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  • Title: Left ventricular function in uremia: echocardiographic and radionuclide assessment in patients on maintenance hemodialysis.
    Author: Lai KN, Ng J, Whitford J, Buttfield I, Fassett RG, Mathew TH.
    Journal: Clin Nephrol; 1985 Mar; 23(3):125-33. PubMed ID: 3987103.
    Abstract:
    Echocardiography and radionuclide ventriculography were performed in 37 uremic patients on maintenance hemodialysis with no apparent coronary artery disease, pericardial effusion, valvular heart disease or heart failure. These non-invasive studies were performed during the interdialytic period (about 18 hours after a dialysis). Sixty-two percent of our patients had abnormal left ventricular function with one or more abnormal echocardiographic parameters. The significant abnormalities were enlargement of the left ventricular cavity, a reduction of myocardial contractility, and thickening of the left ventricular posterior wall. Similar findings were found in 10 undialyzed uremic patients. Measurement of cardiac index and ejection fraction were found to be inadequate for a full assessment of left ventricular function and other parameters such as the mean velocity of circumferential fiber shortening and mean normalized posterior wall velocity should be included. There is a significant number of hemodialysis patients (7/37) with congestive cardiomyopathic features on the echocardiogram. Their clinical features are no different from the other patients in this study, except they have a significantly higher prevalence of uremic hyperparathyroidism. Our findings support that the existence of a specific uremic cardiomyopathy and uremic hyperparathyroidism may play an important role in the pathogenesis.
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