Figure 2. Post Hoc Analysis, Primary Outcome According to Subgroups in a Study of Intra-arrest Transport, Extracorporeal Cardiopulmonary Resuscitation, and Immediate Invasive Assessment and Treatment in Refractory Out-of-Hospital Cardiac Arrest.

ACS indicates acute coronary syndrome; CAD, coronary artery disease; CHF, chronic heart failure; CPR, cardiopulmonary resuscitation; EMS, emergency medical service; OR, odds ratio; ROSC, return of spontaneous circulation.

^aFor pH and lactate level, the first values after admission are used.