The Characteristics of Esophageal Multichannel Intraluminal Impedance-PH Measurements in Infants Experiencing Brief Resolved Unexplained Events
Keywords:
Brief resolved unexplained events, Apparent life-threatening events, Multichannel intraluminal impedance-pH study; Gastroesophageal reflux disease; InfantsAbstract
Background: Brief Resolved Unexplained Events (BRUE) is defined as a sudden, brief and now resolved episode characterized by color change, altered respirations, change in tone, and altered level of responsiveness. This study aims to identify the characteristics of esophageal Multichannel Intraluminal Impedance-pH (MII-pH) monitoring in infants who have experienced a BRUE. Methods: This study was a retrospective review of records of infants younger than 12 months who presented to the University of South Alabama Children’s and Women’s Hospital with an admission diagnosis of BRUE. Patients who underwent esophageal MII-pH monitoring between October 2015 and February 2017 and diagnosed with BRUE were initially included in this study. Results: Fifty-three infants (preterm 25, term 28) who experienced a higher risk BRUE were included in our study. The mean age at diagnosis was 2.25 ± 2.07 months. Apnea (41/53; 77.4%) was the most common manifestation of BRUE. Non-acid reflux events were the most common findings in the MII-pH studies (66%). MII-pH results showed 6/53 (11%) acid reflux, 17/53 (32%) non-acid reflux and 12/53 (23%) both acid/nonacid reflux and 18/53 (34%) were normal. There were significant differences in the longest acid reflux episode and the Reflux Symptom Sensitivity Index (RSSI) of coughing/choking/gagging between preterm and term infants. The Reflux Symptom Index (RSI), RSSI and Reflux Symptom Association Probability (RSAP) were significantly correlated with each other in all symptoms (pain/fussiness, coughing/ choking/gagging and vomiting). Conclusions: Among infants experiencing a higher risk BRUE, esophageal MII-pH monitoring revealed acid or nonacid reflux in 2/3 of patients.
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