INTRODUCTION
The incidence of heart failure (HF) due to chemotherapy-induced cardiomyopathy (CHIC) is increasing and is associated with poor clinical outcomes. Conservative treatment with medications is often difficult, especially in advanced HF 1 2. Ivabradine, a specific If channel inhibitor, lowers the sinus heart rate (HR) without affecting myocardial contractility. It is indicated for controlling HR as a second-line medication after the optimal beta-blocker therapy in patients with chronic HF and reduced ejection fraction 3,4. However, some studies report that ivabradine has a positive effect on the hemodynamics of decompensated HF 5 67 8. Here, we report a case of advanced HF related to CHIC refractory to conventional HF therapy successfully treated with ivabradine.