Impella Outcomes in Acute Myocardial Infarction Versus Non-Acute Myocardial Infarction Cardiogenic Shock: A United States Nationwide Propensity-Matched Analysis (2016-2022).

Using the National Inpatient Sample (2016-2022), we identified adult hospitalizations with cardiogenic shock (ICD-10-CM R57.0) and an Impella procedure code (ICD-10-PCS 5A0221D or 5A0211D), excluding elective admissions, transfers out, postcardiotomy shock, and missing core data.

The final analytic cohort comprised 9866 unweighted Impella-supported CS hospitalizations (7507 acute myocardial infarction-cardiogenic shock; 2359 non-acute myocardial infarction-cardiogenic shock).