For a stable wide-complex tachycardia in PALS, which is first-line?

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Multiple Choice

For a stable wide-complex tachycardia in PALS, which is first-line?

When a child has a wide-complex tachycardia and remains hemodynamically stable, treat it as ventricular tachycardia rather than SVT with aberrancy. Vagal maneuvers and adenosine are aimed at narrow QRS tachycardias (SVT) and are not appropriate first-line for a wide-complex rhythm, because they do not reliably terminate VT and adenosine can even cause adverse effects in VT. The preferred first-line approach in a stable pediatric VT is an IV antiarrhythmic, with amiodarone as the go-to option. Typical dosing is 5 mg/kg IV over 20–60 minutes (and it can be repeated or given as an infusion to a total of about 15 mg/kg if needed). Lidocaine is an alternative if amiodarone isn’t available or contraindicated. If the child becomes unstable or does not respond to pharmacologic therapy, you move to synchronized cardioversion at 0.5–1 J/kg (and can escalate to 2 J/kg as needed). Defibrillation is reserved for pulseless VT or VF. So, the key concept is: wide-complex tachycardia in a stable pediatric patient is managed first with an IV antiarrhythmic (amiodarone), not with vagal maneuvers or adenosine.

When a child has a wide-complex tachycardia and remains hemodynamically stable, treat it as ventricular tachycardia rather than SVT with aberrancy. Vagal maneuvers and adenosine are aimed at narrow QRS tachycardias (SVT) and are not appropriate first-line for a wide-complex rhythm, because they do not reliably terminate VT and adenosine can even cause adverse effects in VT.

The preferred first-line approach in a stable pediatric VT is an IV antiarrhythmic, with amiodarone as the go-to option. Typical dosing is 5 mg/kg IV over 20–60 minutes (and it can be repeated or given as an infusion to a total of about 15 mg/kg if needed). Lidocaine is an alternative if amiodarone isn’t available or contraindicated.

If the child becomes unstable or does not respond to pharmacologic therapy, you move to synchronized cardioversion at 0.5–1 J/kg (and can escalate to 2 J/kg as needed). Defibrillation is reserved for pulseless VT or VF.

So, the key concept is: wide-complex tachycardia in a stable pediatric patient is managed first with an IV antiarrhythmic (amiodarone), not with vagal maneuvers or adenosine.

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