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Administering trastuzumab after a course of anthracycline therapy for breast cancer can result in cardiac toxicity. Serial echocardiograms in this study showed that a lower initial left ventricular ejection fraction before anthracycline therapy and the amount of decrease in ejection fraction after the anthracycline course are predictive of subsequent trastuzumab cardiac toxicity.
Financial Disclosure: Clinical Cardiology Alert’s Physician Editor Michael H. Crawford, MD, Peer Reviewer Susan Zhao, MD, Nurse Planner Aurelia Macabasco-O’Connell, PhD, ACNP-BC, RN, PHN, FAHA, Editor Jonathan Springston, Editor Jason Schneider, Editorial Group Manager Leslie Coplin, and Accreditations Manager Amy M. Johnson, MSN, RN, CPN, report no financial relationships relevant to this field of study.