Ivabradine is indicated for which patient with heart failure?

• A. In all heart failure patients regardless of HR
• B. In symptomatic heart failure with preserved ejection fraction
• C. In symptomatic HFrEF with resting heart rate >70 bpm despite GDMT in sinus rhythm
• D. In heart failure with atrial fibrillation

Answer: (C)

Ivabradine is used to reduce heart rate in patients with symptomatic heart failure who have reduced ejection fraction and are in sinus rhythm, with a resting heart rate still elevated despite optimized guideline-directed therapy. By selectively inhibiting the funny current in the sinoatrial node, it lowers heart rate without markedly lowering blood pressure or affecting contractility, which can lessen myocardial oxygen demand and improve diastolic filling time. This helps reduce HF-related symptoms and hospitalizations in the right population.

This option is the best match because it specifies symptomatic HFrEF in sinus rhythm with a resting heart rate above about 70 bpm despite GDMT, aligning with how ivabradine has proven benefit. It’s not indicated in heart failure with preserved ejection fraction, nor in atrial fibrillation (where the rhythm is not a stable sinus rhythm and the SA node–targeted mechanism isn’t effective). It’s also not used universally in all HF patients regardless of heart rate.