Chest Physiotherapy. (36) is the removal of excess secretions from inside the lungs, by physical means, it is used to assist a cough, re-educate breathing muscle and to try to improve ventilation of the lungs.

- Medications (37): It is very important for the parent to have informations about their child's medications (Appendex 2)

A longitudinal study was carried out in 3 phases.

First Phase: Selection of Dawn syndrome children with congenital heart defects according to the inculcation and exclusion criteria of the study from outpatient cardiology clinic of Naser Heart Institute.

Second Phase: Immediate post-operative care in Cardiology Intensive Care Unit, and application of Cardiac Rehabilitation.

Third Phase: Evaluation of the patient's condition, one, six months, and after one year.

Statistical Analysis: - Assessment of the child condition immediately after operation and then after one month by paired sample statistics, paired sample correlation, by using SPSS.

Results: Patient recruitment 93 patients presented the following characteristics: