PURPOSE: Gastroesophageal reflux (GER) has long been associated with pulmonary symptoms and diseases. This retrospective analysis was undertaken to determine the prevalence of GER detected by gastroesophageal scintigraphy in children with recurrent lower respiratory tract infections but none of the typical gastroesophageal symptoms of GER. MATERIALS AND METHODS: A total of 312 children (mean age, 2.36 years; age range, 4 months to 11 years) were evaluated. All studies were performed using Tc-99m sulfur colloid (3.7 to 7.4 MBq; 100 to 200 microCi). RESULTS: Of 312 children, 108 (34.6%) had GER on gastroesophageal scintigraphy. The children were separated into four groups, depending on their age. Group 1 (119 children, younger than 1 year), group 2 (131 children, ages 1 to 3 years), group 3 (36 children, ages 3 to 6 years), and group 4 (26 children, ages 6 to 12 years) showed silent GER with prevalences of 38.7%, 37.4%, 22.2%, and 19.2%, respectively. Because physiologic GER is common in children younger than 18 months, we also analyzed the prevalence of GER in children younger than 18 months and older than 18 months of age. The prevalences of GER in these groups were 41.7% and 24.6%, respectively. CONCLUSIONS: A significant number of children with recurrent lower respiratory tract infection have scintigraphic evidence of GER. This high prevalence, even in children older than 18 months, cannot be ignored. Prospective studies including many patients are needed to establish the exact role of GER in these patients.
PURPOSE:Gastroesophageal reflux (GER) has long been associated with pulmonary symptoms and diseases. This retrospective analysis was undertaken to determine the prevalence of GER detected by gastroesophageal scintigraphy in children with recurrent lower respiratory tract infections but none of the typical gastroesophageal symptoms of GER. MATERIALS AND METHODS: A total of 312 children (mean age, 2.36 years; age range, 4 months to 11 years) were evaluated. All studies were performed using Tc-99m sulfur colloid (3.7 to 7.4 MBq; 100 to 200 microCi). RESULTS: Of 312 children, 108 (34.6%) had GER on gastroesophageal scintigraphy. The children were separated into four groups, depending on their age. Group 1 (119 children, younger than 1 year), group 2 (131 children, ages 1 to 3 years), group 3 (36 children, ages 3 to 6 years), and group 4 (26 children, ages 6 to 12 years) showed silent GER with prevalences of 38.7%, 37.4%, 22.2%, and 19.2%, respectively. Because physiologic GER is common in children younger than 18 months, we also analyzed the prevalence of GER in children younger than 18 months and older than 18 months of age. The prevalences of GER in these groups were 41.7% and 24.6%, respectively. CONCLUSIONS: A significant number of children with recurrent lower respiratory tract infection have scintigraphic evidence of GER. This high prevalence, even in children older than 18 months, cannot be ignored. Prospective studies including many patients are needed to establish the exact role of GER in these patients.