The present study evaluates the effect of nursing care based on the Self-Care Deficit Nursing Theory on the knowledge and skills related to self-care among adolescents with Cystic Fibrosis.

This study included 30 adolescents who were equally divided into the intervention and control groups. The data were collected by using the Sociodemographic Data Form and the Self-Care Knowledge and Skills Evaluation Forms for Adolescents with Cystic Fibrosis. A total of seven home visits were conducted with the adolescents in the intervention group, during which individualized care plans were applied based on the Self-Care Deficit Nursing Theory. The self-care needs of the adolescents in the control group were identified based on data collected during two home visits conducted at the onset of the study and after 4.5 months.

As a result of the application of nursing interventions based on the Self-Care Deficit Nursing Theory, a statistically significant increase was noted in the self-care knowledge and skills of the adolescents in the intervention group (p<0.05). Additionally, nursing interventions and nursing diagnosis decreased significantly over time in all adolescents in the intervention group (p<0.05).

Orem's Self-Care Deficit Nursing Theory was useful in enhancing the self-care knowledge and skills of adolescents with Cystic Fibrosis.

Inclusion Criteria:

• Diagnosis of Cystic Fibrosis determined by a positive sweat test and/or the presence of two Cystic Fibrosis mutations,
• Aged between 12 and 18 years
• Living in the same Ankara

Exclusion Criteria:

• Adolescents with mental health issues
• Adolescents with an atypical form of Cystic Fibrosis (characterized by an absence of symptoms and no medication requirement)