Document Detail


Comparison of assessment methods of cardiac vagal modulation.
MedLine Citation:
PMID:  22011809     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
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
Related Documents :
11137809 - Is posterior leaflet preservation in the surgical treatment of rheumatic mitral insuffi...
8219539 - Replacement of chordae tendineae using expanded polytetrafluoroethylene (eptfe) sutures...
10350099 - Expanding the use of total mitral valve preservation in combination with implantation o...
12035039 - Ventricular reconstruction results in improved left ventricular function and ameliorati...
1417299 - Simplified correction of outflow obstruction after mitral valve replacement.
19414639 - Mechanisms of recurrent functional mitral regurgitation after mitral valve repair in no...
308309 - Electrophysiologic effects of acute myocardial infarction in man.
6965579 - Propranolol for prevention of postoperative cardiac arrhythmias: a randomized study.
16612069 - Coronary artery bypass grafting is associated with a significant worsening of qt dynami...
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2011-10-21
Journal Detail:
Title:  Arquivos brasileiros de cardiologia     Volume:  97     ISSN:  1678-4170     ISO Abbreviation:  Arq. Bras. Cardiol.     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2012-01-20     Completed Date:  2012-07-31     Revised Date:  2012-10-11    
Medline Journal Info:
Nlm Unique ID:  0421031     Medline TA:  Arq Bras Cardiol     Country:  Brazil    
Other Details:
Languages:  eng; por     Pagination:  493-501     Citation Subset:  IM    
Affiliation:
Faculdade de Ciências Médicas e da Saúde de Juiz de Fora, Juiz de Fora, MG, Brazil.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
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:
Arq Bras Cardiol. 2012 Jun;98(6):569; author reply 569-70   [PMID:  22892695 ]

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


Previous Document:  PAI-1 4G/5G polymorphism and plasma levels association in patients with coronary artery disease.
Next Document:  Early school outcomes for children of postpartum depressed mothers: comparison with a community samp...