This cohort study found increased rates of readmission among patients who survived cardiac arrest.

Early follow-up with health care professionals may enable timely management of both cardiac and general medical conditions and reduce preventable readmissions of cardiac arrest survivors.

Given the high readmission rates and substantial economic burden associated with cardiac arrest, nationwide efforts are necessary to develop strategies designed explicitly for cardiac arrest survivors to reduce preventable readmissions.

Of those readmitted within 30 days, more than half were readmitted within 9 days, especially for noncardiac causes.

There were 251,346 patients who survived the cardiac arrest related index hospitalization. Median (interquartile range) age was 64.8 years, and 106,831 participants (42.5%) were women.

Among cardiac arrest survivors, 49,305 (19.6%) were readmitted within 30 days after discharge.

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