry
Esophageal manometry is a test of the strength and function of muscles
involved in moving food and liquid from the mouth into the stomach. The
test is mainly used to evaluate for GERD
or a suspected motility (swallowing) disorder. During the test, a thin
flexible tube is inserted into the nose and guided down the esophagus to
the stomach. The tube has sensors that measure the strength and
coordination of muscle contractions at multiple points in the esophagus
24-Hour esophageal pH and impedance monitoring
Esophageal pH monitoring is used to evaluate for GERD.
The test measures how often stomach acid refluxes (flows back) into the
lower esophagus and the degree of acidity over a period of time.
Esophageal impedance monitoring is used to evaluate reflux of digestive
fluids other than stomach acid, such as bile. Impedance testing is
helpful when determining the cause of reflux symptoms. We offer a
24-hour test that monitors for both acid and nonacid secretions. For the
test, a thin flexible tube with a tiny monitoring device at the end is
inserted into the nose and guided into the esophagus. The tube is
removed the following day.
48-Hour esophageal pH monitoring
With this test (also called a Bravo test), a capsule-sized
acid-measuring probe is attached to the lower part of the esophagus
during an upper endoscopy procedure. Over the next 48 hours, a
monitoring device is worn that captures information from the probe. The
probe then detaches and is excreted in a bowel movement.
It is used in the evaluation of fecal incontinence or constipation. The
test measures the strength and function of the anal sphincter muscles.
Wireless capsule motility testing (SmartPill)
It is used to help diagnose motility disorders such as gastroparesis,
irritable bowel syndrome,
and chronic constipation. For the test, a small capsule-sized device is
swallowed and travels through the digestive tract, transmitting
information about pressure, pH, and transit times for each segment of
the digestive tract and the system overall. A data recorder, worn on a
belt, collects the information. The device is excreted in a bowel
Radiologic Tests and Procedures
Lankenau radiologists participate in the evaluation of many digestive
and liver abnormalities. Radiologic tests and procedures include but are
not limited to:
For more information, call 1.866.CALL.MLH.