Atrial fibrillation (AF) is a common heart rhythm disorder in the U.S. that affects millions, and it can lead to serious complications like rapid ventricular response (RVR).
An umbrella review of existing systematic reviews found IV diltiazem was more effective than IV metoprolol for controlling heart rate and reducing ventricular rates in patients experiencing AF with RVR.
However, the use of IV diltiazem was also associated with a higher risk of hypotension, indicating the need for further research to evaluate the balance between efficacy and safety for these treatments.