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Heartburn, primarily in patients who have failed medical treatment and are candidates for surgery
Uncommon symptoms of GERD (gastroesophageal reflux disease), such as chest pain, chronic cough, and asthma
How Is the Esophageal pH Test Performed?
The equipment used in the esophageal pH test consists of a small probe that is inserted through your nostril and positioned near the lower esophagus. The probe is plugged into a small unit (or monitor) worn on your belt or over your shoulder.
The device has several buttons that, when pressed, record:
The occurrence of symptoms
When you eat and lie down
A nurse will review the monitoring instructions with you.
Be careful with the monitor and keep it dry at all times.
How Should I Prepare for the Esophageal pH Test?
When preparing for the esophageal pH test, do not eat or drink for 4 to 6 hours before your doctor's appointment.
Tell your doctor if you are pregnant, have a lung or heart condition or any other diseases, or are allergic to any medications.
Can I Continue to Take Medication Before the pH Test?
There are several medications that may affect the results of an esophageal pH test. These include:
There are other medications that may affect the test results. Talk to your doctor about all medications you are taking before undergoing the procedure.
Do not discontinue any medication without first consulting with your primary or referring doctor. If proton pump inhibitors need to be discontinued, you will take a week off these medications before doing the test.
What Should I Do During the Esophageal pH Test?
Throughout the monitoring period of the esophageal pH test, there are several things you need to be aware of to assure accurate results:
Activity: Try to follow your usual routine during the monitoring period. Many people tend to reduce or change their activities during the testing period; however, such changes can affect reflux occurrence and make the results of the monitoring period less useful. Do not take a bath or shower during the monitoring period, as the equipment should not get wet.
Eating: Eat your regular meals at the usual times and eat the way you normally do. If you do not eat during the monitoring period, your stomach will not produce acid as usual and the test results will not be accurate. You need to eat at least two meals a day. Eat foods that tend to increase your symptoms (without making yourself miserable!). You may drink as much plain water as you want.
Lying down: Remain upright throughout the day. Do not lie down until you go to bed, unless napping or lying down during the day is part of your normal daily routine.
Medications: Continue following your doctor's recommendations regarding which medications to avoid during the monitoring period.