Abstract
Aims : To assess the chronic cardiac effects of anthracycline-based chemotherapy regimens on atrial and ventricular diameter, ejection fraction, and valvular abnormalities in relation to cumulative dose in breast cancer patients. Materials and Methods: Breast cancer patients who had received anthracycline-based chemotherapy and radiation therapy were enrolled. All patients had undergone a baseline and follow-up electrocardiogrphy, echocardiography, and clinical cardiac evaluation. Any changes in cardiac parameters were noted. Statistical Analysis Used: Statistical measures used were Chi-square test and independent t-test. Results: A total of 75 breast cancer patients were assessed. Out of these, 56 patients who received cumulative dose of doxorubicin ≥300 mg/m 2 showed increased cardiac dysfunction. Patients with left side breast cancer had greater cardiac abnormalities compared with right side. Conclusion: Cardiac dysfunction was significant with cumulative dose of doxorubicin ≥300 mg/m 2 and also was observed more in left side breast cancer patients.
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