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| The Application of Transcranial Doppler Ultrasound in Guiding Intraoperative Individualized Blood Pressure Control in Elderly Patients with Hypertension Grade 2 or Above and Its Effect on Postoperative Cognitive Function |
| ZHANG Xiaoyu, LI Dongxue |
| Department of Anesthesiology, Jilin Cancer Hospital, Changchun 130000, China |
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