Document Detail


Does blood pressure lowering treatment prevents dementia or cognitive decline in patients with cardiovascular and cerebrovascular disease?
MedLine Citation:
PMID:  15760634     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
There is increasing evidence that both hypertension and stroke play important roles in the development of cognitive decline and dementia. Despite five high-quality randomised controlled trials (RCTs) in this area to date, there remains uncertainty about the role of blood pressure lowering therapy in the prevention of cognitive decline and dementia. It appears that lack of definitive results from these trials can be explained on the basis of (a) insufficient power to detect modest treatment effects; (b) measurement error in the diagnosis of dementia; (c) variations in the treatment effects between different types of antihypertensive agents; and (d) bias due to missing data, variation in baseline factors such as levels of blood pressure, and the inclusion of patients with cognitive impairment at entry. Preliminary meta-analysis of RCTs supports the hypothesis that blood pressure lowering may prevent dementia in high-risk patients, that is those with vascular disease. However, a meta-analysis of individual patient data (IPD) from these, and other relevant trials in patients with vascular disease, would provide much more reliable data. If the hypothesis were confirmed, it would certainly be of considerable importance not only in terms of our understanding of the aetiology of dementia, but also in promoting blood pressure lowering strategies for broader public health good.
Authors:
Valery Feigin; Yogini Ratnasabapathy; Craig Anderson
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Publication Detail:
Type:  Journal Article; Meta-Analysis     Date:  2005-01-07
Journal Detail:
Title:  Journal of the neurological sciences     Volume:  229-230     ISSN:  0022-510X     ISO Abbreviation:  J. Neurol. Sci.     Publication Date:  2005 Mar 
Date Detail:
Created Date:  2005-03-11     Completed Date:  2005-05-03     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0375403     Medline TA:  J Neurol Sci     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  151-5     Citation Subset:  IM    
Affiliation:
Clinical Trials Research Unit, University of Auckland, Private Bag 92019, Auckland, New Zealand. v.feigin@ctru.auckland.ac.nz
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MeSH Terms
Descriptor/Qualifier:
Aged
Aged, 80 and over
Antihypertensive Agents / therapeutic use*
Cardiovascular Diseases / drug therapy*,  psychology*
Cerebrovascular Disorders / drug therapy*,  psychology*
Cognition Disorders / prevention & control*
Dementia, Vascular / prevention & control*
Female
Great Britain
Humans
Male
Middle Aged
Neuropsychological Tests
Randomized Controlled Trials as Topic
Chemical
Reg. No./Substance:
0/Antihypertensive Agents

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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