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Can progressive and non-progressive behavioural variant frontotemporal dementia be distinguished at presentation?
M Hornberger1, B P Shelley, C M Kipps
1Prince of Wales Medical Research Institute, University of New South Wales, Sydney, Australia.
Journal of Neurology, Neurosurgery, and Psychiatry
|February 21, 2009
Summary
Distinguishing progressive from non-progressive behavioural variant frontotemporal dementia (bv-FTD) is challenging. Early cognitive and daily living assessments may help differentiate patient groups.
Area of Science:
- Neuroscience
- Clinical Neurology
- Dementia Research
Background:
- Behavioural variant frontotemporal dementia (bv-FTD) exhibits variable progression.
- Patients can be categorized as progressive or non-progressive.
- Early clinical features are investigated for discriminatory power.
Purpose of the Study:
- To determine if initial clinical presentations differentiate progressive from non-progressive bv-FTD.
- To identify key features that distinguish between bv-FTD progression subtypes.
Main Methods:
- Analysis of archival data from 71 bv-FTD patients (45 progressive, 26 non-progressive).
- Inclusion of patients with over 3 years of follow-up.
- Utilized clinical data from the Early Onset Dementia Clinic, Cambridge.
Main Results:
- Presenting clinical features showed limited ability to distinguish subgroups.
- General cognitive assessments (Addenbrooke's Cognitive Examination-revised) were distinguishing.
- Specific features like distractibility, stereotypic speech, impaired activities of daily living (ADLs), and depression aided differentiation.
Conclusions:
- Current diagnostic criteria for FTD struggle to differentiate progressive from non-progressive bv-FTD.
- A combination of general cognition, executive function, and ADL measures shows promise for distinguishing subtypes.
- Further research into these discriminators is warranted for improved patient stratification.
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