SS: So we know if you do nothing to someone who has cardiac arrest for 4-5mins you almost inevitably get irreparable brain damage, if during that 3-5mins you have bystander resuscitation the onset of permanent brain damage is delayed somewhat and slowed down.

SS: So we know if you do nothing to someone who has cardiac arrest for 4-5mins you almost inevitably get irreparable brain damage, if during that 3-5mins you have bystander resuscitation the onset of permanent brain damage is delayed somewhat and slowed down.