Effects of the hospital-community-family trinity cardiac rehabilitation on patients with acute myocardial infarction after percutaneous coronary intervention: A randomized trial.

The study was done in one hospital and a small number of communities in China, so the model may not transfer to other settings. Participants had first PCI, Killip class <=III, LVEF >=40%, and adequate understanding and communication, so patients outside those limits were not studied. The intervention was complex and bundled many components, so the study cannot show which component produced the gains. Staff carried out training and follow-up during rest periods, and caregiver coordination was not always ideal, which may limit real-world sustainability. The paper says participants knew their assigned numbers but not grouping criteria, and data collectors lacked clarity about allocation specifics; it does not say clinicians or participants were blinded.

No funding was declared, and the authors declared no competing interests.

Do not assume the benefit came from exercise alone. The intervention bundled hospital CR files, community clinics, monthly education, caregiver training, WeChat or health platform communication, and hospital follow-up, and the study did not test which parts caused the improvements.