Introduction: Hoarseness, stridor, subglottic and tracheal inflammation have been associated with GER in children. Methods: Extended dual channel esophageal pH monitoring was performed in 10 children with URS. Distal monitoring was performed by the standard procedure and the proximal probe was 5, 7, or 10cm higher. URS included stridor related to laryngomalacia(3) or laryngeal edema(1); persistent inflammation that delayed decannulation(3) or reconstructive surgery(1); hoarseness with laryngeal edema(1); and sturtor due to pharyngeal obstruction(1). Results: Data for proximal esophageal acid exposure were compared to proximal data on patients with and without distal GER. Conclusions: All 10 URS patients had 2 or more criteria, including% of reflux time. 9/10 clinically improved with standard therapy for GER. UGER should be considered as a treatable factor in children with URS.Table

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