IntroductionA brief resolved unexplained event (BRUE) describes an event associated with a change in muscle tone, color, respiration, and responsiveness that is unexplained after an appropriate examination. Some infants with higher risk BRUE may undergo endoscopy as part of their evaluation.ObjectiveThis retrospective study aimed to identify the endoscopic findings in infants who have experienced a higher risk BRUE. We also compared the characteristics, prenatal, natal, and postnatal risk factors between 23 infants who underwent endoscopic evaluation and 23 race-matched/sex-matched/term-matched/preterm-matched infants who did not undergo endoscopic evaluation.MethodsThis was a retrospective descriptive study. Infants were identified from a query of medical records using the ICD-10 code for BRUE (R68.13).ResultsOf 119 infants with BRUE, 23 infants with higher risk BRUE underwent an esophagogastroduodenoscopy and flexible sigmoidoscopy. Apnea (87%) was the most common presentation of BRUE. Most were female (57%) with a mean age at BRUE presentation of 2.73 months. We found 10 (43.5%) term infants and 13 (56.5%) preterm infants in our study. There were no significant differences in characteristics, prenatal, natal, and postnatal risk factors between the infants who underwent endoscopy and those who did not undergo endoscopy. The most common abnormal endoscopic finding was lymphonodular hyperplasia (LNH) associated with eosinophilia in the rectosigmoid colon. The proportion of females in the LNH group was significantly higher than the non-LNH group.ConclusionRectosigmoid LNH and eosinophilia, which are associated with milk soy protein intolerance (MSPI), were the most common findings on endoscopic evaluation. Although there is no proof of causation between MSPI and BRUE, MSPI should be considered in the differential diagnosis for higher risk BRUE.
European Journal of Gastroenterology & Hepatology – Wolters Kluwer Health
Published: Feb 1, 2018
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