Evaluation of Cardiac Autonomic Modulation Using Symbolic Dynamics After Cardiac Transplantation
AUTOR(ES)
Moura-Tonello, Sílvia Cristina Garcia de
FONTE
Braz. J. Cardiovasc. Surg.
DATA DE PUBLICAÇÃO
11/11/2019
RESUMO
Abstract Objective: To characterize the behavior of cardiac autonomic modulation in individuals with different times after orthotopic heart transplantation (HTx) using symbolic dynamics analysis. Methods: Sixty patients were evaluated after HTx. We recorded their instantaneous R-R intervals (RRi) by cardiac monitor Polar® RS800CX™ (Polar Electro Oy, Kempele, Finland) for 10 minutes. The same sequence of RRi with 256 consecutive beats was used to perform spectral analysis and symbolic dynamics analysis. We used hierarchical clustering to form groups. One-way analysis of variance (ANOVA) (with Holm-Sidak method) or one-way Kruskal-Wallis test (with Dunn´s post-hoc test) was used to analyze the difference between groups. Linear correlation analysis between variables was performed using Pearson’s or Spearman’s tests. P-value < 0.05 was considered statistically significant. Results: The 0V% index increased, the 2UV% index and the normalized complexity index decreased with an increase of HTx postoperative time. There were a negative correlation between complexity indexes and 0V% and a positive correlation between complexity indexes and 2UV%. Conclusion: Symbolic dynamics indexes were able to show a specific cardiac autonomic modulation pattern for HTx recipients with different postoperative times.
Documentos Relacionados
- Spectral and symbolic analysis of the effect of gender and postural change on cardiac autonomic modulation in healthy elderly subjects
- Effects of water ingestion throughout exercise and recovery on cardiac autonomic modulation during and after exercise
- Mediastinitis after cardiac transplantation
- Influence of resistance training on cardiac autonomic modulation: literature review
- Analysis of cardiac autonomic modulation in obese and eutrophic children