CPR for OHCA is rarely successful, and what is “success” anyway?

The analysis by Pun et al. on outcomes of patients who suffered a cardiac arrest at a dialysis unit is certain to generate attention and possibly concern among medical and lay communities. The authors’ discussion of the complex logistic, procedural, and cultural factors that may delay dialysis staff from initiating cardiopulmonary resuscitation (CPR) is insightful. Additionally, the finding that CPR is initiated at lower rates in women than in men uncovers an important disparity. However, as these nuances are explored, studies like these need to be careful about how data are presented, as the implications may have serious consequences regarding the perceived effectiveness of CPR in general.