臨牀透析 Vol.24 No.4(2-2)


特集名 透析医療における臨床研究の現状と課題
題名 透析合併症 (2) 高血圧症
発刊年月 2008年 04月
著者 西村 眞人 桃仁会病院循環器科
【 要旨 】 透析患者の高血圧については,エビデンスとなる臨床研究に乏しい.現時点の透析患者の降圧目標としては,透析前および非透析時140 / 90 mmHg未満,透析後130 / 80 mmHg未満が妥当である.ただし,透析中に低血圧をきたさないこと,非透析時に起立性低血圧を起こさないことが必要である.血圧測定時期は,透析前後に加えて起床時,眠前,または頭痛・吐き気などの昇圧症状のあるときとする.降圧薬としては,第一にアンジオテンシン受容体桔抗薬,アンジオテンシンI変換酵素阻害薬,カルシウム桔抗薬,第二にα1遮断薬,β遮断薬,第三に中枢性交感神経抑制薬,最後に血管平滑筋に直接作用する血管拡張薬を用いる場合がある.降圧薬の投与に際しては,その透析性,降圧時間,投与時期について,考慮する必要がある.
Theme Current Problem of Clinical Studies in Dialysis Therapy
Title Hypertension of chronic hemodialysis patients
Author Masato Nishimura Cardiovascular Division, Toujinkai Hospital
[ Summary ] Few clinical studies have shown evidence level information regarding hypertension in patients on chronic hemodialysis. The target blood pressure levels for hemodialysis patients should be below 140 / 90 mmHg before dialysis as well as during the interdialysis period, and below 130 / 80 mmHg after dialysis, only when patients have neither intradialytic hypotension nor orthostatic hypotension. Blood pressure should be measured when the patients wake up in the morning, just before sleeping, and when patients have symptoms such as headache or nausea, which may be signs of hypertension, as well as while undergoing dialysis. Antihypertensive agents may be employed. Firstly, angiogenesis receptor blockers may be used along with, angiogenesin converting enzyme inhibitors, or calcium channel blockers. Next, β blockers or α1 blockers may be employed. Central sympatho-inhibitory drugs, and lastly direct vasodilators may be used when patients cannot obtain enough blood pressure control by using the above drugs. When anti-hypertensive agents are prescribed for dialysis patients, consideration must be made for the removal of drugs during dialysis, the durability of anti-hypertensive effects, and the time medications are taken.
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