臨牀消化器内科 Vol.14 No.12(1-2)


特集名 薬物治療をめぐるControversy --上部消化管
題名 GERDの治療は (2) Step-up
発刊年月 1999年 11月
著者 関口 利和 関口医院内科
【 要旨 】 GERDの治療戦略としてのstep-up療法は,古典的なものであるが,基本概念はGERを阻止するというGERDの病態を改善するものである.まず,日常生活習慣の改善や食事療法に始まり,次いで制酸剤や粘膜保護剤,消化管運動機能改善剤を投与する.そこで改善しないものは,H2拮抗薬を8~12週投与し,これでも改善しない場合はPPIを投与する.治療法としては合理的で無駄のないもので,しかも初期の段階で軽症は治療することができる.
わが国は軽症GERDが多く,H2拮抗薬でも60~70%治癒が望める.また医療は保険制度に立脚し,PPIは高価で使用期間が制限されている.さらに医療保険の財源は窮乏し破綻寸前である.よってGERDの治療においても無駄な出費を軽減し,合理的な治療が望まれる.step-down療法では不必要なGERDにもPPIを投与することになり,step-up療法はPPIの不可欠なGERDを合理的かつ廉価で抽出し治療できるので,現状ではstep-upを推奨する.
Theme Controversies in the Drug Therapy of Upper Gastrointestinal Tract Disorders
Title Medical Approaches to GERD -- Step-up Therapy
Author Toshikazu Sekiguchi Department of Internal Medicine, Sekiguchi Clinic
[ Summary ] Step-up therapy as a treatment strategy for GERD is a classical approach, based on the concept of improving the pathophysiology of GERD by inhibiting GER. The therapy starts with improvements in life style and diet, followed by administration of antacids, mucosal protectants and prokinetics. If this does not achieve improvements in the patient's condition H2RA is administered for 8 to 12 weeks and, if this treatment is still unsuccessful, PPIs are administered. As a therapy, this is a rational and economical approach. Moreover, mild GERD can be treated with this methed. In Japan, there are many cases of mild GERD, in which H2RA treatment can achieve a rate of 60 to 70% successful results. In addition, health care in this country is based on a national insurance system, under which expensive PPI treatment is restricted for these treatment periods. Furthemore, health care insurance fund is in financial difficulty and facing imminent bankruptcy. Accordingly, rational treatment with minimized unnecessary cost is expected in the care of GERD, also. Step-down therapy requires the use of PPIs, even in GERD patients who do not need it, while in step-up therapy, PPIs can be used on a rational basis and also economically by screening GERD patients in whom PPIs are essential. Therefore, under the current circumstances, I recommend Step-up therapy.
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