Shockable Rhythms (VT/VF)
Biphasic: 150-200 J for the first shock and 150-360 J for subsequent shocks.
Monophasic: 360 J.
Unstable Tachycardia
Synchronised DC Cardioversion is the treatment of choice.
Broad-complex tachycardia or atrial fibrillation: start with 120-150 J biphasic shock (200 J monophasic) & increase power gradually on failure.
Atrial flutter & regular narrow-complex tachycardia: start with 70-120 J biphasic (100 J monophasic).