Jung E, Hong KJ, Shin SD, et al. - Researchers herein examined differences, if any, in the effect of post–cardiac arrest (PCA) care including coronary reperfusion therapy (CRT) or targeted temperature management (TTM) according to prehospital mechanical chest compression device (MCD) use in patients with out-of-hospital cardiac arrest (OHCA). From the Korean nationwide OHCA registry, they enrolled a total of 4,366 OHCA cases. Outcomes revealed different effects of PCA care on neurologic outcomes according to MCD use in OHCA. The prehospital MCD use group did not exhibit the correlation of good neurologic outcome and PCA care when compared with the MCD nonuse group.