Short-term complexity of cardiovascular oscillations during orthostatic change in aging
Contributo in Atti di convegno
Data di Pubblicazione:
2014
Citazione:
Short-term complexity of cardiovascular oscillations during orthostatic change in aging / A.M. Catai, A.C.M. Takahashi, N.M. Perseguini, J.C. Milan, V. Minatel, T. Bassani, V. Bari, A. Marchi, P.R. Santos, A. Borghi Silva, N. Montano, A. Porta - In: Cardiovascular Oscillations (ESGCO), 2014 8th Conference of the European Study Group on[s.l] : IEEE Press, 2014. - ISBN 9781479939695. - pp. 49-50 (( Intervento presentato al 8. convegno Conference of the European-Study-Group-on-Cardiovascular-Oscillations (ESGCO) tenutosi a Trento nel 2014 [10.1109/ESGCO.2014.6847513].
Abstract:
Complexity of R-R intervals (RR) and systolic arterial pressure (SAP) variability were computed to detect the aging process influence over cardiovascular control in resting supine (REST) and standing position (STAND). One hundred healthy subjects were divided into five groups (n=20 for each), according to age: 21-30; 31-40; 41-50; 51-60; 61-70. The RR and SAP series were recorded for 15 minutes at REST and STAND. Short sequences of RR and SAP were analyzed by conditional entropy. At REST, RR complexity showed reduction with age in 61-70, and SAP complexity decreased, starting from 31-40. Changes in cardiovascular control complexity, induced by STAND, reveal the difficulty of elderly individuals in dealing with sympathetic stressors.
Tipologia IRIS:
03 - Contributo in volume
Keywords:
conditional entropy; variability
Elenco autori:
A.M. Catai, A.C.M. Takahashi, N.M. Perseguini, J.C. Milan, V. Minatel, T. Bassani, V. Bari, A. Marchi, P.R. Santos, A. Borghi Silva, N. Montano, A. Porta
Link alla scheda completa:
Titolo del libro:
Cardiovascular Oscillations (ESGCO), 2014 8th Conference of the European Study Group on