It was aimed to evaluate the effect of discharge education and telephone counselling applied to parents of 0-6 years old pediatric cardiac surgery patients on postoperative patient outcomes, quality of life, anxiety, and stress levels of parents.

H0: Discharge education and telephone counselling applied to parents of paediatric cardiac surgery patients has no effect on postoperative patient outcomes (weight gain, tachypnoea/cyanosis/chest pain, increase in activity, complication status), parents' anxiety, stress and quality of life.

H1: Discharge education and telephone counselling applied to parents of paediatric cardiac surgery patients have an effect on postoperative patient outcomes (weight gain, tachypnoea/cyanosis/chest pain, increase in activity, complication status), parents' anxiety, stress and quality of life.

Data Collection:

After the child and his family are informed about the study, their written informed consent will be obtained. According to the randomisation scheme, patients will be divided into experimental and control groups by stratified randomisation method.

The parents of the patients in the study group will get pre-discharge education. The clinic's routine will continue for the children in the control group, and they won't receive any training. The researcher will conduct a telephone consultation to assess the outcomes of the patients in both groups, as well as the parents' quality of life, anxiety, and stress levels.

Inclusion Criteria:

• The child's age ranges from 0 to 6 years old.
• Possessing congenital heart disease
• Planning for pediatric heart surgery
• Receiving inpatient care;
• Receiving a recent diagnosis and beginning therapy
• The parent willingly consents to participate in the study;
• There isn't another child in the family who has CHD.
• Getting the parent's consent on paper

Exclusion Criteria:

• Suffering from another illness
• The child is nearing the end of their life.
• The child and family have expressed a lack of willingness to engage in the study.
• Illiteracy of the parents
• The child and family do not know Turkish