Clinical Research Directory

Inclusion Criteria: * ≥18 years of age prior to enrollment and anthracycline start date * Diagnosis of breast cancer, lymphoma, or sarcoma with either planned or at 1 year after completion of anthracycline therapy, including patients from 6-12 months and greater than 1 year post-anthracycline exposure. * Patients with a history of persistent atrial fibrillation (afib) that are not in afib remission. Include if the most recent ECG does not show afib. Atrial flutter treated the same Exclusion Criteria: * LVEF \<50% or prior confirmed history of cardiomyopathy, heart failure, left bundle branch block, or paced rhythm * Patients with a history of persistent atrial fibrillation (afib) that are not in afib remission. Include if the most recent ECG does not show afib. Atrial flutter treated the same. * Individuals with pacemakers, defibrillators, or other implanted electronic devices * Inability/unwillingness of individual to give written informed consent