臨牀透析 Vol.22 No.4(7)


特集名 透析患者の循環器病変 -- 避けられない宿命か?
題名 心不全と「透析心」
発刊年月 2006年 04月
著者 田村 忠司 東京慈恵会医科大学循環器内科
【 要旨 】 透析心は特発性心筋症と同様に,拡張型心筋症様病態や肥大型心筋症様病態を示す症候群である.透析患者において定期的な心エコー検査は透析心の早期発見および体液過剰状態評価に有用である.その診断は除外診断で,著明な単一の尿毒症因子の異常と冠動脈疾患の除外が重要と考えられる.高血圧,貧血,動静脈シャント,二次性副甲状腺機能亢進症などの透析患者特有の多くの因子の適正化と拡張型心筋症様病態においては体重の再評価を施行すべきで,薬物療法もエビデンスは十分でないが,有用な可能性はある.透析患者の心不全の多くを占めると考えられる拡張障害型心不全は,その病態を理解し,透析中の低血圧を避けながら慎重に体重を減少させることが必要である.
Theme Cardiovascular Complications in Chronic Dialysis Patients -- Are They Inevitable?
Title Heart failure and uremic cardiomyopathy
Author Tadashi Tamura Division of Cardiology, Department of Internal Medicine, The Jikei University School of Medicine
[ Summary ] Uremic cardiomyopathy is a syndrome characterized by left ventricular systolic dysfunction and dilatation, or left ventricular hypertrophy, such as that seen in idiopathic cardiomyopathy. In dialysis patients, periodic echocardiography is useful for the early diagnosis of uremic cardiomyopathy and assessment of overhydrated states. Diagnosis is performed by exclusion of excessive abnormalities related to a single uremic factor or coronary artery disease. The adjustment of several uremic factors and reduction of body weight may improve cardiac function in dialysis patients with dilated uremic cardiomyopathy. Some medications may be associated with improvements in left ventricular function, although we do not have much evidence of these effects in dialysis patients. Diastolic dysfunction is most important cause of heart failure. Therefore, we need to understand its mechanism and carefully reduce body weight.
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