Pulse Wave
Local pulse wave velocity as a cardiovascular biomarker
... choice for the current small image width of 25 mm has several reasons: the limited workspace, long time to save of the system and the test measurements appeared well enough for the study. However, the results showed that ...
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A 1D pulse wave propagation model of the hemodynamics of calf muscle pump function
... one-dimensional pulse wave propagation model is used, which has been well-established to examine and predict arterial hemodynamics [11–14] but has only been applied in few studies to model venous ...
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Fingertip Pulse Wave (PPG signal) Analysis and Heart Rate Detection
... beat pulse wave propagation in real time and to evaluate the vascular blood flow resistance an important physiological parameter for vascular ...diagnostics. Pulse wave analysis helps to study ...
5
Mechanism of Magnetic Pulse Wave Signal for Blood Pressure Measurement
... Continuous non-invasive blood pressure (BP) measurement can be realized by using pulse transit time (PTT) based on electrocardiogram (ECG) and pulse wave signal. Modulated magnetic signature of blood ...
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Measurement of area difference ratio of Photoplethysmographic pulse wave in patients with pre eclampsia
... Preeclampsia remains one of the leading causes of maternal and fetal morbidity and mortality worldwide, af- fecting 2 – 3% of all pregnancies in the USA and 7.5% glo- bally [1, 2]. The disease is characterized by ...
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Changes in exercise habits and pulse wave velocity with lifestyle modification in Japanese
... determining pulse pressure even at an early stage of disease and its changes have been shown to be an independent predictor of hard endpoints in patients with a high cardiovascular ...risk. Pulse pressure ...
5
Local Pulse Wave Velocity Estimation in the Carotids Using Dynamic MR Sequences
... The current study presents a new protocol for local pulse wave velocity (PWV) measurement us- ing dynamic MR sequences, which have a high temporal resolution (TR < 6 ms). MR images were obtained at two ...
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A Photoplethysmographic Monitor for Local Pulse Wave Velocity Measurement
... the pulse wave signal, allowing the analysis of volumetric changes of pulsating blood and, therefore, the expansion and contraction of blood ...The pulse waves, measured by a PPG sensor, result from ...
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Non triggered quantification of central and peripheral pulse wave velocity
... The method is limited to slices where vessel interfer- ence can be avoided with an appropriate choice of readout orientation. This limitation is exacerbated when projections have to be acquired simultaneously at two ...
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Arterial mechanical properties in dilated cardiomyopathy Aging and the response to nitroprusside
... The effects of aging on arterial mechanical properties and the response to nitroprusside were examined in 25 patients with dilated cardiomyopathy. High-fidelity pressures were recorded with a multisensor catheter. ...
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Influence of exercise mode on post-exercise arterial stiffness and pressure wave measures in healthy adult males
... carotid-femoral pulse wave velocity (cf-PWV) has been reported to be highly predictive of the future risk of cardiovascular events (Mattace-Raso et ...pressure wave reflection and left ventricular ...
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Arterial mechanical properties after replacement or reconstruction of the aortic root
... central pulse pressure, augmentation index adjusted to a heart rate of 75 beats per minute (AIx@HR75) and pulse wave velocity in 25 Marfan patients who had undergone an aortic valve-sparing ...
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PULSE WAVE VELOCITY AND ITS USEFULNESS IN ESTIMATION OF HYPERTENSION
... Hypertension is related to the risk of development of stroke and coronary disease. Many pharmacoeconomic studies reveal an enormous expenditure involved in the treatment of high blood pressure [1]. Hence, an efficient ...
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Simulation and Modeling of Single Phase DC AC Converter of Solar Inverter
... reference signal is greater than the carrier signal, and the switching signal ends if the carrier signal is greater than the reference signal. Note that the effective value of the switching signals looks sinusoidal, and ...
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A review of X-ray laser development at Rutherford Appleton Laboratory
... shorter wave- length lasing in the Ne- or Ni-like ...shorter wave- length lasing could occur where the excited electron vacates a 2s ~Ne-like! or 3p ~Ni-like! sublevel ~see, ...
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Technical Note:Practical considerations on the use of down sized time domain reflectometry (TDR) probes
... In spite of significant advances in the practical techniques and conceptual understanding of the time-domain reflectometry (TDR) technique over the last two decades, the TDR probe length currently used, usually above 10 ...
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Some periodic and solitary travelling-wave solutions of the short pulse equation
... In [2] it was shown that the SPE and the sine-Gordon equation (SGE) are equivalent to one another through a chain of transformations. In [3] various known solutions of the SGE were used to generate solutions to the SPE. ...
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The role of laser wavelength and pulse frequency in inactivation of escherichia coli and listeria monocytogenes
... Ultra violet (UV) lasers have been used in food industry, medicine and dentistry to deactivate pathogenic bacteria of various types. The use of laser and other pulsed light systems for phototherapy and other microbial ...
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Arterial hemodynamics in human hypertension
... Differences in aortic impedance between normotensives and hypertensives are not well characterized. We examined impedance in 8 normotensive and 11 hypertensive (mean 96.7 vs. 122.2 mmHg) age-matched, Chinese patients ...
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Travelling waves in a model of quasi active dendrites with active spines
... We also study the speed of the corresponding saltatory travelling wave as a function of spine spacing. In Section V we generalise the discrete model of Section IV to an arbitrary dendritic geometry. The voltage ...
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