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Using Retinal Imaging to Study Dementia
Published on: November 6, 2017
Dementia and cerebrovascular disease
1Department of Neurology, Mayo Clinic College of Medicine, 200 First St SW, Rochester, MN 55905, USA. knopman@mayo.edu
Insights
Cerebrovascular disease significantly impacts cognitive function and dementia in older adults. This review addresses challenges and emerging consensus in understanding its role and offers a clinical framework.
Area of Science:
- Neurology
- Geriatrics
- Neuroscience
Background:
- Cerebrovascular disease is a major contributor to cognitive impairment and dementia in the elderly.
- Quantifying cerebrovascular disease's impact on cognition and defining vascular dementia remain challenging.
Purpose of the Study:
- To review the challenges and emerging consensus in understanding cerebrovascular disease's role in dementia.
- To propose an operational framework for clinicians managing patients with cognitive disturbances.
Main Methods:
- Review of existing clinical, imaging, epidemiological, and neuropathologic studies.
- Analysis of inconsistencies and emerging consistencies in the field.
Main Results:
- Despite diagnostic challenges, consistencies exist linking cerebrovascular disease to cognitive impairment.
- Clinical and imaging findings can suggest different levels of cerebrovascular disease impact.
- Overlap with Alzheimer disease suggests potential for dual-mechanism therapeutic strategies.
Conclusions:
- Addressing challenges in neuropathologic quantification and clinical definitions is crucial.
- An integrated approach considering clinical, imaging, and pathological data is needed.
- Combined cerebrovascular and Alzheimer disease pathology may be treatable with targeted therapies.
Abstract:
Cerebrovascular disease is an important cause of cognitive Impairment and dementia in elderly patients. This review highlights the challenges involved in examining the role of cerebrovascular disease In dementia, areas in which consensus is emerging, and an operational framework for clinicians. Two important challenges exist. First, there is no accepted neuropathologic scheme for quantitating cerebrovascular disease In cognitive disturbances. Second, agreement on clinical definitions of vascular dementia is incomplete. Despite the barriers posed by these 2 deficiencies, many consistencies in the clinical, imaging, epidemiological, and neuropathologic aspects of cerebrovascular disease and cognitive impairment have been Identified. Different levels of cerebrovascular disease related to cognitive impairment can be suggested on clinical and Imaging grounds. The overlap between cerebrovascular disease and Alzheimer disease produces a disorder that might be amenable to therapeutic approaches based on either mechanism.
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