Revisiting the potential of time-domain indexes in short-term HRV analysis.
Biomed Tech (Berl)
; 51(4): 190-3, 2006 Oct.
Article
em En
| MEDLINE
| ID: mdl-17061936
ABSTRACT
In the context of HRV analysis, we evaluated the information content of two measures that can easily be derived from the classical RR time-domain indexes. The two measures are 1) the ratio sd/rmssd, where sd is the RR standard deviation and rmssd is the root mean square of squared differences of consecutive RR beats; and 2) the ratio sd2/sd1, where sd2 and sd1 are extracted from the Poincaré plot and represent the transversal and longitudinal dispersion of the cloud of points (RR(i),RR(i)(+1)). We compared the performance of the two measures with that of the classical LF/HF ratio in a group of healthy subjects who underwent a 70 degrees upright tilt test. The goodness of the results obtained by the two measures, the simplicity of their calculation and their applicability free from a priori assumptions on the characteristics of the data are proposed to the attention of the community involved in the HRV analysis as a possible alternative to the LF/HF ratio.
Buscar no Google
Base de dados:
MEDLINE
Assunto principal:
Relógios Biológicos
/
Algoritmos
/
Diagnóstico por Computador
/
Eletrocardiografia
/
Frequência Cardíaca
/
Modelos Cardiovasculares
Tipo de estudo:
Diagnostic_studies
/
Observational_studies
/
Prognostic_studies
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Biomed Tech (Berl)
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Itália