the study population consisted of 68 patients and 25 normal subjects , and included 19 cases of chronic renal failure ( crf ) , 17 cases of ischemic heart disease ( ihd ) , 16 cases of hypertension ( ht ) , six cases of hypertrophic cardiomyopathy , two cases of aortic stenosis , two cases of arrhythmias , and six of other cardiac diseases .
C0003811
arrhythmias
C0018799
cardiac