Background: Cardiac catheterization is an invasive technique to examine how well your heart is working and is used to
diagnose and treat some congenital heart problems. Aim: The aim was to evaluate the effect of guiding program on
mothers' knowledge, reported practices, and their self-efficacy about care of their children undergoing cardiac
catheterization. Method: Quasi-experimental research design (One-group pre and post-test) in Pediatric Cardiology
Department and Cardiac Catheter Unit, affiliated to Mansoura University Children's Hospital, with 60 mothers and their
children. Tools of data collection: tool 1: Structured Interview questionnaire sheet and tool 2: General Self-efficacy
Questionnaire (GSQ) Results: the mothers under the study had good knowledge regarding cardiac catheterization before
and after the guiding program. Also, the mothers reported satisfactory practices after implementing the guiding program,
with statistically significant differences. Moreover, there was an increase in mothers' self-efficacy after conducting the
guiding program than before. Conclusion: The cardiac catheterization guiding program was successful for raising
mothers' knowledge, reported practices, and self-efficacy about care of their children getting cardiac catheterization.
Recommendations: Organize continuous teaching sessions for mothers of children undergoing cardiac catheterization at
inpatient and outpatient cardiology unit.