comparison of different ventilation strategies during cardiopulmonary bypass in smoker patients under cardiac surgery

Background: control of pulmonary ventilation during surgery, especially heart surgery, is very important. therefore, in this study, we will compare different ventilation strategies during cardiopulmonary bypass in smokers undergoing cardiac surgery. methods: a total of 42 patients who had a clinical indication for cabg were included in this study. patients were randomly divided into two groups. all patients were operated on by the same surgeon and cardiac anesthesia team in the same condition. the patient data includes age, sex, height, weight, and spirometry indices (fev1, fvc, fev1 / fvc, mmef, pef, pao2, paco2, pao2 / fio2, pao2 / fio2, and pent. t) were recorded prospectively for each patient. results: examines the spirometry indices of patients in the two groups in both pre-procedure and off-pump time, do not show significant changes (p<0.005). conclusion: the use of different ventilation strategies in smokers undergoing cabg surgery could not cause significant changes in patients' respiratory parameters.