What is the recommended treatment for unstable supraventricular tachycardia?

What is the recommended treatment for unstable supraventricular tachycardia?

• A. Cardioversion
• B. Vagal maneuvers
• C. Adenosine infusion
• D. Beta-blockers

Answer: (A)

When a patient with supraventricular tachycardia is unstable, the priority is to rapidly restore effective circulation. Synchronized electrical cardioversion delivers a timed shock that resets the heart rhythm while preserving coordination with the heartbeat, quickly improving perfusion and stabilizing the patient. This approach is favored over medications or vagal maneuvers in unstable cases because it works fast and is reliably effective, whereas pharmacologic or noninvasive methods can delay relief or fail and potentially worsen the situation. In stable, narrow-complex SVT, adenosine, vagal maneuvers, and rate-controlling drugs like beta-blockers might be appropriate, but they’re not appropriate when instability is present. Therefore, immediate synchronized cardioversion is the recommended treatment for unstable SVT.

When a patient with supraventricular tachycardia is unstable, the priority is to rapidly restore effective circulation. Synchronized electrical cardioversion delivers a timed shock that resets the heart rhythm while preserving coordination with the heartbeat, quickly improving perfusion and stabilizing the patient. This approach is favored over medications or vagal maneuvers in unstable cases because it works fast and is reliably effective, whereas pharmacologic or noninvasive methods can delay relief or fail and potentially worsen the situation. In stable, narrow-complex SVT, adenosine, vagal maneuvers, and rate-controlling drugs like beta-blockers might be appropriate, but they’re not appropriate when instability is present. Therefore, immediate synchronized cardioversion is the recommended treatment for unstable SVT.