Background: The incidence of gastroesophageal reflux (GER) has been reported in as many as 50% of healthy term infants and 63% of preterm infants. Anecdotal observations of apnea and bradycardia clustered around feedings or with an episode of vomiting have suggested to clinicians that apnea and bradycardia in preterm infants may be caused by reflux, however, studies have failed to demonstrate even a temporal association between episodes of GER and apnea. One retrospective study concluded that anti-reflux medications did not reduce the frequency of apnea in premature infants. There have been no prospective randomized trials of treatment for GERD in preterm infants with apnea or other symptoms attributed to GER. Despite the lack of evidence supporting a causal relationship between GER and respiratory problems in preterm infants and the lack of data regarding the efficacy or safety of the treatments for GERD, many clinicians continue to believe that GER causes respiratory symptoms in preterm infants and these infants are commonly treated with medications for GERD.