Hemodialysis Clinical Trial
Official title:
A Prospective Observational Study of the Association Between Cerebral Blood Flow Change and Cognitive Function in Older Maintenance Hemodialysis Patients
The prevalence of cognitive impairment in maintenance hemodialysis (MHD) patients is 3 to 5 times higher than that in ordinary people, so it is essential to find the associated risk factors in this population. This project intends to evaluate whether changes in cerebral blood flow during dialysis have an impact on cognitive function in middle-aged and elderly MHD patients and clarify their influence on brain imaging characteristics. MHD patients who started hemodialysis at 3 to 6 months were selected to examine the difference in middle cerebral artery flow rate before and after dialysis by transcranial Doppler ultrasound to reflect the changes in cerebral blood flow. Changes in the cognitive function scale assessment (memory, executive function, and other five cognitive domains) and brain magnetic resonance imaging examinations are planned to collect both at baseline and after a one-year follow-up. Then the investigator used the multiple linear regression method to analyze the effects of the difference in middle cerebral artery flow on the changes in cognitive function and the characteristics in brain imaging. The investigators anticipate that the characteristics of the influence of changes in cerebral blood flow on cognitive impairment in Chinese MHD patients will be elucidated in this study, which may provide crucial clinical evidence for finding preventive and intervention measures for cognitive impairment in this group of population.
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