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Measurement of Tissue Oxygenation Using Near-Infrared Spectroscopy in Patients Undergoing Hemodialysis
Published on: October 2, 2020
Does hemodialysis hurt the brain?
Magdalena Madero1, Mark J Sarnak
1Department of Nephrology, Instituto Nacional de Cardiología Ignacio Chávez México City, México. madero.magdalena@gmail.com
Insights
Hemodialysis may contribute to brain abnormalities and cognitive impairment in patients undergoing the procedure. Researchers are exploring mechanisms like blood pressure changes and microembolization to understand this link.
Area of Science:
- Neuroscience
- Nephrology
- Medical Imaging
Background:
- Dialysis patients exhibit high rates of structural brain abnormalities and cognitive deficits.
- The precise causes and interrelations of these neurological issues remain incompletely understood.
Discussion:
- This editorial posits that the hemodialysis procedure itself may induce or exacerbate brain damage.
- Potential mechanisms include rapid blood pressure fluctuations, microembolization, microhemorrhages, and cerebral edema during dialysis.
Key Insights:
- The hemodialysis treatment may be an underrecognized factor contributing to neurological complications in patients.
- Understanding these procedural impacts is crucial for patient neurological health.
Outlook:
- Further research is needed to elucidate the specific pathways through which hemodialysis affects the brain.
- Answering key research questions will guide strategies to mitigate neurological risks in dialysis patients.
Abstract:
Dialysis patients have a high prevalence of both structural brain abnormalities and cognitive impairment. The pathogenesis of the structural brain abnormalities and cognitive impairment as well the relationship between the two is however less clear. In this editorial, we question whether the hemodialysis procedure itself may be partly responsible for the structural abnormalities noted on imaging studies as well as for the cognitive impairment. We invoke several mechanisms whereby the procedure itself may "hurt" the brain including rapid changes in blood pressure, microembolization, microbleeds, and cerebral edema. We then summarize research questions whose answers may help move the field forward.
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