Heart Rate Lowering Effects of Medications

Introduction to Heart Rate Lowering Medications

The American Heart Association recommends beta-blockers as first-line agents for heart rate control in atrial fibrillation and other conditions requiring rate control, achieving specified heart rate endpoints in approximately 70% of patients compared with 54% with calcium channel blockers 2
The American College of Cardiology suggests that beta-blockers should be initiated cautiously in patients with heart failure who have reduced ejection fraction 2

Beta-blockers, such as metoprolol, carvedilol, and atenolol, are effective for heart rate control, with a success rate of approximately 70% in achieving specified heart rate endpoints 2
Non-dihydropyridine calcium channel blockers, such as verapamil and diltiazem, decrease heart rate both at rest (by 8-23 beats per minute) and during exercise (by 20-34 beats per minute), but should be used cautiously or avoided in patients with heart failure due to systolic dysfunction 2, 4
Ivabradine, an inhibitor of the "I-funny" or "If" channel, reduces the sinus node pacemaker activity, resulting in slowing of the heart rate, and may be considered in patients with heart failure in sinus rhythm with a resting heart rate ≥70 bpm if symptomatic despite full heart failure treatment 5, 6

The European Society of Cardiology recommends that when heart rate control is needed, beta-blockers, non-dihydropyridine calcium channel blockers, or ivabradine should be considered rather than Imdur or Entresto 2, 3, 5
For patients with heart failure requiring heart rate control, beta-blockers are generally preferred first-line agents, according to the American College of Cardiology 2, 3
In patients with atrial fibrillation and uncontrolled heart rate who cannot tolerate beta-blockers, digoxin may be used, as suggested by the European Journal of Heart Failure 7
The American Heart Association notes that medication selection should be based on the specific clinical scenario, comorbidities, and treatment goals rather than heart rate reduction alone 4