Attach and charge the defibrillator while continuing excellent chest compressions.
Stop compressions and assess rhythm (should take no more than 5 seconds).
If VF or VT is present, deliver shock; if non-shockable rhythm is present, resume excellent CPR (and clear the charged defibrillator*).
Resume excellent chest compressions and CPR immediately after the shock is delivered.
Critical point: Interruptions in chest compressions must be kept to a minimum: Do NOT stop compressions while defibrillator is being charged.
*The defibrillator is charged during CPR in anticipation of treating a shockable arrhythmia and to minimize interruptions in CPR. If a non-shockable arrhythmia is present, the charged defibrillator should be discharged into the machine, rather than the defibrillation pads, according to the manufacturer's instructions.