Impact of permissive hypercapnia on regional cerebral oxygen saturation and postoperative cognitive function in patients undergoing cardiac valve replacement - Zhu, Longchang; Shi, Hongwei; Zhu, Cheng; Liu, Hanyu; Su, Zhonghong; Zhao, Yamei (Annals of Palliative Medicine; Vol 9, No 6 (November 30, 2020): Annals of Palliative Medicine, 2020)