| Comparison of assessment methods of cardiac vagal modulation. | |
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MedLine Citation:
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PMID: 22011809 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Several methods have been used to assess cardiac vagal modulation, but there are gaps regarding the association and accuracy of these methods. OBJECTIVE: To investigate the association between three valid, reproducible and commonly methods used to assess cardiac vagal modulation and compare their accuracies. METHODS: Thirty healthy men (23 ± 4 years) and 15 men with coronary artery disease (61 ± 10 years) were evaluated in counterbalanced design by Heart Rate Variability (HRV; variables: the time domain = pNN50, SDNN and RMSSD, the frequency domain HF = ms² and HF n.u.), Respiratory Sinus Arrhythmia (RSA) and 4-second Exercise Test (T4s). Thirty healthy men (23 ± 4 years) and 15 men with coronary artery disease (61 ± 10 years) were evaluated in counterbalanced order by Heart Rate Variability (HRV; variables: the time domain = pNN50, SDNN and RMSSD, the frequency domain HF = ms² and HF n.u.), Respiratory Sinus Arrhythmia (RSA) and 4-second Exercise Test (T4s). RESULTS: Healthy subjects had higher vagal modulation by the three methods (p <0.05). There was a correlation in the healthy group (p <0.05) between the results of HRV (SDNN and pNN50 and RSA, but there was no correlation between the T4s and the other two methods. In the group with coronary artery disease, there was a correlation between the results of HRV (pNN50, SDNN, RMSSD, HF ms² and HF n.u.) and RSA. In addition, there was a correlation between the RSA and T4s. Finally, the T4s and RSA methods presented more accurate effect size and better accuracy (p <0.05), when compared to the HRV. CONCLUSION: HRV and RSA generated partially redundant results in healthy subjects and in patients with coronary artery disease, while the T4s generated results that were complementary to HRV and RSA in healthy subjects. In addition, RSA and T4s methods were more accurate when discriminating cardiac vagal modulation between healthy subjects and patients with coronary artery disease, when compared to HRV. |
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Authors:
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Vagner Clayton de Paiva; Kelen Rabelo Santana; Bruno Moreira Silva; Plínio Santos Ramos; Júlio César Moraes Lovisi; Claudio Gil Soares de Araújo; Djalma Rabelo Ricardo |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't Date: 2011-10-21 |
Journal Detail:
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Title: Arquivos brasileiros de cardiologia Volume: 97 ISSN: 1678-4170 ISO Abbreviation: Arq. Bras. Cardiol. Publication Date: 2011 Dec |
Date Detail:
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Created Date: 2012-01-20 Completed Date: 2012-07-31 Revised Date: 2012-10-11 |
Medline Journal Info:
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Nlm Unique ID: 0421031 Medline TA: Arq Bras Cardiol Country: Brazil |
Other Details:
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Languages: eng; por Pagination: 493-501 Citation Subset: IM |
Affiliation:
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Faculdade de Ciências Médicas e da Saúde de Juiz de Fora, Juiz de Fora, MG, Brazil. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Arrhythmia, Sinus / physiopathology* Autonomic Nervous System Diseases / diagnosis* Coronary Disease / physiopathology* Epidemiologic Methods Exercise Test / methods* Heart Rate / physiology* Humans Male Middle Aged Respiration Vagus Nerve / physiology* Young Adult |
| Comments/Corrections | |
Comment In:
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Arq Bras Cardiol. 2012 Jun;98(6):569; author reply 569-70
[PMID:
22892695
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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