Association Between Postresuscitation 12‐Lead ECG Features and Early Mortality After Out‐of‐Hospital Cardiac Arrest: A Post Hoc Subanalysis of the PEACE Study

Background Once the return of spontaneous circulation after out‐of‐hospital cardiac arrest is achieved, a 12‐lead ECG is strongly recommended to identify candidates for urgent coronary angiography. ECG has no apparent role in mortality risk stratification. We aimed to assess whether ECG features could be associated with 30‐day survival in patients with out‐of‐hospital cardiac arrest. Methods and Results All the post‐return of spontaneous circulation ECGs from January 2015 to December 2018 in 3 European centers (Pavia, Lugano, and Vienna) were collected. Prehospital data were collected according to the Utstein style. A total of 370 ECGs were collected: 287 men (77.6%) with a median age of 62 years (interquartile range, 53–70 years). After correction for the return of spontaneous circulation‐to‐ECG time, age >62 years (hazard ratio [HR], 1.78 [95% CI, 1.21–2.61]; P=0.003), female sex (HR, 1.5 [95% CI, 1.05–2.13]; P=0.025), QRS wider than 120 ms (HR, 1.64 [95% CI, 1.43–1.87]; P1 segment (HR, 1.75 [95% CI, 1.59–1.93]; P