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  • Title: Predictive value of esophageal manometry and gastroesophageal pH monitoring for responsiveness of reflux disease to medical therapy in children.
    Author: Cucchiara S, Campanozzi A, Greco L, Franco MT, Emiliano M, Alfieri E, Calabrese F, Numeroso V.
    Journal: Am J Gastroenterol; 1996 Apr; 91(4):680-5. PubMed ID: 8677928.
    Abstract:
    OBJECTIVES: The aim of the study was to evaluate, in 42 children with gastroesophageal reflux disease, the predictive value of both esophageal manometry and gastroesophageal intraluminal pH on the responsiveness of the disease to medical therapy. METHODS: Motility of lower esophageal sphincter and esophageal body was carried out through a perfused pediatric sleeve-probe; prolonged recording of the sphincteric profile was evaluated at the occurrence of reflux episodes as detected by an esophageal electrode; intraluminal pH of the esophagus and stomach was also measured for 24-h through portable equipment. Children were treated for 8 wk with cisapride and ranitidine and were classified as healed or refractory after endoscopy and clinical evaluation. RESULTS: Twenty one children healed, and 21 were refractory. Compared with healed patients, refractory patients showed, at basal evaluation, an increased esophageal acid exposure (p < 0.05), a reduced basal sphincteric pressure and peristalsis amplitude (p < 0.01), an increased rate of sphincteric pressure drifts (p < 0.01), and a higher rate of transient lower esophageal sphincter relaxations (p < 0.01). The following parameters contributed significantly (p < 0.01) to a multivariate discriminant analysis: peristalsis amplitude, basal sphincter pressure, rate of transient relaxations of the sphincter, and rate of sphincteric pressure drifts. A correct classification of virtually all cases (97.62%) was reached. CONCLUSIONS: Motor dysfunctions of both lower esophageal sphincter and esophageal body are the major factors predicting refractoriness of reflux disease in children to a standard medical treatment. Of the two main mechanisms of reflux, i.e., transient lower esophageal sphincter relaxation and lower esophageal sphincter pressure drift, the latter had the highest predictive value for the refractoriness of reflux disease.
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