Esophageal pH monitoring

Alternative names:

esophageal acidity test; pH monitoring - esophageal

Normal values:

Normal values vary from person to person, and with different equipment and technique.

What abnormal results mean:

An increased frequency or duration of acid in the esophagus often correlates with:

• heartburn
• gastroesophageal reflux disease (GERD)
• esophageal scarring
• reflux esophagitis
• dysphagia (a late symptom of esophageal scarring)

To determine the extent and severity of esophagitis, if present, further studies may be indicated:

• esophagogastroduodenoscopy
• barium swallow