Reproducibility for heart rate variability analysis during 6-Min walk test in patients with heart failure and agreement between devices
PLos ONE
; 11(12): 0167407-0167407, 2016.
Article
in English
| Sec. Est. Saúde SP, SESSP-IDPCPROD, Sec. Est. Saúde SP
| ID: biblio-1065073
Responsible library:
BR79.1
Localization: BR79.1
ABSTRACT
Heart rate variability (HRV) analysis is a useful method to assess abnormal functioning in the autonomic nervous system and to predict cardiac events in patients with heart failure (HF). HRV measurements with heart rate monitors have been validated with an electrocardiograph in healthy subjects but not in patients with HF. We explored the reproducibility of HRV in two consecutive six-minute walk tests (6MW), 60-minute apart, using a heart rate monitor (PolarS810i) and a portable electrocardiograph (called Holter) in 50 HF patients (mean age 59 years, NYHA II, left ventricular ejection fraction ~35%). The reproducibility for each device was analysed using a paired t-test or the Wilcoxon signed-rank test. Additionally, we assessed the agreement between the two devices based on the HRV indices at rest, during the 6MW and during recovery using concordance correlation coefficients (CCC), 95% confidence intervals and Bland-Altman plots. The test-retest for the HRV analyses was reproducible using Holter and PolarS810i at rest but not during recovery. In the second 6MW, patients showed significant increases in rMSSD and walking distance. The PolarS810i measurements had remarkably high concordance correlation [0.86
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Collection:
National databases
/
Brazil
Database:
Sec. Est. Saúde SP
/
SESSP-IDPCPROD
Main subject:
Heart Failure
/
Heart Rate
Language:
English
Journal:
PLos ONE
Year:
2016
Document type:
Article
Institution/Affiliation country:
Cardiology Division of Heart Institute (InCor) do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo/BR
/
Dante Pazzanese Institute of Cardiology São Paulo State/BR
/
Faculdade de Medicina da Universidade de São Paulo/BR
/
Pulmonary Division of Heart Institute (InCor) do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo/BR
/
University of São Paulo Medical School/BR