Chemotherapy induced cardiomyopathy is a serious adverse effect of anticancer treatments with poor long-term prognosis. In addition to the cumulative dose of anthracycline and trastuzumab, cardiovascular risks have been proven to be the "second hit" when dealing with chemotherapy related cardiomyopathy in breast cancer patients. Speckle-tracking echocardiography have had robust evidence in diagnosis the early stage of left ventricular dysfunction in various types of cancer treated by cardiotoxicity drugs. However, data is still lacking regarding the role of speckle-tracking echocardiography in breast cancer patients with cardiovascular risk
