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Titolo:
Spontaneous baroreflex sensitivity in children and young adults calculatedin the time and frequency domain
Autore:
Rudiger, H; Bald, M;
Indirizzi:
Univ Essen Gesamthsch, Childrens Hosp, Dept Pediat Nephrol, D-45122 Essen,Germany Univ Essen Gesamthsch Essen Germany D-45122 phrol, D-45122 Essen,Germany Univ Technol, Inst Occupat & Social Med, Dresden, Germany Univ Technol Dresden Germany nst Occupat & Social Med, Dresden, Germany
Titolo Testata:
AUTONOMIC NEUROSCIENCE-BASIC & CLINICAL
fascicolo: 1-2, volume: 93, anno: 2001,
pagine: 71 - 78
SICI:
1566-0702(20011008)93:1-2<71:SBSICA>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
BLOOD-PRESSURE VARIABILITY; HEART-RATE; AUTONOMIC DYSFUNCTION; SPECTRAL-ANALYSIS; HYPERTENSION; SEQUENCE; INDEXES;
Keywords:
baroreflex sensitivity; sequence technique; transfer function; alpha-coefficient; children;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Bald, M Univ Essen Gesamthsch, Childrens Hosp, Dept Pediat Nephrol, Hufelandstr 55, D-45122 Essen, Germany Univ Essen Gesamthsch Hufelandstr 55 Essen Germany D-45122 ermany
Citazione:
H. Rudiger e M. Bald, "Spontaneous baroreflex sensitivity in children and young adults calculatedin the time and frequency domain", AUTON NEURO, 93(1-2), 2001, pp. 71-78

Abstract

Spontaneous baroreflex receptor sensitivity (BRS) was calculated in 22 healthy normotensive children and young adults (age 14 +/- 5 years) using the sequence technique (time domain) and the a-coefficient or the gain of the transfer function between coherent oscillations (frequency domain). BRS estimated by the sequence technique (median: 16.7 ms/mm Hg) was significantly higher than BRS calculated from the gain of the transfer function using all frequencies (median: 13.0 ms/mm Hg; p = 0.009). However, there was a high correlation between these methods (r = 0.92). The reproducibility coefficient (RC) was high for all methods, but the coefficient of variability (VC) was best for the sequence technique and the gain of the transfer function, but significantly worse for the estimates of the alpha -coefficient in the low or high frequency band. The differentiation between increasing or decreasing blood pressure (BP) ramps did not give further information showing the same BRS values. The best BRS estimates will be achieved by using three consecutive beats without lag by the sequence technique and by using only frequencies with a proven correlation of BP and pulse interval (PI) and then calculating the gain of the transfer function using coherent oscillations. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 19:28:10