Bilateral Monitoring of Cerebral Oxygenation and Perfusion Basic Parameters during Coronary Bypass Operations with Cardiopulmonary Bypass

O.A. Loskutov, O.M. Druzhyna, I.P. Shlapak, B.M. Todurov


The paper studies the relationship between the values of the basic parameters level of brain saturation and perfusion techniques to optimize perfuzion support during coronary bypass operations with cardiopulmonary bypass. The study included 23 patients with coronary artery disease who underwent isolated coronary artery bypass graft surgery. The study determined a direct correlation between the values of level of brain saturation and heart-lung machine: at lower volume rate of perfusion, there was a proportional decline in level of brain saturation (r = 0.62), and an increase in performance-lung machine led to an increase in these values (r = 0.80). Reduction of mean arterial pressure due to the decrease in vascular resistance peripheral was associated with decreased level of brain saturation (r = 0.59), and an increase in space velocity allowed achieve perfusion of the baseline values. Then, as an increase in blood pressure by increasing peripheral vascular resistance did not lead to a significant enhance of level of brain saturation (lack of correlation relationship, r < 0.3).


cerebral oxygenation; coronary artery bypass surgery; cardiopulmonary bypass


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