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Dig Dis Sci. 2014 Aug;59(8):1817-22. doi: 10.1007/s10620-014-3080-z. Epub 2014 Feb 23.

Multichannel intraluminal impedance-pH testing is clinically useful in the management of patients with gastroesophageal reflux symptoms.

Author information

1
Division of Gastroenterology and Hepatology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA, jodorkovsky@gmail.com.

Abstract

BACKGROUND:

Multichannel intraluminal impedance-pH testing (MII-pH) allows for the detection of acid and non-acid reflux, thus, increasing yield over pH testing. Limited data exist on how physicians use test results in practice.

AIM:

The aim of our study was to evaluate the influence of MII-pH testing on patient care.

METHODS:

We reviewed records of patients with symptoms of gastroesophageal reflux disease who underwent MII-pH testing. Management decisions evaluated included changes in prescribed medications and surgical consultation for anti-reflux surgery. Statistical analysis was performed using Pearson Chi square test, and multivariable logistic regression.

RESULTS:

MII-pH testing resulted in a medication change in 41% of patients, surgical consultation in 19.7%, and anti-reflux surgery in 11.1%. In patients who were not on proton pump inhibitor (PPI) therapy, MII-pH results were most useful in the decision to start a PPI. On PPI therapy, results were more often used to decide whether to increase (32.3%) or switch the PPI (23.5%) in patients with continued acid reflux. Results were most useful to stop the PPI in normal studies (11.1%). More patients with non-acid reflux (14.3%) and normal results (19.7%) were started on a neuromodulator compared to other diagnoses. The MII-pH result was most useful in the decision to start baclofen or bethanecol when the patient was found to have non-acid reflux (25%). Patients with an abnormal MII-pH or abnormal MII alone were more likely to be referred to surgery (OR 19.5, p < 0.001; OR 19.77, p < 0.001).

CONCLUSIONS:

MII-pH testing impacted medical or surgical management in over half the patients tested.

PMID:
24563276
DOI:
10.1007/s10620-014-3080-z
[Indexed for MEDLINE]

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