Rohlin O, et al. - Whether there is a difference in 30-day survival among in-hospital cardiac arrest (IHCA) who experience return of spontaneous circulation (ROSC) depending on the duration of cardiopulmonary resuscitation (CPR), was determined. Participants were patients ≥18 years who experienced ROSC after an IHCA at Karolinska University Hospital between 2007 and 2017. Findings revealed that, mostly, resuscitation attempts on IHCA were short and there was a link between duration of CPR and 30-day survival among those with ROSC. Still, in post-resuscitation care, the use of CPR duration as a prognostic marker was questioned considering the observed 30-day survival that was high enough. Ideal duration of resuscitation should remain a bedside decision taking into consideration the whole clinical picture.