24 Hour -Esophageal pH Impedance Study
This test measures the length of time it takes for your child’s stomach contents (acid or non-acid) to come back up into his or her esophagus (gastro Esophageal Reflux or GER) and helps in co relating with the symptoms of reflux or extra esophageal reflux symptoms. This is one of the best possible tests for diagnosing gastroesophageal reflux disease (GERD).
In this test, a small probe is put through the nose and into the esophagus (feeding tube). The probe measures gastric contents coming up in the oesophagus over a 18-24-hour period. It can also tell if the stomach contents are acid or non-acid.
The small probe is attached to a monitor which records reflux continuously. Because the probe is attached to the monitor, your child will stay in hospital overnight with one of the parent.
Some reflux of stomach contents into the esophagus is normal, but if this happens more often than normal, or for long periods of time, it may cause discomfort, vomiting, irritation to the lining of the esophagus or weight loss. It can also cause breathing problems such as a cough, asthma or aspiration pneumonia.
A pH-Impedance Study takes 18-24 hours. The probe is left in place for this time. You will be instructed and asked to press appropriate buttons on the monitor. The doctor will use the data collected in the monitor to compare the computer reading with your child’s activity.
WHAT HAPPENS BEFORE 24 HOUR pH-IMPEDANCE STUDY:
- If your child takes medication to reduce the amount of acid in the stomach like omeprazole (Losec) or any other acid blocking medication, please cease giving this medication 3 days prior to the study date.
- Fasting instructions are NOTHING TO EAT or DRINK for at least 3 hours prior to procedure, if > 6 months of age. Please confirm this with the nurse or anesthetist.
- You will also get an opportunity to speak to Ms Kaye Talijancich, Nurse at Perth Paediatrics before the procedure to answer any questions if you have.
WHAT HAPPENS DURING THE pH-IMPEDANCE STUDY:
- The Perth Paediatrics Nurse – Ms Kaye Talijancich, will visit the child and parent on the ward with the monitor. She will explain you in detail regarding the study.
- Your child will be fasting prior to the Upper Endoscopy. The Impedance probe will be inserted in theatre under direct vision during the upper GI endoscopy. If the child is older and cooperative, then this test could be done as an outpatient . Please check with your doctor.
- Your child will wake in recovery with the probe taped to his/her face and the monitor attached.
- Special splints may be put on infants and small children to prevent them from bending their elbows and pulling out the probe. Hand mittens are also an alternative.
- Your child can eat and drink normally on returning to the ward.
- Nursing staff will remove the probe the following day on the ward. Removing the probe takes less than a minute and does not hurt.
WHAT HAPPENS AFTER THE pH-IMPEDANCE STUDY:
- When the probe is removed, your child’s Gastroenterologist-Dr Ajay Sharma or other primary Gastroenterologist will interpret the information recorded in the computer.
- Please note, to get the formal analysis and result, it may take 1-2 weeks. Please call Perth Pediatrics on 6162 1615, to make a follow-up appointment to discuss the results and further management.
- If another doctor asked for the test, the results will be sent to that doctor’s office and they will contact you.
If you have any questions about the upcoming Impedance Study, or any other aspect of your child’s treatment, please ring Perth Paediatrics on (08)- 6162 1615 or Ms Kaye Talijancich (Nurse) on 0410 300 376.