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Pulse wave velocity

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https://www.readbyqxmd.com/read/29048215/sauna-exposure-leads-to-improved-arterial-compliance-findings-from-a-non-randomised-experimental-study
#1
Earric Lee, Tanjaniina Laukkanen, Setor K Kunutsor, Hassan Khan, Peter Willeit, Francesco Zaccardi, Jari A Laukkanen
Background Heat therapy has been suggested to improve cardiovascular function. However, the effects of hot sauna exposure on arterial compliance and the dynamics of blood flow and pressure have not been well documented. Thus, we investigated the short-term effects of sauna bathing on arterial stiffness and haemodynamics. Design The design was an experimental non-randomised study. Methods There were 102 asymptomatic participants (mean age, 51.9 years) who had at least one cardiovascular risk factor. Participants were exposed to a single sauna session (duration: 30 min; temperature: 73℃; humidity: 10-20%)...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/29048108/renin-angiotensin-system-blockade-promotes-a-cardio-renal-protection-in-albuminuric-homozygous-sickle-cell-patients
#2
Jean-Philippe Haymann, Nadjib Hammoudi, Katia Stankovic Stojanovic, Frederic Galacteros, Anoosha Habibi, Virginie Avellino, Pablo Bartolucci, Yahia Benzerara, Jean-Benoit Arlet, Morad Djebbar, Emmanuel Letavernier, Gilles Grateau, Nathalie Tabibzadeh, Alexei Girshovich, Michel Chaignon, Robert Girot, Pierre Levy, Francois Lionnet
The management of sickle cell nephropathy (SCN) at an early stage is an important issue to prevent renal and cardiovascular morbidity and mortality. This study aimed to evaluate in this population, whether angiotensin converting enzyme inhibitors (ACEIs) treatment could exert a cardio-renal protection in a SCN cohort. Forty-two SCN patients (urine albumin:creatinine ratio (ACR) > 10 mg/mmol) were treated with ACEIs for 6 months, then evaluated for ACR, measured glomerular filtration rate (mGFR) together with haematological and cardiovascular parameters...
October 19, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/29046980/aortic-stiffness-in-aging-and-hypertension-prevention-and-treatment-with-habitual-aerobic-exercise
#3
REVIEW
Gary L Pierce
PURPOSE OF REVIEW: Habitual aerobic exercise is associated with lower aortic stiffness, as measured by carotid-femoral pulse wave velocity (CFPWV), in middle-aged/older adults without hypertension, but beneficial effects of aerobic exercise on CFPWV in hypertension remain contraversial. Therefore, the focus of this review is to discuss the evidence for and against the beneficial effects of aerobic exercise on aortic stiffness in middle-aged and older adults with hypertension, possible limitations in these studies, and highlight novel directions for future research...
October 18, 2017: Current Hypertension Reports
https://www.readbyqxmd.com/read/29045343/brachial-ankle-pulse-wave-velocity-compared-with-mean-arterial-pressure-and-pulse-pressure-in-risk-stratification-in-a-chinese-population
#4
Yi-Chao Lu, Ping Lyu, Hong-Yan Zhu, Dong-Xu Xu, Sulaiman Tahir, Hai-Feng Zhang, Fang Zhou, Wen-Ming Yao, Lei Gong, Yan-Li Zhou, Rong Yang, Yan-Hui Sheng, Dong-Jie Xu, Xiang-Qing Kong, Jan A Staessen, Xin-Li Li
BACKGROUND: Brachial-ankle pulse wave velocity (baPWV) can be easily measured in an observer-independent way, but lacks robust population-based validation in terms of fatal combined with nonfatal outcomes. METHOD: To address this issue, we studied 4251 Chinese randomly recruited Gaoyou County (54.1% women; mean age, 52.1). RESULTS: In the whole study population, mean values were 102.4 mmHg for mean arterial pressure (MAP), 51.1 mmHg for pulse pressure, and 14...
October 16, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/29043559/nonfunctioning-adrenal-incidentaloma-affecting-central-blood-pressure-and-arterial-stiffness-parameters
#5
Tolga Akkan, Mustafa Altay, Yasemin Ünsal, Murat Dağdeviren, Esin Beyan
PURPOSE: Recently, cardiovascular risk is thought to be increased in patients with nonfunctioning adrenal incidentaloma (NFAI). There are no sufficient studies in the literature to evaluate this situation in NFAI patients without cardiovascular risk. The objective of this study is to compare peripheral and central blood pressure and arterial stiffness between patients with NFAI and healthy volunteers (of a similar age, gender and body mass index as the NFAI group) who have no traditional cardiovascular risk factors and autonomous cortisol secretion, with pulse wave analysis (PWA)...
October 17, 2017: Endocrine
https://www.readbyqxmd.com/read/29041383/causality-and-information-transfer-in-simultaneously-slow-and-fast-light-media
#6
Jon D Swaim, Ryan T Glasser
We demonstrate the simultaneous propagation of slow- and fast-light optical pulses in a four-wave mixing scheme using warm potassium vapor. We show that when the system is tuned such that the input probe pulses exhibit slow-light group velocities and the generated pulses propagate with negative group velocities, the information velocity in the medium is nonetheless constrained to propagate at, or less than, c. These results demonstrate that the transfer and copying of information on optical pulses to those with negative group velocities obeys information causality, in a manner that is reminiscent of a classical version of the no-cloning theorem...
October 2, 2017: Optics Express
https://www.readbyqxmd.com/read/29041113/acceleration-of-sub-relativistic-electrons-with-an-evanescent-optical-wave-at-a-planar-interface
#7
M Kozák, P Beck, H Deng, J McNeur, N Schönenberger, C Gaida, F Stutzki, M Gebhardt, J Limpert, A Ruehl, I Hartl, O Solgaard, J S Harris, R L Byer, P Hommelhoff
We report on a theoretical and experimental study of the energy transfer between an optical evanescent wave, propagating in vacuum along the planar boundary of a dielectric material, and a beam of sub-relativistic electrons. The evanescent wave is excited via total internal reflection in the dielectric by an infrared (λ = 2 μm) femtosecond laser pulse. By matching the electron propagation velocity to the phase velocity of the evanescent wave, energy modulation of the electron beam is achieved. A maximum energy gain of 800 eV is observed, corresponding to the absorption of more than 1000 photons by one electron...
August 7, 2017: Optics Express
https://www.readbyqxmd.com/read/29040156/accelerated-atheromatosis-and-arteriosclerosis-in-primary-systemic-vasculitides-current-evidence-and-future-perspectives
#8
Ourania D Argyropoulou, Athanase D Protogerou, Petros P Sfikakis
PURPOSE OF REVIEW: Primary systemic vasculitides (PSV) encompass a subset of autoimmune diseases, characterized by inflammation of blood vessels. Atheromatosis and arteriosclerosis may be accelerated in several PSV and account for the increased rate of cardiovascular morbidity that some exhibit. We aimed to summarize recent studies reporting on the acceleration of atheromatosis and/or arteriosclerosis in each type of PSV, using state-of-the-art noninvasive vascular biomarkers with clinical value as end points...
October 16, 2017: Current Opinion in Rheumatology
https://www.readbyqxmd.com/read/29038853/arterial-ventricular-coupling-in-type-1-diabetes-arterial-stiffness-is-associated-with-impaired-global-longitudinal-strain-in-type-1-diabetes-patients-the-thousand-1-study
#9
Simone Theilade, Peter Rossing, Jan S Jensen, Magnus T Jensen
AIMS: Diabetes is associated with higher arterial stiffness-an early marker of cardiovascular disease. The coupling between arterial stiffness and myocardial function is still unresolved. We investigate associations between arterial stiffness and early myocardial impairment assessed with advanced echocardiography. METHODS: In 305 type 1 diabetes (T1D) patients without known heart disease and with normal left ventricular ejection fraction (LVEF) (biplane LVEF > 45%), we measured arterial stiffness as pulse wave velocity (PWV) and performed conventional and speckle-tracking echocardiography assessing global longitudinal strain (GLS) as a measure of systolic myocardial function...
October 16, 2017: Acta Diabetologica
https://www.readbyqxmd.com/read/29038203/effect-of-continuous-positive-airway-pressure-weight-loss-or-continuous-positive-airway-pressure-plus-weight-loss-on-central-hemodynamics-and-arterial-stiffness
#10
Snigdha Jain, Indira Gurubhagavatula, Raymond Townsend, Samuel T Kuna, Karen Teff, Thomas A Wadden, Jesse Chittams, Alexandra L Hanlon, Greg Maislin, Hassam Saif, Preston Broderick, Zeshan Ahmad, Allan I Pack, Julio A Chirinos
Obesity and obstructive sleep apnea tend to coexist. Little is known about the effects of obstructive sleep apnea, obesity, or their treatment on central aortic pressures and large artery stiffness. We randomized 139 adults with obesity (body mass index >30 kg/m(2)) and moderate-to-severe obstructive sleep apnea to (1) continuous positive airway pressure (CPAP) therapy (n=45), (2) weight loss (WL) therapy (n=48), or (3) combined CPAP and WL (n=46) for 24 weeks. We assessed the effect of these interventions on central pressures and carotid-femoral pulse wave velocity (a measure of large artery stiffness), measured with arterial tonometry...
October 16, 2017: Hypertension
https://www.readbyqxmd.com/read/29037199/assessment-of-local-pulse-wave-velocity-distribution-in-mice-using-k-t-blast-pc-cmr-with-semi-automatic-area-segmentation
#11
Volker Herold, Stefan Herz, Patrick Winter, Fabian Tobias Gutjahr, Kristina Andelovic, Wolfgang Rudolf Bauer, Peter Michael Jakob
BACKGROUND: Local aortic pulse wave velocity (PWV) is a measure for vascular stiffness and has a predictive value for cardiovascular events. Ultra high field CMR scanners allow the quantification of local PWV in mice, however these systems are yet unable to monitor the distribution of local elasticities. METHODS: In the present study we provide a new accelerated method to quantify local aortic PWV in mice with phase-contrast cardiovascular magnetic resonance imaging (PC-CMR) at 17...
October 16, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29035944/association-between-common-carotid-artery-diameter-and-target-organ-damage-in-essential-hypertension
#12
Yan Yang, Yan Wang, Jianzhong Xu, Pingjin Gao
OBJECTIVES: To investigate the relationship between common carotid artery diameter (CCA-D) and target organ damage (TOD) in essential hypertension. METHODS AND RESULTS: A total of 200 essential hypertensive patients were enrolled (mean age 62.5 ± 9.5, men 59.0%) and were classified into two groups by the height-adjusted mean median of CCA-D: patients with CCA-D/height less than 3.905 mm/m (n = 100, 50%) and patients with CCA-D/height more than 3.905 mm/m (n = 100, 50%)...
October 13, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/29035941/arterial-stiffness-and-cardiometabolic-phenotype-of-cameroonian-pygmies-and-bantus
#13
William Ngatchou, Daniel Lemogoum, Christian Mélot, Virginie Guimfacq, Philippe van de Borne, Jean Claude Wautrecht, Michel P Hermans, Luc Van Bortel, Marc Leeman
BACKGROUND: Pygmies living in the Central African rainforest with a traditional hunter-gatherer lifestyle have a low incidence of cardiovascular diseases. Because of progressive loss of traditional habitat and ancestral lands, some Pygmies have migrated to urban areas and adopt specific Bantu lifestyles such as increased salt consumption and a sedentary way of life. We tested the hypothesis that migrant Pygmies could present with hemodynamic and metabolic characteristics different from those of traditional in-situ Pygmies and possibly closer to those of Bantu farmers...
October 13, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/29035100/serum-lipid-level-and-lifestyles-are-associated-with-carotid-femoral-pulse-wave-velocity-among-adults-4-4-year-prospectively-longitudinal-follow-up-of-a-clinical-trial
#14
XiaoXiao Zhao, Hongyu Wang, LiuJin Bo, Hongwei Zhao, Lihong Li, Yingyan Zhou
Lifestyle modifications are recommended as the initial treatment for high blood pressure. The influence of dyslipidemia might be via moderate arterial stiffness, which results in hypertension and cardiovascular disease. We used data from a subgroup of the lifestyle, level of serum lipids/carotid femoral-pulse wave velocity (CF-PWV) Susceptibility BEST Study, a population-based study of community-dwelling adults aged 45-75 years. The serum lipid level and CF-PWV were measured at baseline, and lifestyle such as smoking status, sleeping habits, and the level of oil or salt intake was determined with the use of a validated questionnaire during follow-up...
October 16, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/29024538/retinal-pulse-wave-velocity-measurement-using-spectral-domain-optical-coherence-tomography
#15
Qian Li, Lin Li, Shanhui Fan, Cuixia Dai, Xinyu Chai, Chuanqing Zhou
The human eyes provide a natural window for noninvasive measurement of the pulse wave velocity (PWV) of small arteries. By measuring the retinal PWV, the stiffness of small arteries can be assessed, which may better detect early vascular diseases. Therefore, retinal PWV measurement has attracted increasing attention. In this study, a jump-scanning method was proposed for non-invasive measurement of retinal PWV using spectral-domain OCT. The jump-scanning method uses the phase-resolved Doppler OCT to obtain the pulse shapes...
October 12, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/29022872/arterial-stiffness-is-associated-with-depression-in-middle-aged-men-the-maastricht-study
#16
Veronica Onete, Ronald M Henry, Simone J S Sep, Annemarie Koster, Carla J van der Kallen, Pieter C Dagnelie, Nicolaas Schaper, Sebastian Köhler, Koen Reesink, Coen D A Stehouwer, Miranda T Schram
BACKGROUND: Arterial stiffening may underlie the association between depression and cardiovascular disease (CVD), but reported data are inconsistent. We investigated the associations between aortic stiffness and major depressive disorder (MDD) and depressive symptoms, and whether these differed by sex and age. METHODS: We measured carotid to femoral pulse wave velocity (cfPWV) using applanation tonometry, and we assessed depression using the Mini-International Neuropsychiatric Interview (MINI) and the Patient Health Questionnaire-9 (PHQ-9) in a cohort of participants from The Maastricht Study...
October 12, 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/29022570/arterial-stiffness-as-a-risk-factor-for-clinical-hypertension
#17
REVIEW
Michel E Safar
In patients with uncomplicated essential hypertension, cardiac output remains within normal ranges and intravascular volume is normal or low, assuming the presence of a sufficient Windkessel effect and usual resistance and compliance calculations. However, mean circulatory pressure is elevated in these patients. In addition, vascular resistance is augmented, and most importantly, the viscoelasticity of the cardiovascular system is substantially impaired. Such considerations are essential to understanding the mechanisms behind carotid-femoral arterial stiffness, a major risk factor in individuals with hypertension...
October 12, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/29018628/combined-moderate-and-high-intensity-exercise-with-dietary-restriction-improves-cardiac-autonomic-function-associated-with-a-reduction-in-central-and-systemic-arterial-stiffness-in-obese-adults-a-clinical-trial
#18
Min Hu, Shen Wang, Dan Wang, Qinhao Lai, Xiaoying Chen, Shiwei Duan, Mengke Zhao, Junhao Huang
OBJECTIVE: The present study aimed to assess the effects of exercise with dietary restriction on cardiac autonomic activity, arterial stiffness, and cardiovascular biomarkers in obese individuals. METHODS: Seventeen obese adults completed an 8-week exercise and dietary program. Anthropometry, body composition, and multiple biochemical markers were measured. We used carotid-femoral pulse wave velocity (cfPWV), brachial-ankle pulse wave velocity (baPWV), central blood pressure, and augmentation index (AIx) to assess arterial stiffness...
2017: PeerJ
https://www.readbyqxmd.com/read/29018026/inflammation-and-aortic-stiffness-an-individual-participant-data-meta-analysis-in-patients-with-inflammatory-bowel-disease
#19
REVIEW
Luca Zanoli, Pierre Boutouyrie, Pasquale Fatuzzo, Antonio Granata, Paolo Lentini, Kadir Oztürk, Maria Cappello, Eleni Theocharidou, Antonino Tuttolomondo, Antonio Pinto, Calogero Cammà, Anna Licata, Julien Blanco, Stefania Rastelli, Gaetano Inserra, Pietro Castellino, Stephane Laurent
BACKGROUND: The recent finding that aortic pulse wave velocity (aPWV) is increased in patients with inflammatory bowel disease may explain why the cardiovascular risk is increased despite the low prevalence of traditional cardiovascular risk factors. We aimed to test whether inflammation is associated with aortic stiffening in this setting after adjustment for major confounders and to perform subgroup analyses. METHODS AND RESULTS: A systematic literature search for aPWV in inflammatory bowel disease was performed using PubMed, Scopus, Web of Science, and Google Scholar databases (last accessed May 7, 2017)...
October 10, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28992237/impacts-of-metabolic-syndrome-scores-on-cerebrovascular-conductance-are-mediated-by-arterial-stiffening
#20
Evan P Pasha, Alex C Birdsill, Stephanie Oleson, Andreana P Haley, Hirofumi Tanaka
BACKGROUND: Individuals with metabolic syndrome (MetS) exhibit reduced cerebral blood flow. The mechanisms of this reduction remain unknown but arterial stiffening has been implicated as a contributor. We determined if MetS was associated with reduced cerebral blood flow at midlife, and if so, whether arterial stiffness was responsible for mediating their relation. METHODS: Middle-aged (40-60 years) community dwelling adults (n = 83) were studied. MetS score was calculated for each subject...
July 31, 2017: American Journal of Hypertension
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