The Feasibility and Safety of Head-up Cardiopulmonary Resuscitation in Patients With Non-traumatic Cardiac Arrest

Head up CPR with impedance threshold device(ITD) and active compression-decompression (ACD) has been proved to improve both cerebral and coronary perfusion pressure during resuscitation in animal models. Increased rates of Spontaneous Circulation (ROSC) were also observed in cardiac arrest patients. The goal of this clinical trial is to learn about the feasibility and safety of Head-up Cardiopulmonary Resuscitation in patients with non-traumatic cardiac arrest. Participants will be received head-up CPR during resuscitation. The main question it aims to answer is if there is any adverse or unfavorable event during resuscitation.