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Antroduodenal Manometry is a test to assess the function of stomach and proximal intestine by directly recording the pressure waves called “peristalsis.” This is done by placing a thin plastic tube or probe with pressure sensors through the nose and into the stomach and upper small intestine during an upper endoscopy by your child's gastroenterologist or sometimes by a radiologist, who guides it in using fluoroscopy or video X-ray study.
- Nausea and/or vomiting
- Frequent reflux/regurgitation
- Early satiety
- Delayed emptying of stomach
- Suspected upper gastrointestinal motility problems
Before the test, your child should not eat or drink anything eight hours prior because this can cause problems with the anesthesia or sleep medicine administered before the test. Your doctor may also instruct you to hold some medicines that can interfere with the manometry related test.
- Upper endoscopy: Your doctor will place the probe using a flexible tube with a camera, called an endoscope. The procedure typically takes about 30-45 minutes to complete. During the endoscopy, your doctor may take small tissue samples, called biopsy, from the gastrointestinal tract. When the procedure is completed, your doctor will come out and meet you in the waiting area to give you a full report of the endoscopy, and escort you to your child in the recovery area.
After the endoscopy is completed, your child will have the probe going through the nose into the stomach and upper small intestine. This probe is connected by a set of wires to a portable recorder that your child can carry around for the duration of the study. Once they are awake, and a bed is available, your child will be taken into the inpatient unit. We ask that at least one parent stay with the child at the hospital during the study to record on a diary.
- Manometry study: There will be a set of instructions (or protocol) on when your child can or cannot eat, and when medicine(s) will be given to assess their effects on the gastrointestinal activity. When appropriate, meals can be ordered through the On-Call Dining Menu. A couple of X-rays will be performed at intervals to assess the position of the probe during the study period. Typically the probe stays in for about 24 hours. If indicated, your doctor may recommend a tilt table test along with the manometry study. After the protocol is completed, the probe is removed at bedside and the information stored in the recorder is uploaded to the computer for analysis.
- Results of the test: Your doctor will provide you with the results as they become available. You will be asked to return for a visit to discuss results of all the tests your child may have undergone, and to discuss options and plans.
Our team of doctors, physician assistants, nurse practitioners, nurses and technicians will help you through the process. Contact our team at 202-476-3032. Please do let us know of any questions you may have. Reach out to Patient Experience Liason Michele Grady, 202-476-6160, for questions regarding your overnight stay in the hospital or learn more about having surgery at Children's National and what to expect.