Articoli di riviste: "Pulse wave velocity"

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Hirata, Kozo, Masanobu Kawakami e Michael F. O'Rourke. "Pulse Wave Analysis and Pulse Wave Velocity". Circulation Journal 70, n. 10 (2006): 1231–39. http://dx.doi.org/10.1253/circj.70.1231.

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Davies, Justine Ina, e Allan D. Struthers. "Pulse wave analysis and pulse wave velocity". Journal of Hypertension 21, n. 3 (marzo 2003): 463–72. http://dx.doi.org/10.1097/00004872-200303000-00004.

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Covic, Adrian, e Dimitrie Siriopol. "Pulse Wave Velocity Ratio". Hypertension 65, n. 2 (febbraio 2015): 289–90. http://dx.doi.org/10.1161/hypertensionaha.114.04678.

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Wilkinson, Ian B., David J. Webb e John R. Cockcroft. "Aortic pulse-wave velocity". Lancet 354, n. 9194 (dicembre 1999): 1996–97. http://dx.doi.org/10.1016/s0140-6736(05)76767-2.

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Ermini, L., L. Pastore, C. De Benedictis, C. Ferraresi e S. Roatta. "Venous pulse wave velocity". Vascular Pharmacology 132 (settembre 2020): 106714. http://dx.doi.org/10.1016/j.vph.2020.106714.

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Lehmann, Eldon D. "Aortic pulse-wave velocity versus pulse pressure and pulse-wave analysis". Lancet 355, n. 9201 (gennaio 2000): 412. http://dx.doi.org/10.1016/s0140-6736(05)74040-x.

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PODOLEC, Piotr, Grzegorz KOPEC, Jakub PODOLEC, Piotr WILKOLEK, Marek KROCHIN, Pawel RUBIS, Marcin CWYNAR, Tomasz GRODZICKI, Krzysztof ZMUDKA e Wieslawa TRACZ. "Aortic Pulse Wave Velocity and Carotid-Femoral Pulse Wave Velocity: Similarities and Discrepancies". Hypertension Research 30, n. 12 (2007): 1151–58. http://dx.doi.org/10.1291/hypres.30.1151.

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Mueller, Niklas, Joachim Streis, Sandra Müller, Hermann Pavenstädt, Thomas Felderhoff, Stefan Reuter e Veit Busch. "Pulse Wave Analysis and Pulse Wave Velocity for Fistula Assessment". Kidney and Blood Pressure Research 45, n. 4 (2020): 576–88. http://dx.doi.org/10.1159/000506741.

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Background/Aims: Pulse wave analysis (PWA) and pulse wave velocity (PWV) provide information about arterial stiffness and elasticity, which is mainly used for cardiovascular risk stratification. In the presented prospective observational pilot study, we examined the hypothesis that radiocephalic fistula (RCF)-related changes of haemodynamics and blood vessel morphology including high as well as low flow can be seen in specific changes of pulse wave (PW) morphology. Methods: Fifty-six patients with RCF underwent local ambilateral peripheral PWA and PWV measurement with the SphygmoCor® device. Given that the output parameters of the SphygmoCor® are not relevant for the study objectives, we defined new suitable parameters for PWA in direct proximity to fistulas and established an appropriate analysing algorithm. Duplex sonography served as reference method. Results: Marked changes of peripheral PW morphology when considering interarm differences of slope and areas between the fistula and non-fistula arms were observed in the Arteria radialis, A. brachialis and arterialized Vena cephalica. The sum of the slope differences was found to correlate with an increased flow, while in patients with fistula failure no changes in PW morphology were seen. Moreover, PWV was significantly reduced in the fistula arm. Conclusion: Beside duplex sonography, ambilateral peripheral PWA and PWV measurements are potential new clinical applications to characterize and monitor RCF function, especially in terms of high and low flow.

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SHIMIZU, Hiroyuki. "Brachial-Ankle Pulse Wave Velocity". Internal Medicine 44, n. 7 (2005): 688–89. http://dx.doi.org/10.2169/internalmedicine.44.688.

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Papaioannou, Theodore G., Dimitrios A. Vrachatis e Dimitris Tousoulis. "Ambulatory Pulse Wave Velocity Monitoring". Hypertension 70, n. 1 (luglio 2017): 27–29. http://dx.doi.org/10.1161/hypertensionaha.117.09121.

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Boutouyrie, Pierre, Marie Briet, Cédric Collin, Sebastian Vermeersch e Bruno Pannier. "Assessment of pulse wave velocity". Artery Research 3, n. 1 (2008): 3. http://dx.doi.org/10.1016/j.artres.2008.11.002.

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Ovechko, V. S., e V. P. Myhashko. "Spectral Particularities of Femtosecond Optical Pulses Propagating in Dispersive Medium". Ukrainian Journal of Physics 63, n. 6 (12 luglio 2018): 479. http://dx.doi.org/10.15407/ujpe63.6.479.

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We have proposed a refined solution of the wave equation for a dispersive medium without restriction on the duration of an optical pulse. We apply a series of elementary wave packages (EWP) to the representation of superwideband signals (fs pulse). We investigate peculiarities of the propagation of waves with low and high frequencies through the one-resonance medium. We show the existence of a “precursor” for fs optical pulses. We propose a formula for the optical signal velocity (OSV). Its value does not exceed the light velocity in vacuum. We have designed a method of adaptation of EWP-pulses to time-domain spectroscopy.

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KONRAD, P. E., W. A. TACKER, J. D. BOURLAND e L. A. GEDDES. "Implanted Pulse Sensors for Measuring Pulse Wave Velocity". Journal of Clinical Engineering 14, n. 6 (novembre 1989): 487–92. http://dx.doi.org/10.1097/00004669-198911000-00007.

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Yao, Yang, Shuran Zhou, Jordi Alastruey, Liling Hao, Stephen E. Greenwald, Yuelan Zhang, Lin Xu, Lisheng Xu e Yudong Yao. "Estimation of central pulse wave velocity from radial pulse wave analysis". Computer Methods and Programs in Biomedicine 219 (giugno 2022): 106781. http://dx.doi.org/10.1016/j.cmpb.2022.106781.

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Gurovich, Alvaro N., Darren P. Casey, Darren T. Beck e Randy W. Braith. "Determination of Central Arterial Pulse Wave Velocity from Pulse Wave Analysis". Medicine & Science in Sports & Exercise 40, Supplement (maggio 2008): S91. http://dx.doi.org/10.1249/01.mss.0000321846.76713.88.

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Kubarko, A. I., V. A. Mansurov, A. D. Svetlichny e L. D. Ragunovich. "РULSE WAVES РROPAGATION IN SMALL VESSELS: MEASUREMENT RESULTS AND MODELLING APPROACHES". Emergency Cardiology and Cardiovascular Risks 4, n. 2 (2020): 1037–44. http://dx.doi.org/10.51922/2616-633x.2020.4.2.1037.

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The objective of the research work was to develop devices and algorithm for synchronous recording of pulse waves and ECG for measuring the delay time of pulse waves in the branches of various arteries relative to the R wave on an ECG, and to carry out computer simulation of the pulse wave propagation process to determine the dependence of the pulse wave propagation velocity on branching and other hemodynamic and morphological parameters of blood vessels. Material and methods. The study was conducted in 74 healthy subjects aged 18-23 years. The propagation time of the pulse wave by the arterial branches of the vessels of the common carotid, internal, external carotid and radial arteries was measured. The time was calculated by the delay of the beginning of the pulse wave relative to the tip of the R wave on the ECG. Vascular pulsations were recorded using mechanical sensitive and photosensitive sensors, which signals were amplified, digitized, recorded and analyzed using original computer soft wares. Computer simulation of the propagation of pulse waves along the wall of an “equivalent” vessel corresponding to the branching of several arterial vessels was carried out. Results. The velocity of propagation of a pulse wave along the branches of small arterial vessels was lower than its value for larger main arteries. The simulation results confirmed that the propagation velocity of a pulse wave can significantly slow down its movement along branched arterial vessels, which differ in the mechanical properties of the main arteries. Conclusion. The data obtained indicate that the developed devices and measurement algorithms make it possible to register pulse waves of various small arteries and obtain reproducible indices of the delay time of the pulse wave relative to the R wave on the ECG. The time and velocity of the pulse wave propagation depends on the length of the studied vessels, the mechanical properties of the walls of the vessels, which follows from the comparison of the obtained data with the morphological features of the structure of vascular networks. Simulation results for an “equivalent” vessel show that one of the possible causes of a lower pulse wave propagation velocity in small vessels is lower mechanical properties of the branches of small vessels compared with those of larger arteries. However, the identification of the nature of these dependencies and their connection with stiffness of the walls of small vessels requires further study.

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ODA, Shuji, Satoru MATSUSHITA, Ryutaro TAKAHASHI, Hideki ITO, Hironori EZAKI, Akinori HATTORI, Genji TODA et al. "Pulse Wave Velocity in the Eldely". Journal of Japan Atherosclerosis Society 13, n. 5 (1985): 1231–36. http://dx.doi.org/10.5551/jat1973.13.5_1231.

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Shokawa, Tomoki, Michinori Imazu, Hideya Yamamoto, Mamoru Toyofuku, Naohito Tasaki, Tomokazu Okimoto, Kiminori Yamane e Nobuoki Kohno. "Pulse Wave Velocity Predicts Cardiovascular Mortality". Circulation Journal 69, n. 3 (2005): 259–64. http://dx.doi.org/10.1253/circj.69.259.

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Iwazu, Yoshitaka, Takaomi Minami e Kazuhiko Kotani. "Pulse Wave Velocity in Kawasaki Disease". Angiology 68, n. 3 (11 luglio 2016): 189–95. http://dx.doi.org/10.1177/0003319716651789.

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Kawasaki disease (KD) is an acute childhood febrile disease of unknown etiology. It exhibits not only coronary artery aneurysms in some cases but also systemic vasculitis. Whether KD is associated with accelerated atherosclerosis remains debatable. The measurement of pulse wave velocity (PWV) is useful as a simple, noninvasive measurement of arterial stiffness, an atherosclerotic manifestation. We herein present a systematic review of clinical studies that focused on PWV in patients with KD. A PubMed-based search identified 8 eligible studies published until June 2015. The PWV of patients with KD, regardless of antecedent coronary artery lesions, was high relative to controls, even though their blood pressure appeared to be similar. Although definitive conclusions cannot be made with the limited information, patients with KD may be at risk of systemic atherosclerosis in association with arterial stiffness. Further research, including longitudinal and outcome studies, is needed to determine the clinical significance of a potential increase in PWV in patients with KD.

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Fortier, Catherine, Aboubacar Sidibé, Marie-Pier Desjardins, Karine Marquis, Sacha A. De Serres, Fabrice Mac-Way e Mohsen Agharazii. "Aortic–Brachial Pulse Wave Velocity Ratio". Hypertension 69, n. 1 (gennaio 2017): 96–101. http://dx.doi.org/10.1161/hypertensionaha.116.08409.

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Iavicoli, O. "Determinant variables of pulse wave velocity". American Journal of Hypertension 13, n. 6 (giugno 2000): S190. http://dx.doi.org/10.1016/s0895-7061(00)00671-3.

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Silva, C., M. Formigo, N. Formigo, S. Freitas, C. Cunha, M. Rocha, C. Neves et al. "PULSE WAVE VELOCITY DETERMINANTS IN CHILDREN". Journal of Hypertension 37 (luglio 2019): e177. http://dx.doi.org/10.1097/01.hjh.0000572268.64555.51.

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Milan, Alberto, Gaia Zocaro, Dario Leone, Francesco Tosello, Irene Buraioli, Domenica Schiavone e Franco Veglio. "Current assessment of pulse wave velocity". Journal of Hypertension 37, n. 8 (agosto 2019): 1547–57. http://dx.doi.org/10.1097/hjh.0000000000002081.

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Safar, Michel E. "Current assessment of pulse wave velocity". Journal of Hypertension 38, n. 1 (gennaio 2020): 178. http://dx.doi.org/10.1097/hjh.0000000000002261.

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Safar, Michel E., e Michael F. OʼRourke. "The brachial–ankle pulse wave velocity". Journal of Hypertension 27, n. 10 (ottobre 2009): 1960–61. http://dx.doi.org/10.1097/hjh.0b013e328330b9a4.

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Huybrechts, Sofie A. M., Daniel G. Devos, Sebastian J. Vermeersch, Dries Mahieu, Eric Achten, Tine L. M. de Backer, Patrick Segers e Luc M. van Bortel. "Carotid to femoral pulse wave velocity". Journal of Hypertension 29, n. 8 (agosto 2011): 1577–82. http://dx.doi.org/10.1097/hjh.0b013e3283487841.

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Salvi, Paolo. "Systolic and diastolic pulse wave velocity". Journal of Hypertension 30, n. 2 (febbraio 2012): 273–74. http://dx.doi.org/10.1097/hjh.0b013e32834f9aff.

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Suzuki, Hiromichi, e Kazuoki Kondo. "Pulse Wave Velocity in Postmenopausal Women". Pulse 1, n. 1 (2013): 4–13. http://dx.doi.org/10.1159/000348416.

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Liang, W., e H. Tian. "Pulse wave velocity and cerebral infarction". Internal Medicine Journal 37, n. 8 (19 luglio 2007): 583. http://dx.doi.org/10.1111/j.1445-5994.2007.01445.x.

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Domnich, A., e J. Schaechtele. "P6.01 IMPLANTABLE PULSE WAVE VELOCITY SENSOR". Artery Research 7, n. 3-4 (2013): 153. http://dx.doi.org/10.1016/j.artres.2013.10.182.

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Begic, Edin, Sanja Miseljic, Buena Aziri, Damir Rebic, Alen Džubur, Nenad Miseljic, Mevludin Mekic, Halima Resic, Nedim Begic e Fuad Zukic. "Hemodialysis parameters and pulse wave velocity". International Journal of Applied and Basic Medical Research 12, n. 4 (2022): 269. http://dx.doi.org/10.4103/ijabmr.ijabmr_197_22.

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Nagasaki, Toshiki, Masaaki Inaba, Yasuro Kumeda, Yoshikazu Hiura, Shinsuke Yamada, Kumi Shirakawa, Eiji Ishimura e Yoshiki Nishizawa. "Central pulse wave velocity is responsible for increased brachial-ankle pulse wave velocity in subclinical hypothyroidism". Clinical Endocrinology 66, n. 2 (febbraio 2007): 304–8. http://dx.doi.org/10.1111/j.1365-2265.2006.02730.x.

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Jang, Shin Yi, Eun Young Ju, Eun Hee Huh, Jung Hyun Kim e Duk-Kyung Kim. "Determinants of Brachial-Ankle Pulse Wave Velocity and Carotid-Femoral Pulse Wave Velocity in Healthy Koreans". Journal of Korean Medical Science 29, n. 6 (2014): 798. http://dx.doi.org/10.3346/jkms.2014.29.6.798.

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Yildiz, Mustafa, e Osman Akdemir. "Assessment of the effects of physiological release of melatonin on arterial distensibility and blood pressure". Cardiology in the Young 19, n. 2 (aprile 2009): 198–203. http://dx.doi.org/10.1017/s1047951109003692.

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AbstractAimThe aim of our study was to investigate the effects of endogenous melatonin on arterial distensibility using measurements of the velocity of the aortic pulse wave between the carotid and femoral arteries in healthy young students assessed in the supine position.Material and methodsWe studied 29 healthy young students, aged between 18 and 27 years, with 19 being male. The measured the velocity of the aortic pulse wave between the carotid and femoral arteries, along the blood pressures and heart rate, while the subjects were in the supine position at two time points, namely from 01.30–02.30 and 13:30–14:30 hours, during a day, also taking plasma to measure the concentrations of melatonin. The velocity of the pulse waves was determined using an automatic device, the Complior Colson (France), which allowed on-line recording and automatic calculation of the velocity, the calculations being made by measuring the transit time of the pulse wave as it traversed the distance between two sites of recording according, the velocity of the pulse wave in meter per second being equal to the distance in meters divided by the time of transit in seconds.ResultsAlthough the velocity of the pulse wave, systolic, diastolic, and mean blood pressures, and heart rate were all increased in the morning relative to measurement made later in the day, levels of melatonin in the plasma were increased in the night. There was negative correlation between diurnal levels of melatonin and the velocity of the pulse wave.ConclusionOur findings indicate that increased levels of melatonin during the night may cause a decreased velocity of the aortic pulse wave, along with blood pressures and heart rate.

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Gurovich, Alvaro N., Emily Brzuzy, Jeremy Carson, Jennifer Curry, Stephanie Felker, Jesse C. Stewart, Adam T. Hirsh e Carolina Valencia. "Acute Pain Elicits Changes in Pulse Wave Analysis and Pulse Wave Velocity". Medicine & Science in Sports & Exercise 48 (maggio 2016): 371. http://dx.doi.org/10.1249/01.mss.0000486124.87716.8a.

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MURANO, Shunichi, Toshio NISHIDE, Masaki SHINOMIYA, Nobuhiro MORISAKI, Kohji SHIRAI, Yasushi SAITO, Mitsutaka MOTOYOSHI, Toyohiko YOSHIDA e Sho YOSHIDA. "Aortic Pulse Wave Velocity in Diabetes Mellitus, Familial Hypercholesterolemia and Chronic Hemodialysis of Chronic Renal Failure". Journal of Japan Atherosclerosis Society 15, n. 8 (1988): 1687–91. http://dx.doi.org/10.5551/jat1973.15.8_1687.

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Salvi, Paolo, Carlo Palombo, Giovanni Matteo Salvi, Carlos Labat, Gianfranco Parati e Athanase Benetos. "Left ventricular ejection time, not heart rate, is an independent correlate of aortic pulse wave velocity". Journal of Applied Physiology 115, n. 11 (1 dicembre 2013): 1610–17. http://dx.doi.org/10.1152/japplphysiol.00475.2013.

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Several studies showed a positive association between heart rate and pulse wave velocity, a sensitive marker of arterial stiffness. However, no study involving a large population has specifically addressed the dependence of pulse wave velocity on different components of the cardiac cycle. The aim of this study was to explore in subjects of different age the link between pulse wave velocity with heart period (the reciprocal of heart rate) and the temporal components of the cardiac cycle such as left ventricular ejection time and diastolic time. Carotid-femoral pulse wave velocity was assessed in 3,020 untreated subjects (1,107 men). Heart period, left ventricular ejection time, diastolic time, and early-systolic dP/dt were determined by carotid pulse wave analysis with high-fidelity applanation tonometry. An inverse association was found between pulse wave velocity and left ventricular ejection time at all ages (<25 years, r2 = 0.043; 25–44 years, r2 = 0.103; 45–64 years, r2 = 0.079; 65–84 years, r2 = 0.044; ≥85 years, r2 = 0.022; P < 0.0001 for all). A significant ( P < 0.0001) negative but always weaker correlation between pulse wave velocity and heart period was also found, with the exception of the youngest subjects ( P = 0.20). A significant positive correlation was also found between pulse wave velocity and dP/dt ( P < 0.0001). With multiple stepwise regression analysis, left ventricular ejection time and dP/dt remained the only determinant of pulse wave velocity at all ages, whereas the contribution of heart period no longer became significant. Our data demonstrate that pulse wave velocity is more closely related to left ventricular systolic function than to heart period. This may have methodological and pathophysiological implications.

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Khandanpour, Nader, Matthew P. Armon, Barbara Jennings, Allan Clark e Felicity J. Meyer. "The Association Between Ankle Brachial Pressure Index and Pulse Wave Velocity: Clinical Implication of Pulse Wave Velocity". Angiology 60, n. 6 (18 dicembre 2008): 732–38. http://dx.doi.org/10.1177/0003319708329335.

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Greve, Sara V., Marie K. Blicher, Ruan Kruger, Thomas Sehestedt, Eva Gram-Kampmann, Susanne Rasmussen, Julie K. K. Vishram, Pierre Boutouyrie, Stephane Laurent e Michael H. Olsen. "Estimated carotid–femoral pulse wave velocity has similar predictive value as measured carotid–femoral pulse wave velocity". Journal of Hypertension 34, n. 7 (luglio 2016): 1279–89. http://dx.doi.org/10.1097/hjh.0000000000000935.

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Hartley, C. J., G. E. Taffet, L. H. Michael, T. T. Pham e M. L. Entman. "Noninvasive determination of pulse-wave velocity in mice". American Journal of Physiology-Heart and Circulatory Physiology 273, n. 1 (1 luglio 1997): H494—H500. http://dx.doi.org/10.1152/ajpheart.1997.273.1.h494.

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Some transgenic mice have abnormal vascular function, but arterial geometry and dynamics are difficult to evaluate. To examine whether ultrasonic velocimetry could be used to determine arterial pulse-wave velocity (PWV) in mice, a custom-made 20-MHz pulsed Doppler instrument was used to obtain blood flow velocity signals from the aortic arch and the abdominal aorta 4 cm downstream. The upstroke (foot) of the velocity wave was timed at each site with respect to the R wave of the electrocardiogram, and PWV was calculated by dividing the separation distance by the difference in R-foot times. Doppler determinations were compared with invasive tonometry, and PWV was altered pharmacologically. It was found that the upstrokes of pressure (by tonometry) and velocity were coincident (+/-1 ms) and that PWV could be calculated by either method on exposed vessels. With the use of Doppler methods, pulse transit time was determined noninvasively with +/-1-ms resolution in 140 of 142 attempts in 82 mice. The calculated PWV in mice ranged from 220 to 850 cm/s with vasodilating anesthetics producing the low values and vasoconstricting agents producing the higher values. Thus PWV can be determined noninvasively in mice, is similar to that in other mammals, and responds as expected to vasoactive agents.

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Panwar, Anuraj, Ashok Kumar e C. M. Ryu. "Stimulated Raman forward scattering of laser in a pre-formed plasma channel". Laser and Particle Beams 30, n. 4 (25 settembre 2012): 605–11. http://dx.doi.org/10.1017/s0263034612000535.

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AbstractStimulated Raman forward scattering (SRFS) of an intense short pulse laser in a plasma channel formed by two pre-laser pulses is investigated. The density nonuniformity of a plasma channel increases the focusing of main laser pulse. Main laser pulse excites a plasma wave and two electromagnetic sideband waves. Laser and the sidebands exert an axial ponderomotive force on electrons driving the plasma wave. The nonlinear currents arise at sideband frequencies. The density perturbation due to plasma wave beats with the oscillatory velocity due to pump to drive the sidebands. The normalized growth rate of SRFS increases with the density nonuniformity of a plasma channel. However, in the presence of a deep plasma channel the focusing is ineffective to laser intensity, but the growth rate increases with the intensity of main laser pulse.

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Jin, Weiwei, Philip Chowienczyk e Jordi Alastruey. "Estimating pulse wave velocity from the radial pressure wave using machine learning algorithms". PLOS ONE 16, n. 6 (28 giugno 2021): e0245026. http://dx.doi.org/10.1371/journal.pone.0245026.

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One of the European gold standard measurement of vascular ageing, a risk factor for cardiovascular disease, is the carotid-femoral pulse wave velocity (cfPWV), which requires an experienced operator to measure pulse waves at two sites. In this work, two machine learning pipelines were proposed to estimate cfPWV from the peripheral pulse wave measured at a single site, the radial pressure wave measured by applanation tonometry. The study populations were the Twins UK cohort containing 3,082 subjects aged from 18 to 110 years, and a database containing 4,374 virtual subjects aged from 25 to 75 years. The first pipeline uses Gaussian process regression to estimate cfPWV from features extracted from the radial pressure wave using pulse wave analysis. The mean difference and upper and lower limits of agreement (LOA) of the estimation on the 924 hold-out test subjects from the Twins UK cohort were 0.2 m/s, and 3.75 m/s & -3.34 m/s, respectively. The second pipeline uses a recurrent neural network (RNN) to estimate cfPWV from the entire radial pressure wave. The mean difference and upper and lower LOA of the estimation on the 924 hold-out test subjects from the Twins UK cohort were 0.05 m/s, and 3.21 m/s & -3.11m/s, respectively. The percentage error of the RNN estimates on the virtual subjects increased by less than 2% when adding 20% of random noise to the pressure waveform. These results show the possibility of assessing the vascular ageing using a single peripheral pulse wave (e.g. the radial pressure wave), instead of cfPWV. The proposed code for the machine learning pipelines is available from the following online depository (https://github.com/WeiweiJin/Estimate-Cardiovascular-Risk-from-Pulse-Wave-Signal).

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Horinaka, Shigeo, Akihisa Yabe, Hiroshi Yagi, Kimihiko Ishimura, Hitoshi Hara, Tomoyuki Iemua e Hiroaki Matsuoka. "Comparison of Atherosclerotic Indicators between Cardio Ankle Vascular Index and Brachial Ankle Pulse Wave Velocity". Angiology 60, n. 4 (17 novembre 2008): 468–76. http://dx.doi.org/10.1177/0003319708325443.

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Background Aortic pulse wave velocity has been used for evaluating atherosclerosis. Recently, the development of the volume plethysmographic method has made it possible to easily measure the index of the pulse wave velocity. The brachial ankle pulse wave velocity and cardio ankle vascular index are used for estimating the extent of atherosclerosis. The diagnostic usefulness of these indexes in predicting coronary artery disease was examined. Methods The brachial ankle pulse wave velocity, the cardio ankle vascular index, and the high-sensitivity C-reactive protein were measured in 696 patients who had chest pain and underwent coronary angiography. Measurement values of brachial ankle pulse wave velocity were compared with those of cardio ankle vascular index in terms of the baseline covariates and the number of major coronary vessels involved (vessel disease). Results The brachial ankle pulse wave velocity was significantly correlated with age, systolic blood pressure, and diastolic blood pressure but not with the high-sensitivity C-reactive protein. The cardio ankle vascular index was correlated only with age and the high-sensitivity C-reactive protein. The average of both brachial ankle pulse wave velocity and cardio ankle vascular index values was greater in 3 vessel disease group than in 0 vessel disease group. The receiver operating characteristic curve showed that the diagnostic accuracy of coronary artery disease was significantly higher in the cardio ankle vascular index than in the brachial ankle pulse wave velocity (area under the curve ± standard error: 0.691 ± 0.025 vs. 0.584 ± 0.026; P < .05). Conclusions As a means of estimating the extent of atherosclerosis in large arteries, our results show that both brachial ankle pulse wave velocity and cardio ankle vascular index are useful and that cardio ankle vascular index may have some advantages in its application to patients taking blood pressure—lowering medication because of the minimum effect of blood pressure on its measurement values. The cardio ankle vascular index has increased performance over brachial ankle pulse wave velocity in predicting the coronary artery disease.

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Wilkinson, Ian B., Sabine A. Fuchs, Ilse M. Jansen, James C. Spratt, Gordon D. Murray, John R. Cockcroft e David J. Webb. "Reproducibility of pulse wave velocity and augmentation index measured by pulse wave analysis". Journal of Hypertension 16, Supplement (dicembre 1998): 2079–84. http://dx.doi.org/10.1097/00004872-199816121-00033.

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Frimodt‐Møller, M., A. H. Nielsen, A‐L Kamper e S. Strandgaard. "Pulse‐wave morphology and pulse‐wave velocity in healthy human volunteers: Examination conditions". Scandinavian Journal of Clinical and Laboratory Investigation 66, n. 5 (gennaio 2006): 385–94. http://dx.doi.org/10.1080/00365510600731332.

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Nogueira, Rodrigo B., Lucas A. Pereira, Alice F. Basso, Ingrid S. da Fonseca e Lorena A. Alves. "Arterial pulse wave propagation velocity in healthy dogs by pulse wave Doppler ultrasound". Veterinary Research Communications 41, n. 1 (8 dicembre 2016): 33–40. http://dx.doi.org/10.1007/s11259-016-9669-2.

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Kasumova, Rena J., Gulnara A. Safarova e Asmar R. Ahmadova. "Group velocity mismatch at ultrashort electromagnetic pulse propagation in nonlinear metamaterials". Open Physics 17, n. 1 (28 aprile 2019): 200–205. http://dx.doi.org/10.1515/phys-2019-0020.

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Abstract (sommario):

Abstract The parametric interaction of optical wave pulses in metamaterials is considered in the first approximation of the theory of dispersion. The interaction between the quasi-monochromatic pump wave and the wave pulse at the total frequency with quadratic phase modulation is assumed. The results of calculation of the shape of the spectrum of an excited signal wave at a difference frequency are presented for low frequency pumping. It is shown that the effects of group mismatch in metamaterials lead to a narrowing of the spectrum of the excited wave. With an increase in the modulation degree of a weak exciting wave, the spectrum of the excited wave broadens.

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Bruno, Rosa Maria, Jean Louis Pépin, Jean Philippe Empana, Rui Yi Yang, Vincent Vercamer, Paul Jouhaud, Pierre Escourrou e Pierre Boutouyrie. "Home monitoring of arterial pulse-wave velocity during COVID-19 total or partial lockdown using connected smart scales". European Heart Journal - Digital Health 3, n. 3 (28 settembre 2022): 362–72. http://dx.doi.org/10.1093/ehjdh/ztac027.

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Abstract Aims To investigate the impact of coronavirus disease 2019 lockdown on trajectories of arterial pulse-wave velocity in a large population of users of connected smart scales that provide reliable measurements of pulse-wave velocity. Methods and results Pulse-wave velocity recordings obtained by Withings Heart Health & Body Composition Wi-Fi Smart Scale users before and during lockdown were analysed. We compared two demonstrative countries: France, where strict lockdown rules were enforced (n = 26 196) and Germany, where lockdown was partial (n = 26 847). Subgroup analysis was conducted in users of activity trackers and home blood pressure monitors. Linear growth curve modelling and trajectory clustering analyses were performed. During lockdown, a significant reduction in vascular stiffness, weight, blood pressure, and physical activity was observed in the overall population. Pulse-wave velocity reduction was greater in France than in Germany, corresponding to 5.2 month reduction in vascular age. In the French population, three clusters of stiffness trajectories were identified: decreasing (21.1%), stable (60.6%), and increasing pulse-wave velocity clusters (18.2%). Decreasing and increasing clusters both had higher pulse-wave velocity and vascular age before lockdown compared with the stable cluster. Only the decreasing cluster showed a significant weight reduction (−400 g), whereas living alone was associated with increasing pulse-wave velocity cluster. No clusters were identified in the German population. Conclusions During total lockdown in France, a reduction in pulse-wave velocity in a significant proportion of French users of connected smart bathroom scales occurred. The impact on long-term cardiovascular health remains to be established.

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Driscoll, M. Darcy, J. Malcolm, O. Arnold, Gordon E. Marchiori, Linda A. Harker e Marvin H. Sherebrin. "Determination of Appropriate Recording Force for Non-Invasive Measurement of Arterial Pressure Pulses". Clinical Science 92, n. 6 (1 giugno 1997): 559–66. http://dx.doi.org/10.1042/cs0920559.

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1. Non-invasive recording techniques of the arterial pressure pulse will distort the arterial wall and may alter pulse wave measurements. We hypothesized that intersubject variability of these measurements would be reduced if recording forces were normalized to reflect individualized arterial occlusion forces. 2. In 10 normal male subjects (age 24 ± 1 years), brachial, radial and finger arterial pressure pulses were recorded simultaneously using volume displacement pulse transducers (Fukuda TY-303) and a finger pressure monitoring system (Finapres, Ohmeda 2300) and were made at 2, 5 and 10–100% (10% increments) of the brachial arterial force associated with marked distortion of finger pulsations. Forces were applied at the brachial site in a randomized order while a constant 1.8 N force was applied at the radial artery site. Pressure pulses were analysed using the discrete fast Fourier transform. 3. Pulse amplitude, contour, wave velocity and relative transmission ratios remained relatively constant until the brachial artery recording force exceeded 59.9 ± 0.3% of the largest recording force used in each subject (7.14 ± 0.75 N). The finger pulse pressures (P < 0.0001), radial pulse amplitudes (P < 0.0001) and contours (harmonics 2–6, P < 0.003), pulse wave velocity (P < 0.021) and relative transmission ratios (harmonics 3–7, P < 0.01) then decreased with higher recording forces. 4. To avoid distortion, non-invasive recordings of arterial pressure pulse amplitude, contour, pressure wave velocity and relative transmission ratios along a peripheral arterial segment should use recording forces of less than 60% of the force associated with marked distortion of finger pulsations.

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Dursun, Hüseyin, Ali Taner, Ersel Onrat, Gülay Yılmaz Özkeçeci, Alaettin Avşar e Mehmet Melek. "Pulse Wave Velocity in Mitral Annular Calcification". Journal of Tepecik Education and Research Hospital 18, n. 2 (2008): 70–74. http://dx.doi.org/10.5222/terh.2008.09552.

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