In managing atrial flutter, which drug would be most appropriate if pressor support is required rather than rate control or rhythm conversion?

In managing atrial flutter, which drug would be most appropriate if pressor support is required rather than rate control or rhythm conversion?

• A. Dopamine
• B. Dexamethasone
• C. Amiodarone
• D. Ibutilide

Answer: (A)

In this scenario the priority is supporting blood pressure and perfusion rather than converting the rhythm or slowing the heart rate. Dopamine acts as a pressor and inotrope: at therapeutic doses it boosts cardiac output via beta-1 effects and raises vascular tone via alpha effects, helping to restore and maintain mean arterial pressure in a patient who needs pressor support. The other options don’t provide that hemodynamic support. Dexamethasone is a steroid with no direct pressor effect; amiodarone and ibutilide are antiarrhythmics aimed at rate or rhythm control and don’t help maintain BP—in fact they can be associated with hypotension in some settings. So dopamine is the best choice when pressor support is required.

In this scenario the priority is supporting blood pressure and perfusion rather than converting the rhythm or slowing the heart rate. Dopamine acts as a pressor and inotrope: at therapeutic doses it boosts cardiac output via beta-1 effects and raises vascular tone via alpha effects, helping to restore and maintain mean arterial pressure in a patient who needs pressor support. The other options don’t provide that hemodynamic support. Dexamethasone is a steroid with no direct pressor effect; amiodarone and ibutilide are antiarrhythmics aimed at rate or rhythm control and don’t help maintain BP—in fact they can be associated with hypotension in some settings. So dopamine is the best choice when pressor support is required.