Background: One of the most common problems encountered to patients undergoing 
cardiac surgery is bronchial secretions. In order to increase the effectiveness of airway 
clearance, active cycle breathing techniques have been used. Aim: To evaluate the effect of 
active cycle breathing technique on airway clearance among patients underwent cardiac 
surgery Design: A quasi experimental research design. Setting: This study was conducted at 
Cardiothoracic intensive care unit in Assuit Heart University Hospitals, Egypt. Subjects: A 
Purposive sample of 60 adult patients, divided into two equal groups 30 patients each as 
follows; control group and study group. Two tools were used; tool (I) cardiac surgery 
patient's assessment and tool (II) physiological and air way clearance indicators. Results; It 
was clarified that there were significant improvement regarding FVC, FEV1 , SpO2, and 
SaO2 among the patients in study group rather than control groups on the 3rd day post active 
cycle breathing technique ,where P value < 0.05. Conclusions: It was concluded that active 
cycle breathing technique give positive results on improving of spirometric, oxygenic 
parameters of the study group .Recommendations: It was recommended that active cycle 
breathing technique should be regarded as a standard component of care for cardiac surgery
patients and replication of the study on large probability sampling.