text_1: Allogeneic mechanical circulatory support is not as effective as autologous mechanical circulatory support for treating acute myocardial infarction.
text_2: Efficacy assessments included 6-minute walk test, exercise peak VO2, Minnesota Living with Heart Failure Questionnaire (MLHFQ), New York Heart Association class, LV volumes, ejection fraction (EF), early enhancement defect (EED; infarct size), and sphericity index.