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Titolo:
SPONTANEOUS DIAMETER OSCILLATIONS OF THE RADIAL ARTERY IN HUMANS
Autore:
HAYOZ D; TARDY Y; RUTSCHMANN B; MIGNOT JP; ACHAKRI H; FEIHL F; MEISTER JJ; WAEBER B; BRUNNER HR;
Indirizzi:
CHU VAUDOIS,CTR RECH CARDIOVASC,DIV HYPERTENS CH-1011 LAUSANNE SWITZERLAND CHU VAUDOIS,INST PHYSIOPATHOL CH-1011 LAUSANNE SWITZERLAND SWISS FED INST TECHNOL,GENIE MED LAB CH-1024 LAUSANNE SWITZERLAND ASULAB SA,SOC SUISSE MICROELECTR & HORLOGERIE,RES LABS CH-2001 NEUCHATEL SWITZERLAND
Titolo Testata:
The American journal of physiology
fascicolo: 6, volume: 264, anno: 1993,
parte:, 2
pagine: 2080 - 2084
SICI:
0002-9513(1993)264:6<2080:SDOOTR>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEART-RATE-VARIABILITY; CORONARY-ARTERIES; NITROGLYCERIN; VASOMOTION; INVITRO;
Keywords:
VASOMOTION; ARTERIAL DIAMETER; ARTERIAL DISTENSIBILITY; POWER SPECTRUM ANALYSIS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
34
Recensione:
Indirizzi per estratti:
Citazione:
D. Hayoz et al., "SPONTANEOUS DIAMETER OSCILLATIONS OF THE RADIAL ARTERY IN HUMANS", The American journal of physiology, 264(6), 1993, pp. 2080-2084

Abstract

In this study we investigated whether there exists a periodic contractile activity of the radial artery, and we evaluated the impact of such an oscillatory behavior on the mechanical properties of this medium-sized muscular vessel. The internal diameter of the right radial artery was measured noninvasively in six healthy male volunteers aged 18-42yr using a high-precision ultrasonic echo-tracking device. Blood pressure was simultaneously recorded on the same side at the middle fingerby photoplethysmography. The electrical activity of the heart was monitored during the entire experiment by electrocardiography. The frequency components of the arterial diameter, blood pressure, and heart rate were obtained using spectral analysis. Under resting conditions, theradial arterial diameter exhibited a spontaneous oscillation with a period ranging from 45 to 70 s and an amplitude of 80 +/- 14 mum (+/-SE). No very low-frequency mode (less-than-or-equal-to 0.02 Hz) was identified in either heart rate or blood pressure. These diameter oscillations affected the distensibility-pressure curves acquired simultaneously. Thus the 3-4% oscillatory variation in arterial diameter was paralleled by a 1.5- to 2-fold change in distensibility. These low-frequency oscillations of large arteries seem to be mediated by an intrinsic vascular mechanism.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 21:07:17