Low preoperative regional cerebral oxygen saturation in hemodialysis patients.

HD showed a strong association with low preoperative rSO2 values in patients undergoing coronary artery bypass graft surgery, even after adjusting for known factors that affect rSO2 values, including age, hemoglobin concentration, and cardiac systolic function. Further research is required to elucidate the mechanisms decreasing rSO2 values in HD patients.