Tonna JE, Selzman CH, Girotra S, et al. - Via performing an observational analysis of adult inpatient cardiac arrests in the United States from 2000 to 2018 reported to the American Heart Association's Get With The Guidelines—Resuscitation registry restricted to hospitals that provided extracorporeal cardiopulmonary resuscitation (ECPR), researchers sought to determine the correlation between individual patient and hospital characteristics and the probability of ECPR use. From 2000 to 2018, they identified reports of 129,736 patients who had a cardiac arrest in 224 hospitals that offered ECPR. Treatment with ECPR was reported in less than 1% of in‐hospital cardiac arrest patients. ECPR use is noted to be affected by patient age, comorbidities, and hospital system factors. Use of ECPR was reported in correlation with younger age, no preexisting comorbidities or cardiac‐specific comorbidities (congestive heart failure, prior myocardial infarction, or current myocardial infarction), and in locations of procedural areas at the times of cardiac arrest. Decrease in ECPR was observed after hours (3–11 pm [RR, 0.8; 95% CI, 0.7–1.0] and 11 pm–7 am [RR, 0.6; 95% CI, 0.5–0.7]) and on weekends (RR, 0.7; 95% CI, 0.6–0.9).