Mejora de la Asistencia a la Rehabilitación Cardíaca Tras un Infarto de Miocardio Secundario Mediante Mensajes Clínicos y Llamadas Motivacionales (ATTEND-CR)

Participants clinicians receive an informational message about cardiac rehabilitation and the cardiac rehabilitation referral process. Participants who are referred to cardiac rehabilitation receive a phone call post-discharge applying principles of motivational interviewing. The goal is to encourage cardiac rehabilitation attendance.

The inpatient clinical team receives an EPIC in-basket and email detailing the patient's study participation, benefits of cardiac rehabilitation, and guidance on how to place a cardiac referral if appropriate.

If a cardiac rehabilitation referral is not placed within 3 days post-discharge, a follow-up message is sent to one of the patient's outpatient clinician within 4-28 days post-discharge and within 140 days of randomization.

Participants receive a phone call applying motivational interviewing principles if a cardiac rehabilitation referral has been placed by their clinical team within 56 days post-discharge and within 140 days of randomization.

The phone call aims to discuss cardiac rehabilitation, barriers to participation, and support engagement in cardiac rehabilitation.

Participants receive standard post-MI care without clinician informative messaging or a motivational interviewing phone call from the study team. They may still be referred to and attend CR based on usual clinical practice.

Attendance at one or more cardiac rehabilitation exercise session

Referral to a cardiac rehabilitation program

Completion defined as attendance at ≥12 cardiac rehabilitation exercise sessions

1. Recruitment: Proportion of eligible patients randomized; threshold ≥40%.
2. Retention: Proportion completing interim or final follow-up; threshold ≥70%.

All-cause mortality

All-cause hospitalization

Composite of all-cause mortality, recurrent MI, unstable angina, stroke, TIA, or heart failure hospitalization

Self-rated health using the EuroQol 5-Dimension 5-Level (EQ-5D-5L) Visual Analog Scale (VAS) ranging from 0 to 100, where 0 represents the worst imaginable health state and 100 represents the best imaginable health state. Higher scores indicate better perceived health

Angina-related health status measured using the Seattle Angina Questionnaire-7 (SAQ-7), a validated 7-item instrument assessing three domains: physical limitation, angina frequency, and quality of life. Scores are transformed to a 0-100 scale, where higher scores indicate better health status (fewer angina symptoms and less functional limitation).

Frailty status measured using the FRAIL Scale, a 5-item questionnaire assessing Fatigue, Resistance, Ambulation, Illnesses, and Loss of weight. Scores range from 0 to 5, with 0 indicating robust, 1-2 indicating prefrail, and 3-5 indicating frail. Higher scores indicate greater frailty (worse health status).

Physical function measured using the PROMIS (Patient-Reported Outcomes Measurement Information System) Physical Function Short Form 10a (PROMIS PF 10a). Raw scores are converted to T-scores with a mean of 50 and standard deviation of 10, based on the U.S. general population. Higher scores indicate better physical function.

Fatigue measured using the PROMIS (Patient-Reported Outcomes Measurement Information System) Fatigue Short Form 4a (PROMIS Fatigue 4a). Raw scores are converted to T-scores with a mean of 50 and standard deviation of 10, based on the U.S. general population. Higher scores indicate greater fatigue (worse outcome).

Depression measured using the PROMIS (Patient-Reported Outcomes Measurement Information System) Depression Short Form 4a (PROMIS Depression 4a). Raw scores are converted to T-scores with a mean of 50 and standard deviation of 10, based on the U.S. general population. Higher scores indicate greater depressive symptoms (worse outcome).

Dyspnea measured using the Rose Dyspnea Scale, a scale assessing shortness of breath. Scores range from 0 (no dyspnea) to 4 (dyspnea on minimal exertion or at rest). Higher scores indicate more severe dyspnea (worse outcome).

Currently/actively smoking.

Aspirin use assessed via self-report and/or medication records at follow-up

Statin use assessed via self-report and/or medication records at follow-up.

These include:

• Major cardiovascular/cerebrovascular events (MI, unstable angina, stroke/TIA, death)
• Clinically significant arrhythmia requiring medical treatment
• Hemodynamic instability (exercise induced hypotension requiring medical treatment other than oral hydration, hypertensive emergency requiring medical treatment, syncope)
• Acute decompensated heart failure
• Exercise-related injuries or complications (falls resulting in injury requiring medical attention or treatment, non-fall exercise related injuries requiring medical attention or treatment, hypoglycemia requiring medical treatment, hypoxia (non-HF related) requiring medical treatment.