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Titolo:
EFFECTS OF SINOAORTIC DENERVATION ON SPECTRAL CHARACTERISTICS OF BLOOD-PRESSURE AND PULSE INTERVAL VARIABILITY - A WIDE-BAND APPROACH
Autore:
DIRIENZO M; CASTIGLIONI P; PARATI G; MANCIA G; PEDOTTI A;
Indirizzi:
FDN PRO JUVENTUTE,CTR BIOINGN,LARC MILAN ITALY OSPED SAN LUCA,IST SCI,CTR AUXOL ITALIANO MILAN ITALY OSPED SAN GERARDO MONZA ITALY POLITECN MILAN,DIPARTIMENTO BIOINGN I-20133 MILAN ITALY
Titolo Testata:
Medical & biological engineering & computing
fascicolo: 2, volume: 34, anno: 1996,
pagine: 133 - 141
SICI:
0140-0118(1996)34:2<133:EOSDOS>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEART-RATE-VARIABILITY; ARTERIAL-PRESSURE; CONSCIOUS DOGS; FLUCTUATIONS; OSCILLATIONS; REFLEX;
Keywords:
BARORECEPTOR; BAROFLEX; BLOOD PRESSURE; COHERENCE ANALYSIS; HEART RATE; PULSE INTERVAL; SPECTRAL ANALYSIS; SPECTRAL SMOOTHING; VARIABILITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
29
Recensione:
Indirizzi per estratti:
Citazione:
M. Dirienzo et al., "EFFECTS OF SINOAORTIC DENERVATION ON SPECTRAL CHARACTERISTICS OF BLOOD-PRESSURE AND PULSE INTERVAL VARIABILITY - A WIDE-BAND APPROACH", Medical & biological engineering & computing, 34(2), 1996, pp. 133-141

Abstract

Sino-aortic denervation (SAD) is employed in cats to evaluate the baroreflex influence on blood pressure (BP) and pulse interval (PI) spectral components from 0 . 00008 to 0 . 9 Hz as assessed by FFT wide-bandspectra and their 1/f modelling; and the linear coupling between BP and PI and between systolic and diastolic BP as assessed by coherence analysis. Specific procedures have been developed to obtain an effective smoothing of spectra and coherence functions. SAD induced an increase in BP powers from 0 . 03 to 0 . 0006 Hz and a power reduction of most of the remaining BP components; a reduction of PI powers at all frequencies; marked deviations of BP spectra from the 1/f trend; a reduction of the coherence between BP and PI from 0 . 12 to 0 . 5 Hz and a coherence enhancement at lower frequencies. These findings indicate thatthe arterial baroreflex modulates both fast and slow spectral components of BP and PI; homogeneously enhances PI fluctuations at all frequencies; produces differentiated effects on BP fluctuations along the frequency axis; and at low frequencies exerts the buffering action on BPthrough strategies which reduce the BP-PI linear link.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 10:00:51