IRCT20220102053598N1 IRCT 2023-02-15 Bagheiat-allah University of Medical Sciences An assessment effect of low tidal volume ventilation in on-pump Coronary artery bypass graft surgery on post-operative pulmonary complications. An assessment effect of low tidal volume ventilation in on-pump Coronary artery bypass graft surgery on post-operative pulmonary complications. 2023-04-04 anticipated 60 Complete https://irct.ir/trial/66747 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: After obtaining informed consent from ASA class 1 and 2 CABG candidates, 60 patients were randomly divided into two intervention and control groups of 30. Participants were not aware of their group, Blinding description: After obtaining informed consent from ASA class 1 and 2 CABG candidates, 60 patients were randomly divided into two intervention and control groups of 30. After establishing standard monitoring and IBP and CVP, induction of anesthesia will be done with the same method in patients of both groups. After placing the patient under CPB, patients in the intervention group receive ventilation with a tidal volume (3-4 ml/kg) and a number of 6 to 8 breaths per minute. Patients in the control group do not receive any ventilation according to the hospital routine after undergoing CPB. Kidney (BUN, Cr) and liver (SGOT, SGPT, ALKP) parameters are recorded before surgery and on the first, second and third days after surgery. In addition to laboratory parameters, vital signs, duration of mechanical ventilation in ICU-OH, duration of hospitalization in ICU are recorded by a person who does not know the exposure status of patients. The outcome registrar was not aware of the patient group. After collecting and recording data, they are analyzed using SPSS statistical software. N/A Atherosclerosis of coronary artery bypass graft(s) without angina pectoris. Intervention group: After the patient is placed under CPB, they receive ventilation with a flow volume (3-4 ml/kg) and a number of 6 to 8 breaths per minute.Control group: after placing the patient under CPB, no ventilation will be done according to the usual method, and the patient's lungs will collapse during the pump and will not be ventilated.. 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