“… 9 , 10 , 11 , 12 Thus, in-situ simulations provide the possibility to adjust the procedures and rectify errors discovered during in-situ simulations by identifying hazardous and latent safety threats to avoid errors from happening in real situations. 11 , 13 , 14 , 15 , 16 , 17 In this study, we investigate system errors discovered during unannounced in-situ simulated IHCA conducted in four Danish hospitals.…”