After successful conversion from a narrow complex SVT, which medication may be used for rhythm control?

After successful conversion from a narrow complex SVT, which medication may be used for rhythm control?

• A. Adenosine
• B. Vagal Maneuvers
• C. Amiodarone
• D. Digoxin

Answer: (C)

After converting a narrow complex SVT, the goal is to maintain sinus rhythm and prevent recurrences. Amiodarone is a versatile rhythm-control antiarrhythmic that can prevent reentry and other atrial tachyarrhythmias from returning. It acts on multiple channels to prolong the action potential and refractory periods, making it effective for maintaining sinus rhythm in a variety of patients, including those with structural heart disease. Adenosine and vagal maneuvers are used to terminate the tachycardia acutely by slowing AV nodal conduction; they’re not intended for ongoing rhythm control after conversion. Digoxin mainly provides rate control by slowing AV conduction and is not reliable for maintaining sinus rhythm after SVT.

After converting a narrow complex SVT, the goal is to maintain sinus rhythm and prevent recurrences. Amiodarone is a versatile rhythm-control antiarrhythmic that can prevent reentry and other atrial tachyarrhythmias from returning. It acts on multiple channels to prolong the action potential and refractory periods, making it effective for maintaining sinus rhythm in a variety of patients, including those with structural heart disease.

Adenosine and vagal maneuvers are used to terminate the tachycardia acutely by slowing AV nodal conduction; they’re not intended for ongoing rhythm control after conversion. Digoxin mainly provides rate control by slowing AV conduction and is not reliable for maintaining sinus rhythm after SVT.