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PEDIATRICS Vol. 113 No. 2 February 2004, pp. e128-e132

ELECTRONIC ARTICLE

Gastroesophageal Reflux: A Critical Review of Its Role in Preterm Infants

Christian F. Poets, MD

From the Department of Neonatology, University of Tuebingen, Tuebingen, Germany

There is widespread concern about gastroesophageal reflux (GER) in preterm infants. This article reviews the evidence for this concern. GER is common in infants, which is related to their large fluid intake (corresponding to 14 L/day in an adult) and supine body position, resulting in the gastroesophageal junction’s being constantly "under water." pH monitoring, the standard for reflux detection, is of limited use in preterm infants whose gastric pH is >4 for 90% of the time. New methods such as the multiple intraluminal impedance technique and micromanometric catheters may be promising alternatives but require careful evaluation before applying them to clinical practice. A critical review of the evidence for potential sequelae of GER in preterm infants shows that 1) apnea is unrelated to GER in most infants, 2) failure to thrive practically does not occur with GER, and 3) a relationship between GER and chronic airway problems has not yet been confirmed in preterm infants. Thus, there is currently insufficient evidence to justify the apparently widespread practice of treating GER in infants with symptoms such as recurrent apnea or regurgitation or of prolonging their hospital stay, unless there is unequivocal evidence of complications, eg, recurrent aspiration or cyanosis during vomiting. Objective criteria that help to identify those presumably few infants who do require treatment for GER disease are urgently needed.

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Key Words: lower esophageal sphincter • regurgitation • treatment indications

Abbreviations: GER, gastroesophageal reflux • CMA, cow milk protein allergy • TLESR, transient lower esophageal sphincter relaxation • GERD, gastroesophageal reflux disease • MII, multiple intraluminal impedance • AOP, apnea of prematurity • NICU, neonatal intensive care unit

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Received for publication Aug 8, 2003; Accepted Oct 6, 2003.

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