IRCT2016050825707N3 IRCT 2017-02-06 Rajaee cardiovascular center effesct of ventilation interventions on the patient's breathing status Compare the effects of respiratory care planning and non-invasive ventilation (CPAP) on the incidence of atelectasis and arterial blood oxygen levels in patients undergoing coronary artery bypass graft 2016-06-04 anticipated 120 Complete https://irct.ir/trial/21451 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention. N/A Atelectasis. Intervention 1: Intervention group 1: 1) use of incentive spirometry for five-minute. 2)Three deep breathing that Contains a deep breath (to three mental count ) and exhale bud lips, and then do two effective cough. 3) Oral care with a solution of mouthwash or brush. 4))Undrestanding to repeat care. 5)movement, including changing position and moving the legs in the form of bicycles run, and by allowing the surgeon out of bed (for sitting on the edge of the bed, walking or Move with wheelchair). 6)The head of the bed elevated controlle at a rate of 45-30 degrees. Intervention 2: Intervention group 2:applied Non-invasive ventilation by mask and with pressure 8-12 cm H2O for 20 minutes according to patient tolerance. Intervention 3: Control group:Routine hospital care.