Journal of gastroenterology · 2005
Characteristics of symptomatic GERD in Japanese patients based on 24-h pH monitoring.
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Omura Nobuo, Kashiwagi Hideyuki, Yano Fumiaki, Tsuboi Kazuto, Yanaga Katsuhiko
Аннотация
BACKGROUND: We assessed the characteristics of symptomatic gastroesophageal reflux disease (sGERD), defined as the presence of symptoms, but no endoscopic findings of reflux esophagitis, in Japanese.
METHODS: Sixty-three patients were diagnosed with sGERD, and underwent 24-h esophagogastric pH monitoring (32 men; mean age, 50.5 years). Patients were classified into the following three groups : reflux group (group R), minor reflux group (group MR), and a no-reflux group (group N) by the percentage of time at pH below 4 (group R, 4.0% or more; group MR, 2.0%-3.9%; group N, 0-1.9%). Hiatal hernia was assessed based on the Anatomy-Function-Pathology (AFP) classification, and the shape of the cardia was assessed based on valve factors (V0-V3).
RESULTS: There were 13 patients (21%) in group R, 17 (27%) in group MR, and 33 (52%) in group N. Hiatal hernia was present in 11 patients (85%) in group R, 14 (82%) in group MR, and 22 (67%) in group N. Patients grouped according to presence of V2/V3 (chalasia) accounted for 100% of those in group R, 71% of those in group MR and 70% of those in group N. Hiatal hernia was present in 10 (91%), 10 (83%), and 6 patients (86%) who had 50 or more episodes of esophageal acid reflux per day in group R, group MR, and group N, respectively.
CONCLUSIONS: Reflux (percentage of time below pH 4, 4%) was seen in only about 20% of the patients with sGERD, and this percentage of patients with reflux was lower compared to the data reported from the United States and Europe. The percentage of patients who had a hiatal hernia or chalasia was high in all these groups, and this seemed to be a characteristic cause of sGERD in Japanese.
METHODS: Sixty-three patients were diagnosed with sGERD, and underwent 24-h esophagogastric pH monitoring (32 men; mean age, 50.5 years). Patients were classified into the following three groups : reflux group (group R), minor reflux group (group MR), and a no-reflux group (group N) by the percentage of time at pH below 4 (group R, 4.0% or more; group MR, 2.0%-3.9%; group N, 0-1.9%). Hiatal hernia was assessed based on the Anatomy-Function-Pathology (AFP) classification, and the shape of the cardia was assessed based on valve factors (V0-V3).
RESULTS: There were 13 patients (21%) in group R, 17 (27%) in group MR, and 33 (52%) in group N. Hiatal hernia was present in 11 patients (85%) in group R, 14 (82%) in group MR, and 22 (67%) in group N. Patients grouped according to presence of V2/V3 (chalasia) accounted for 100% of those in group R, 71% of those in group MR and 70% of those in group N. Hiatal hernia was present in 10 (91%), 10 (83%), and 6 patients (86%) who had 50 or more episodes of esophageal acid reflux per day in group R, group MR, and group N, respectively.
CONCLUSIONS: Reflux (percentage of time below pH 4, 4%) was seen in only about 20% of the patients with sGERD, and this percentage of patients with reflux was lower compared to the data reported from the United States and Europe. The percentage of patients who had a hiatal hernia or chalasia was high in all these groups, and this seemed to be a characteristic cause of sGERD in Japanese.