SVT with aberrant conduction may respond to which medication?

Prepare for the Emergency Nursing Orientation 3.0 Cardiovascular Emergencies Test. Use interactive flashcards and detailed explanations with multiple choice questions. Enhance your understanding of cardiovascular emergencies and succeed on your exam!

Multiple Choice

SVT with aberrant conduction may respond to which medication?

Adenosine is best because this tachycardia type relies on conduction through the AV node. Adenosine briefly blocks AV nodal conduction, which interrupts the reentrant circuit driving the SVT and usually restores normal rhythm. Its ultra-short action makes it ideal for an acute, hemodynamically stable SVT with aberrant conduction, allowing rapid termination with minimal long-lasting effects. Other drugs either don’t target the AV node in the same targeted, rapid way or are intended for different arrhythmias: amiodarone has broader, slower effects and is more commonly used for stable VT or AF with rapid response; lidocaine is mainly for ventricular arrhythmias; magnesium sulfate is used for torsades de pointes or refractory VT, not typical AV-nodal–dependent SVT.

Adenosine is best because this tachycardia type relies on conduction through the AV node. Adenosine briefly blocks AV nodal conduction, which interrupts the reentrant circuit driving the SVT and usually restores normal rhythm. Its ultra-short action makes it ideal for an acute, hemodynamically stable SVT with aberrant conduction, allowing rapid termination with minimal long-lasting effects.

Other drugs either don’t target the AV node in the same targeted, rapid way or are intended for different arrhythmias: amiodarone has broader, slower effects and is more commonly used for stable VT or AF with rapid response; lidocaine is mainly for ventricular arrhythmias; magnesium sulfate is used for torsades de pointes or refractory VT, not typical AV-nodal–dependent SVT.

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