نتایج جستجو برای: pulse events
تعداد نتایج: 408654 فیلتر نتایج به سال:
BACKGROUND AND PURPOSE Pulse pressure is a stronger predictor of cardiovascular events than systolic or diastolic blood pressure in large cohorts of French and North American patients. However, its influence on stroke is controversial. Large-artery stiffness is the main determinant of pulse pressure. The influence of arterial stiffness on the occurrence of stroke has never been demonstrated. Ou...
RATIONALE Although home cardiorespiratory monitors have been used for a few decades, they do not give information on oxygenation status during events. Pulse oximeters with low false-alarm rates are now available but with no standards for alarm adjustment. OBJECTIVE To determine, in a population of children monitored at home with a pulse oximeter, whether the chosen alarm levels could safely i...
We define the “Pulse Synchronization” problem that requires nodes to achieve tight synchronization of regular pulse events, in the settings of distributed computing systems. Pulse-coupled synchronization is a phenomenon displayed by a large variety of biological systems, typically overcoming a high level of noise. Inspired by such biological models, a robust and self-stabilizing pulse synchroni...
Pulse wave analysis permits non-invasive assessment of arterial elasticity indices. The contour varies in different parts of the circulation. It depends on physiological or pathophysiological conditions of the organism. The pathological events like arteriosclerosis or diabetes have a primary effect to the artery elasticity. Hypertension or some heart diseases also influence the pulse wave veloc...
Elevation in blood pressure (BP) increases risk for all cardiovascular events. Nevertheless, the extent to which different indices of BP elevation may be associated to varying degrees with different cardiovascular outcomes remains unclear. We studied 13340 participants (aged 54 ± 6 years, 56% women and 27% black) of the Atherosclerosis Risk in Communities Study who were free of baseline cardiov...
A novel method was developed to separate the 238 U fission contribution measured in quasi-differential time-of-flight scattering experiments order isolate elastic and inelastic events. Pulse height distributions from in-beam measurements were used generate response functions, which reconstruct prompt neutron spectra. This validated by reconstructing 252 Cf spontaneous pulse distribution. Monte ...
Music and speech are behaviors in which complex sequences of events are exquisitely structured in time. Temporal structuring of acoustic signals is thought to have a profound impact on perception and attention, affording anticipation of when in the future important events are likely to occur (Jones, 1976). Pulse (beat) perception refers to the apprehension of a pseudo-periodic framework underly...
Letter by O’Rourke et al Regarding Article, “Arterial Stiffness and Cardiovascular Events: The Framingham Heart Study” To the Editor: The article by Mitchell et al1 confirms the value of carotid-femoral pulse-wave velocity in predicting cardiovascular events in normal populations. This is embraced in the 2007 European Society of Hypertension/European Society of Cardiology guidelines in which pu...
Arterial stiffness may predict coronary heart disease beyond classic risk factors. In a longitudinal study, we assessed the predictive value of arterial stiffness on coronary heart disease in patients with essential hypertension and without known clinical cardiovascular disease. Aortic stiffness was determined from carotid-femoral pulse wave velocity at baseline in 1045 hypertensives. The risk ...
Arterial stiffness may predict coronary heart disease beyond classic risk factors. In a longitudinal study, we assessed the predictive value of arterial stiffness on coronary heart disease in patients with essential hypertension and without known clinical cardiovascular disease. Aortic stiffness was determined from carotid-femoral pulse wave velocity at baseline in 1045 hypertensives. The risk ...
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