1Department of Critical Care Rehabilitation, The Affiliated Yantai Yuhuangding Hospital, Qingdao University, Yantai 264000, China 2Department of Geriatric Medicine, The Affiliated Yantai Yuhuangding Hospital, Qingdao University, Yantai 264000, China 3Department of Neurosurgery, Yantaishan Hospital, Yantai 264000, China 4Department of Anesthesiology, The Affiliated Yantai Yuhuangding Hospital, Qingdao University, Yantai 264000, China