Lee DK, et al. - Researchers performed a comparison of the hemodynamic effects of cardiopulmonary resuscitation with an automatic simultaneous sternothoracic cardiopulmonary resuscitation (SST-CPR) device to those with standard CPR (STD-CPR) in cardiac arrest patients. A randomized trial including victims of out-of-hospital cardiac arrest resistant to initial 20 min of CPR after Emergency Department (ED) arrival was performed. Observations suggested that compared to standard CPR, CPR with an automatic SST-CPR device led to higher estimated coronary perfusion pressure in patients with non-traumatic, out-of-hospital cardiac arrest.