The aim of this study is to evaluate the effect of nurse-led education on patients' self-efficacy levels, self-care behaviors, medication compliance, and diet compliance in individuals diagnosed with heart failure. This study will be conducted as a randomized controlled experimental study.

This study, to be conducted at the Akdeniz University Hospital Cardiology Department and Outpatient Clinic, aims to evaluate the impact of nurse-led education on heart failure patients' self-efficacy, self-care behaviors, and adherence to medication and diet.

Study Population The study sample will comprise heart failure patients aged 18 years and older who are followed in the Cardiology Clinic at Akdeniz University Hospital.

Data Collection Instruments

The following data collection tools will be used in the study:

Patient Information Form: To collect demographic and clinical information. European Heart Failure Self-Care Behavior Scale-12: To assess self-care behaviors specific to heart failure.

General Self-Efficacy Scale: To measure perceived competence in coping with general difficulties.

Beliefs about Medication Adherence Scale: To evaluate patients' beliefs regarding adherence to medication.

Beliefs about Dietary Adherence Scale: To assess patients' beliefs concerning adherence to dietary recommendations.

Permissions for the use of the Turkish adaptations of these scales have been obtained via email from the authors responsible for their respective adaptations.

Intervention Program and Control Group An educational booklet, developed by the researcher based on a review of current research and evidence-based treatment guidelines, will be utilized for the training program, considering the specific needs of the patients.

Intervention Group: Patients in this group will receive a comprehensive educational program:

In-Hospital Individual Training: This will begin with a personalized training session conducted in the hospital, tailored to each patient's unique needs. The content of this session, covering self-efficacy, self-care, and medication and diet compliance, has been developed from an extensive review of up-to-date research and evidence-based treatment guidelines to ensure its effectiveness.

Post-Discharge Telephone Follow-up: After discharge, patients in the intervention group will receive six telephone calls over a three-month period, with two calls scheduled each month. These calls will help reinforce the in-hospital education and provide continuous support.

Control Group: This group will continue to receive routine nursing care and treatment in the Cardiology Clinic, without any additional educational interventions.

Data Collection Schedule

To measure the impact of the intervention, data will be collected twice for both groups:

Baseline: Data will be collected at the beginning of the study. Three Months Later: A second round of data collection will be conducted three months after the initial data collection.

Inclusion Criteria:

• Individuals who have been diagnosed with heart failure in the hospital by a specialist physician,
• Have stable class I-IV heart failure according to the New York Heart Association (NYHA) classification criteria,
• Literate,
• Patients whose clinical condition has stabilized,
• Diabetes and hypertension under control,
• Age 18 and over,
• Have acute and chronic heart failure
• Individuals who accept the study will be included in the study.

Exclusion Criteria:

• Those with a neuromuscular problem,
• Those with serious cognitive problems and psychiatric illnesses,
• Those with physical limitations (such as visual or hearing impairment, orthopedic problems),
• Those under the age of 18,
• Those who are illiterate,
• Those who wish to withdraw from the study at any stage of the study.