1. The instrument is tested and is in standby state.
2. Confirm the patient's VF/pulseless VT.
3. Expose the skin on the chest. Switch on and select energy.
4. Apply conductive paste to the electrode plate.
5. Charging.
6. The electrode plate is in close contact with the skin.
7. Clear the venue.
8. Discharge defibrillation.
9. Evaluate the patient, CPR.
10. Organize materials and record.
