The Effect of Cardiac Rehabilitation on Left Ventricular Remodeling in Patients Undergoing Primary Percutaneous Coronary Intervention for Acute Myocardial Infarction

"* The cardiac rehabilitation program include supervised exercise training, patient education, and risk factor modification.~* CR starts 1-3 weeks after PCI (based on the patient's general condition) and lasting 12 weeks thereafter.~* Patients will undergo a supervised CR program based on published guidelines (FITT principle). The core will be a moderate-intensity aerobic exercise regimen (e.g. treadmill or cycle ergometer) 2-3 times per week for 12 weeks. Each session will last \~20-60 minutes of exercise followed by cool-down, with intensity gradually increased to High intensity interval training (HIIT) in low-moderate risk individuals. Resistance exercises (e.g. light weights or band exercises) will also be included twice weekly. Exercise dose (frequency, intensity, time) will be tracked. Physical therapists will supervise all sessions in an outpatient CR facility or affiliated gym. Patients' vitals and ECG will be monitored during initial sessions for safety."

Patients will undergo Primary Percutaneous Coronary Intervention (PPCI) within 24 hours of symptom onset for urgent revascularization of the occluded coronary artery.