A method and system are provided. The method and system sense cardiac events of a heart. The method and system utilizes one or more processors. The processors detect a ventricular fibrillation (VF) episode based on the cardiac events and identify a pace-assisted VF therapy based on the ventricular fibrillation episode. The pace assisted VF therapy includes a burst pacing therapy and a high voltage (HV) shock. The method and system deliver the burst pacing therapy at one or more pacing sites in a coordinated manner before or during the HV shock. The one or more pacing sites includes at least one of a left ventricular (LV) site or a right ventricular (RV) site. The method and system deliver the HV shock along a shocking vector between shocking electrodes.
