ĐÁNH GIÁ SỰ THAY ĐỔI BÃO HÒA OXY VÙNG CỦA NÃO BẰNG QUANG PHỔ CẬN HỒNG NGOẠI Ở BỆNH NHÂN PHẪU THUẬT TIM MẠCH

Abstract

Objective: To determine the baseline rSO₂ (regional cerebral oxygen saturation) of cardiovascular surgery patients and evaluate changes in regional cerebral oxygen saturation (rSO₂) at various time points of surgery, assessing the incidence of patient with at least one episode of regional cerebral oxygen desarturation during cardiopulmonary bypass time. Materials and method: Observational study including 66 patients undergoing cardiovascular surgery with cardiopulmonary bypass using near-infrared spectroscopy (NIRS) as monitoring for regional cerebral oxygen starturation (rSO₂). At different time points of  surgery, rSO₂ and related fators were measured. Result: Regional cerebral oxgen saturation increased immediately after anesthesia,  reached the lowest value during cardiopulmonary bypass time (59.02 ± 4.99 % and 58.74 ± 4.84% in the right and the left side respectively), then increased after cardiopulmonary bypass termination and gradually returned to baseline value before transferring to the intensive care unit. The baseline rSO₂ was 65.30 ± 5.45% in the right side and 65.33 ± 6.09% in the left side. The incidence of patient with at least one episode of regional cerebral oxygen desarturation during cardiopulmonary bypass time was 53.03%. Conclusion: The baseline rSO₂ of cardiovascular surgery patient was 65.30 ± 5.45% in the right side and 65.33 ± 6.09% in the left side. Regional cerebral oxygen saturation reached the lowest value during cardiopulmonary bypass time, then increased after cardiopulmonary bypass termination and gradually returned to baseline value before transferring to the intensive care unit.The incidence of patient with at least one episode of cerebral oxygen desarturation during cardiopulmonary bypass time was 53.03%.