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要旨●ダビガトラン起因性食道炎(DIE)の頻度および特徴を明らかにすることを目的とし,ダビガトラン内服患者の臨床および内視鏡所見を遡及的に検討した.対象110例中21例(19.1%)にDIEを認めた.DIE群の病変部位はすべて中下部食道であり,20例(95.2%)で白色膜様物の付着を認めた.これらはDIEに特徴的な内視鏡所見と考えられた.DIE群は非DIE群(n=89)に比べて,有症状の例が多い傾向がみられたが(61.9% vs. 40.4%),DIE群の8例(38.1%)は無症状であった.他の臨床所見は2群間で差を認めなかった.治療法としては,原因薬剤の中止と酸分泌抑制剤の投与に加え,薬剤停滞を予防するための服薬指導が重要と考えられた.
To examine the prevalence and endoscopic characteristics of DIE(dabigatran-induced esophagitis), we retrospectively reviewed endoscopic database and medical records of 110 patients who used dabigatran and underwent upper gastrointestinal endoscopy. Among the 110 patients, DIE was found in 21(19.1%)patients. Of the 21 patients, 20(95.2%)showed longitudinally sloughing epithelial casts in the mid- and/or lower esophagus, which may be characteristic endoscopic findings of DIE. Symptomatic patients tended to be more frequent in patients with DIE than patients without DIE. Other factors did not differ between the two groups. While discontinuation of dabigatran and administration of proton-pump inhibitor was useful for the treatment of DIE, instructing patients on the appropriate methods for taking dabigatran is important for preventing this disease.
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