Background. Small-molecule tyrosine kinase inhibitors (TKIs) may provide an effective therapeutic option in patients with hematologicmalignanciesandsolidtumors.However,cardiovascular (CV) events, including hypertension, heart failure, left ventricular systolic dysfunction, and QT prolongation, have emerged as potential adverse events (AEs) with TKI therapy. Purpose. We review what is known about the mechanism of action of CV AEs associated with TKI use and discuss therapeutic interventions that may prevent and manage these events in clinical practice. Methods. References for this review were identified through searches of PubMed and Medline databases, and only papers published in English were considered. Search terms included "cardiac," "cardiovascular," "cancer," and "kinase inhibitor." Related links in the databases were reviewed, along with relevant published guidelines.Results. Although the link between rising blood pressure (BP) and CV AEs is observed but not proven, good clinical practice supports an aggressive policy on proper long-term BP management. There are insufficient data from randomized controlled clinical trials to show indisputably that aggressive or effective heart failure therapy in patients receiving TKIs will fundamentally change outcomes; however, clinical practice suggests that this is an effective long-term approach. Recognizing that QT prolongation is associated with TKI use facilitates identification of patients at high risk for this CV AE and increases awareness of the need for routine electrocardiograms and electrolyte monitoring for those receiving TKI treatment. Conclusion. Regular monitoring, early recognition, and appropriate interventions for CV AEs can help more patients derive the benefit of long-term TKI therapy. The Oncologist 2013;18: 900 -908 Implications for Practice: Although the antitumor effects of small-molecule tyrosine kinase inhibitors (TKIs) can be considerable, these agents are often associated with cardiovascular (CV) adverse events (AEs), including hypertension, heart failure, and QT prolongation. This review covers the cardiac risks associated with different TKI therapies, including the putative mechanisms through which TKIs may affect cardiac function, as a means to increase both clinician awareness and understanding of these potential side effects in the oncology setting. This paper also provides clinical strategies for optimizing the use of TKI therapy based on careful pretreatment cardiac risk assessment, early recognition of CV AEs through regular monitoring of electrocardiograms and serum electrolytes, and aggressive management of cardiac events that develop in patients receiving TKI treatment. These guideline-based approaches can facilitate the appropriate use of TKI therapy, thereby allowing patients to experience long-term benefits while minimizing the occurrence of CV AEs.