The clinical features of patients reflux esophagitis without any symptoms have not been clearly demonstrated. This study evaluated the clinical features of patients with endoscopy-positive reflux esophagitis, who did not complain of symptoms, as detected by brief questioning by nursing staffs. Eight thousand and thirty-one patients not taking medication for gastrointestinal disease, were briefly asked about the presence of heartburn, dysphagia, odynophagia and acid regurgitation by nursing staffs before endoscopy for assessment of esophagitis utilizing the Los Angeles Classification. Endoscopically, 1199 (14.9%) patients were classified as positive for reflux esophagitis. The endoscope positive subjects who complain heartburn were 539/1199 (45.0%).The endoscope positive subjects who do not complain symptoms were 465 in 1199 positive reflux esophagitis (38.8%). We compared endoscopic positive subjects without any complain by brief question by nursing staffs to endoscopic positive subjects with heartburn. Male gender, no obesity, absence of hiatus hernia, and low-grade esophagitis were associated with endoscopy-positive patients who do not complain of symptoms. The results of this study indicated correct detection of clinical symptoms of reflux esophagitis might be not easy with brief questioning by nursing staffs before endoscopic examination.

3Key words：chronic hemodialysis patients, decision-making, informed consent, shared decision-making 〈Abstract〉 【Objectives】This presentation describes approaches physicians use to promote active patient participation in decision-making with regard to medical care, and the provision of supportive suggestions about that care. The presentation will also focus on the autonomy preferences of chronic hemodialysis patients（i. e. decision-making and information-seeking preferences）and the factors involved in shared decision-making.【Patients】The sample consists of 107 chronic hemodialysis patients treated as outpatients at S-Hospital and S-Clinic. 【Methods】The study was conducted using a self-administered questionnaire. Decision-making and information-seeking preferences were measured using the Autonomy Preference Index（API). A scale of the shared 原田 孝司 衆和会桜町病院腎臓内科 〒 850

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