Background: An electrocardiogram is a non-invasive test that measures the heart' rhythm and electrical activity. It is
regarded as the 1st diagnostic tool for heart problems. It plays a key role in lowering the risk of morbidity and mortality in
individuals with heart problems . Nurses are in charge of monitoring and interpreting electrocardiograms. Aim: This
study aimed to assess the effectiveness of educational intervention on nurses' knowledge and skills regarding
electrocardiogram. Design: A quasi-experimental design, one group pretest posttest design was used. Methods: Two
tools were utilized, structured interview questionnaire to evaluate knowledge and demographic data of the nurses and
electrocardiogram observational checklist to assess skills in performing ECG procedure. Results: This study clarified
that the effectiveness of the educational intervention regarding ECG is positive and unequivocal. It also shows that there
was good improvement with high significant differences in all phases of the educational intervention in overall main
domains related to nurses knowledge and skills if compared with pre the educational intervention and slightly declined
post 3 months after the educational intervention. Conclusion: Prior to educational intervention, the majority of the nurses
lacked adequate ECG knowledge and skills which improved significally immediately post educational intervention,
While this progress slowed slightly after 3 months at follow up. Recommendations: Ascertain the importance of
ongoing ECG in-service training programs and participation in additional educational sessions to refresh and upgrade
nurses' ECG knowledge and skills.