1 Department of Pediatrics, Baylor College of Medicine, Texas Medical Center, Houston, TX 77030
In Reply.
In our study of polygraphic recordings in infants with unexplained apnea, esophageal pH was monitored continuously uously and all infants were fed standard infant formula approximately every four hours during the polygraphic studies. Orenstein has questioned the absence of gastroesophageal reflux (GER) in 36% of the pH recordings, and has suggested that nonacid feedings may have masked some episodes of GER. Other studies utilizing nonacid feedings during extended esophageal pH monitoring have shown that some normal children do not reflux and that nonacid feeds do not necessarily mask GER.