Effectiveness of Video Monitoring and Care Transition for Heart Failure Patients (EVIT-HF): Randomized Clinical Trial

European Self-Care Scale The European self-care scale consists of 12 questions with a single domain related to self-care behavior. Responses to each item range from 1, "I completely agree", to 5, "I completely disagree", following a five-point Likert scale. The total score is obtained by summing all the responses, which can range from 12 to 60. Low values indicate better self-care. The items concern the various self-care behaviors of patients with heart failure, such as checking daily weight (item 1), rest (items 2 and 7), seeking help from the healthcare team (items 3, 4, 5 and 8), fluid restriction (item 6), diet (item 9), medication adherence (item 10), flu vaccination (item 11) and exercise (item 12)

Tilburg Frailty Indicator The Tilburg Frailty Indicator (TFI) is a self-report questionnaire that assesses frailty across three domains: physical (8 items), psychological (4 items), and social (3 items). Total scores range from 0 to 15, with higher scores indicating greater frailty. A total score of ≥ 5 is used to classify individuals as frail.

Number of death of patients with heart failure during the trial

Cardiorespiratory fitness Cardiorespiratory fitness will be assessed by the Veterans Specific Activity Questionnaire (VSAQ), a brief questionnaire that consists of a list of activities presented in a progressive order according to metabolic equivalents (METs). Participants are instructed to determine which activities would cause fatigue, shortness of breath, chest discomfort, or necessity of stopping due to exhaustion if performed for a few minutes. The VSAQ was scored as a whole number (1 to 13 METs) directly from the subject's response. The VSAQ score will be adjusted by age and METs following a regression equation to predict aerobic fitness: METs = 4.7 + 0.97 × VSAQ - 0.06 × age

Quality of life in HF patients The quality of life of patients with HF will be assessed by the Minnesota Living with Heart Failure Questionnaire (MLHFQ), a disease-specific questionnaire for patients with HF, comprising 21 items rated on six-point Likert scales representing different degrees of impact of HF on quality of life, from 0 (none) to 5 (very much). It provides a total score (range 0-105, from best to worst quality of life), as well as scores for two dimensions, physical (8 items, range 0-40) and emotional (5 items, range 0-25). The other eight items (a total of 21) are considered only for the calculation of the total score

Adherence to HF treatment Adherence to HF treatment will be assessed by an instrument with 10 questions related to the use of prescribed medications, daily weight checks, salt intake, water intake and attendance at scheduled appointments and exams. Each question has 3 to 4 alternatives; for questions with 4 alternatives, the score varied from 0 to 4 points, and for questions with 3 alternatives, the score varied from 0 to 3 points. Therefore, the general adherence score could vary from 0 to 26 points. A minimum score of 18 points will be considered a cutoff point for patients adhering to treatment, corresponding to 70% adherence

HF Knowledge Questionnaire The HF knowledge questionnaire consists of 14 questions related to domains such as knowledge of the appropriate diet in HF, knowledge about the amount of fluids ingested and weight control, knowledge about pharmacological and nonpharmacological treatment of HF and general knowledge about the disease. The knowledge score is determined by the sum of the number of correct answers: for the correct question, the patient gains one point, and for each incorrect answer, the patient loses one point. In this way, the score ranges from 0 to 14

Number of hospitalization of patients with heart failure during the trial