Initial Steps to SVT
6-mg rapid IV bolus.
If no result within 1–2 min, 12-mg rapid IV bolus; can repeat 12-mg dose 1 time.
250-500-mcg/kg IV bolus over 1 min.
Then infusion at 50–300 mcg/kg/min, with repeat boluses between each dosing increase
150 mg IV over 10 min.
Then infusion at 1 mg/min (360 mg) over next 6 h; then 0.5 mg/min (540 mg) over remaining 18 h
Unstable patients with SVT and a pulse are always treated with synchronized cardioversion.
Narrow complex and Regular: 50-100J.
If sinus rhythm is not restored following an initial 50 to 100 joule shock, subsequent shocks should be at higher energy levels
Narrow complex and Irregular: 120-200J.