Six indications that would lead you to suspect SVT in children:

• history incompatible (no history fever, volume loss, hemorrhage or pain
• P waves absent /abnormal
• HR does not vary with activity
• Abrubt rate changes
• Infants : rate usually >220
• Children : rate usually >180

Remember in the stable child treat withe Adenosine 0.1mg/kg rapid IV push followed by rapid flush.

In the unstable child treat with synchronized cardioversion 0.5 -1 Joules/kg.