IRCT20200602047642N1 IRCT 2020-09-07 Shahid Rajaei Heart Hospital, Tehran Clinical outcome of Pulsatile flow Determination and comparison of the effect of 30 and 70 pulses in pulsatile cardiopulmonary bypass on clinical outcome of patients undergoing Coronary Artery Bypass Graft (CABG) surgery 2020-06-23 anticipated 90 Complete https://irct.ir/trial/49062 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Supportive, Randomization description: Allocation of individuals to study groups (interventions and controls) was performed by randomized block method using 6 blocks. This was done with the relevant software by Master of Statistics. In each block there are 2 people related to the control group, 2 people related to the A intervention group and 2 people related to the B group, whose order was random and the blocks were selected using the table of random numbers, Blinding description: Patients are given explanations about the study and the three groups to be studied, and then they are asked to enter the study, but they are not told which group they are studying. N/A Atherosclerotic heart disease. Intervention 1: First intervention group: In the heart and lung pump machine, the pulse flow settings are as follows: Pulse number: 30, base flute: 30%, pulse width: 40%. After the pump starts and immediately after the aortic clamp, the pulsating current will start, and after removing the clamp, the aorta will end and the pump will continue with the continuous flow. Intervention 2: Second intervention group: In the heart and lung pump machine, the pulse flow settings are as follows: Pulse number: 70, base flute: 30%, pulse width: 40%. After the pump starts and immediately after the aortic clamp, the pulsating current will start and after removing the clamp the aorta will end and the pump will continue with the continuous flow. Intervention 3: Control group: Patients in this group are only subjected to a continuous flow, which by default is set in the pump machine, and no other adjustments are made. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is There is no further information