CABG-AI-Supported Discharge Education

Inclusion Criteria: * Patients who have undergone coronary artery bypass graft (CABG) surgery. * Age 18 years or older. * Hemodynamically stable at the time of enrollment. * Able to understand and communicate in Turkish. * Able to use or have access to a mobile phone capable of viewing the educational video. * Able to provide informed consent. * Scheduled for routine postoperative follow-up at the study hospital. Exclusion Criteria: * Patients undergoing emergency CABG surgery. * Presence of severe cognitive impairment that prevents understanding or following instructions. * Diagnosed psychiatric disorders (e.g., schizophrenia, severe depression) that interfere with study participation. * Severe vision or hearing impairment that prevents receiving the education. * Presence of postoperative complications requiring intensive care readmission. * Patients with endocrine disorders affecting stress biomarkers (e.g., Cushing's syndrome, Addison's disease). * Chronic use of corticosteroids or medications that significantly alter cortisol levels. * Patients who decline to participate or withdraw consent. * Patients who are unable to complete follow-up assessments.