Hreinsson JP, et al. - Researchers sought to validate and compare the accuracy of prediction rules for termination of resuscitation (TOR) in out-of-hospital cardiac arrest (OHCA)—the Basic life support (BLS; not witnessed by EMS personnel, no defibrillation nor ROSC before transport), the Advanced life support (ALS; BLS criteria plus not witnessed nor CPR by bystander) and the new rule developed by Jabre et al. (not witnessed by EMS personnel, initial rhythm non-shockable, no sustainable ROSC before third dose of adrenaline). From a population-based, prospectively registered database, they included 568 OHCA patients in validation of TOR rules. The analysis revealed very good accuracy of the BLS and Jabre TOR rules to predict mortality after OHCA; these in combination may be superior to the use of either one.