Abstract
Background: Decreased heart rate variability (HRV) indexes indicate low vagal activity and may be associated with development of dementia. The neurodegenerative process is associated with the cardiovascular autonomic control.
Objective: The aim of this systematic review was to investigate the effect size (ES) magnitude of the HRV indexes in the evaluation of autonomic dysfunction in older persons with dementia.
Methods: PubMed (Medline), Web of Science, Scopus, Scielo, Lilacs, and APA Psycnet were consulted. Complete original articles published in English or Portuguese, investigating the association between autonomic dysfunction and dementia, using the HRV indexes were included.
Results: The search identified 97 potentially relevant articles. After screening the full text, eight articles were included in the qualitative analysis and six were included in the quantitative analysis. Almost all indexes showed a negative ES for all types of dementia and mild cognitive impairment. The most common frequency band of the power spectrum density function was the high frequency, which was reported by six studies. The meta-analysis of high frequency power in Alzheimer's disease group showed high heterogeneity and inconsistent results.
Conclusion: The negative effect size suggests an autonomic dysfunction in all types of dementia as well as mild cognitive impairment. However, further analysis is necessary to support these results.
Keywords: Autonomic nervous system, autonomic dysfunction, parasympathetic nervous system, dementia, neurodegeneration, Alzheimer's disease.
Current Alzheimer Research
Title:Heart Rate Variability Indexes in Dementia: A Systematic Review with a Quantitative Analysis
Volume: 15 Issue: 1
Author(s): Vanessa Pereira da Silva*, Bruno Ribeiro Ramalho Oliveira , Roger Gomes Tavares Mello, Helena Moraes , Andrea Camaz Deslandes and Jerson Laks
Affiliation:
- Laboratorio de Neurociencia do Exercicio (LaNEx), Rio de Janeiro,Brazil
Keywords: Autonomic nervous system, autonomic dysfunction, parasympathetic nervous system, dementia, neurodegeneration, Alzheimer's disease.
Abstract: Background: Decreased heart rate variability (HRV) indexes indicate low vagal activity and may be associated with development of dementia. The neurodegenerative process is associated with the cardiovascular autonomic control.
Objective: The aim of this systematic review was to investigate the effect size (ES) magnitude of the HRV indexes in the evaluation of autonomic dysfunction in older persons with dementia.
Methods: PubMed (Medline), Web of Science, Scopus, Scielo, Lilacs, and APA Psycnet were consulted. Complete original articles published in English or Portuguese, investigating the association between autonomic dysfunction and dementia, using the HRV indexes were included.
Results: The search identified 97 potentially relevant articles. After screening the full text, eight articles were included in the qualitative analysis and six were included in the quantitative analysis. Almost all indexes showed a negative ES for all types of dementia and mild cognitive impairment. The most common frequency band of the power spectrum density function was the high frequency, which was reported by six studies. The meta-analysis of high frequency power in Alzheimer's disease group showed high heterogeneity and inconsistent results.
Conclusion: The negative effect size suggests an autonomic dysfunction in all types of dementia as well as mild cognitive impairment. However, further analysis is necessary to support these results.
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Cite this article as:
da Silva Pereira Vanessa *, Ramalho Oliveira Ribeiro Bruno , Tavares Mello Gomes Roger , Moraes Helena, Deslandes Camaz Andrea and Laks Jerson , Heart Rate Variability Indexes in Dementia: A Systematic Review with a Quantitative Analysis, Current Alzheimer Research 2018; 15 (1) . https://dx.doi.org/10.2174/1567205014666170531082352
DOI https://dx.doi.org/10.2174/1567205014666170531082352 |
Print ISSN 1567-2050 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5828 |
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