When should intravenous access and medication be considered during pulseless ventricular tachycardia?

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After beginning CPR and attempting defibrillation,health care workers may begin establishing other therapeutic modalities,such as intravenous access;medication should be considered as well as the insertion of an advanced airway.Ventricular fibrillation and pulseless ventricular tachycardia are managed primarily by defibrillation and CPR and secondarily by pharmacotherapy;conversely,asystole and pulseless electrical activity are not managed by defibrillation and are managed first by CPR only and second by pharmacotherapy as depicted in the algorithms

When Should Intravenous Access and Medication Be Considered During Pulseless