“…These effects include acute lifethreatening cardiac arrhythmias, myocarditis-pericarditis syndrome, and myocardial infarction. Vasospasm can oc cur in the first hours of therapy to cause ischemia, infarc tion or sudden death, but this is a very uncommon event [ 1,3], After the first day and within the first month, a rare myocarditis-pericarditis syndrome occurs with cumulative doses of 60-180 mg/m2 [4], The majority of patients who develop significant cardiotoxicity due to anthracycline therapy develop a chronic dilated cardiomyopathy [6,7], Doxorubicin-induced cardiomyopathy usually is man ifested by congestive heart failure (CHF) w'hich is caused Tests for Monitoring Doxorubicin-Induced Cardiomyopathy by a reduction in LV ejection fraction (LVEF). CHF is usually dose-related; CHF rarely occurs at cumulative doxorubicin doses below 450 mg/m2, and has an average incidence of 7% at 550 mg/m2, 15% at 600 mg/m2 and 35% at 700 mg/m2 [6], Low dose CHF probably occurs in patients with underlying risk factors.…”