Development and Improvement of Home Rehabilitation Scheme for Preschool Children With Congenital Heart Disease After Operation

Children With Congenital Heart Disease After Surgery Inclusion Criteria: * Age 3 to 7 years * Clinical diagnosis of congenital heart disease * Underwent a single open-heart surgical correction under direct vision at the study site * Ability to communicate in Chinese Exclusion Criteria: * Postoperative arrhythmia * Comorbid neurological, respiratory, or other systemic diseases * Deemed unsuitable for exercise by a physician * Cardiac function classified as NYHA Class IV * Intellectual, language, or motor impairments resulting from perioperative complications or other causes Caregivers of Children With Congenital Heart Disease After Surgery Inclusion Criteria: * Primary caregiver who voluntarily provides care * Caregiver who spends the most time with the child * Ability to communicate in Chinese Exclusion Criteria: * Caregivers of children who voluntarily discontinued treatment before completion * Paid or professional caregivers * Diagnosed cognitive impairment or mental illness * Inability to communicate effectively through spoken language * Presence of serious conflict or instability in the caregiver-child relationship * Inability to independently operate or use smart electronic devices and the internet Medical Professionals Involved in Congenital Heart Disease Care Inclusion Criteria: * Licensed healthcare professionals, including physicians, nurses, dietitians, physical therapists, or psychological counselors * At least 5 years of professional experience in congenital heart disease care, rehabilitation, or education Exclusion Criteria: * Not currently engaged in frontline clinical work * Not engaged in clinical work within the past year due to leave, study, or reassignment