Q: Though clinical judgement prevails, but why it is recommended to continue  intravenous infusion of diltiazem after bolus for control of atrial fibrillation with Rapid Ventricular Response (RVR) rate?


Answer: It is recommended to continue intravenous infusion of diltiazem after bolus for control of atrial fibrillation with Rapid Ventricular Response (RVR) rate because control of the ventricular rate gets lost in about 90 minutes after bolus dose.