臨牀透析 Vol.22 No.4(6-1)


特集名 透析患者の循環器病変 -- 避けられない宿命か?
題名 透析患者の弁膜異常 (1) 内科的治療
発刊年月 2006年 04月
著者 大坪 義彦 天神会新古賀病院循環器内科
著者 古賀 伸彦 天神会新古賀病院循環器内科
【 要旨 】 透析患者では心臓弁膜症の頻度が高い.大動脈弁石灰化と僧帽弁輪石灰化が特徴的であり,大動脈弁狭窄症,僧帽弁閉鎖不全症,大動脈弁閉鎖不全症の原因となる.弁石灰化には,高齢,長い透析期間,Ca・Pなどの代謝異常やP吸着薬が関与している.弁膜症の症状は非透析患者のものと同様であるが,進行は速い.診断はおもに心エコー図検査によってなされる.内科的治療は,一般的な心不全治療に加え,透析患者特有の体液貯留や貧血,代謝異常の是正も必要となる.また,感染性心内膜炎の合併が多く,その予後は不良である.
Theme Cardiovascular Complications in Chronic Dialysis Patients -- Are They Inevitable?
Title Valvular heart disease in hemodialysis patients -- internal medicine viewpoint
Author Yoshihiko Otsubo Department of Cardiology, Tenjin-Kai Shin-Koga Hospital
Author Nobuhiko Koga Department of Cardiology, Tenjin-Kai Shin-Koga Hospital
[ Summary ] Valvular heart disease (VHD) occurs more frequency in hemodialysis (HD) patients than in normal subjects. Aortic valve calcification (AVC) and mitral annular calcification (MAC) are characteristic symptoms that occur in HD patients, causing aortic stenosis (AS), mitral regurgitation (MR) and aortic regurgitation (AR). Cardiac valve calcification is associated with a advanced age, long term HD therapy, disturbances in the calcium-phosphate metabolism, and treatment with phosphate binders. The symptoms observed in HD patients are similar to those seen in non-dialysis patients, however, the progression tends to be more rapid. Diagnosis is done mainly with echocardiography. When treating VHD, the control of such dialysis-specific factors as volume overload, anemia, and metabolic disturbances is required, in addition to the administration of general treatment for heart failure. In addition, infective endocarditis (IE) frequently occurs in HD patients and it is often associated with an unfavorable prognosis.
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