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Abnormal 24-hour pH-impedance Testing Does Not Predict Reduced Quality of Life in Children With Reflux Symptoms.

OBJECTIVES
Symptoms of gastroesophageal reflux (GER) have been associated with reduced health-related quality of life (QOL) in children, though it is unclear whether reflux burden on objective diagnostic testing, such as 24-hour multichannel intraluminal impedance with pH (pH-MII) is associated with impaired QOL in children. Our aim was to identify predictors of QOL impairment based on the results of esophageal reflux testing.


METHODS
In this prospective, cross-sectional study of children undergoing pH-MII and esophagogastroduodenoscopy (EGD) for evaluation of suspected gastroesophageal reflux disease, we collected validated questionnaires (Pediatric Gastroesophageal Symptom and Quality of Life Questionnaire [PGSQ], Pediatric Quality of Life Inventory 4.0 [PedsQL] and PedsQL Gastrointestinal Symptoms Module [GI PedsQL]) to determine the relationship between objective measures of GER, patient-reported symptoms and QOL outcomes.


RESULTS
Of the 82 subjects, 38% of children had an abnormal pH-MII study. There were no significant differences in QOL scores on any questionnaire between patients with normal and abnormal pH-MII studies (P > 0.11). There was no correlation between individual pH-MII parameters and QOL scores. Subjects with gross esophagitis on EGD reported significantly worse QOL with lower total PedsQL (P = 0.002) and GI PedsQL (P = 0.03) scores. Microscopic esophagitis was not associated with differences in QOL scores (P > 0.32).


CONCLUSIONS
There was no relationship between abnormalities on pH-MII testing and reduced QOL in children. These findings highlight the importance of considering other diagnoses beyond GERD as they may be significant drivers for QOL impairment.