Emergency Medical Minute

Episode 971: Calcium Pretreatment for Diltiazem in AFib with RVR

Published: August 25, 2025

Duration: 2:43

Contributor: Taylor Lynch, MD

Educational Pearls:

What is atrial fibrillation with rapid ventricular response (AFib with RVR) and how does it differ from atrial fibrillation (AFib)?

AFib is an abnormal heart rhythm in which the heart has disorganized atrial electrical activity. This causes the atria to quiver with only select signals being conducted through the Atrioventricular (AV) Node to reach the ventricles and result in ventricular contraction. Often described as "irregularly irregular", a patient's EKG will present with no discernible P-waves, and irregular R-R intervals. AFib with RVR is distinguished from AFib when the...