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https://www.readbyqxmd.com/read/28448191/total-arterial-compliance-estimated-by-a-novel-method-is-better-related-to-left-ventricular-mass-compared-to-aortic-pulse-wave-velocity-the-safar-study
#1
Theodore G Papaioannou, Athanase D Protogerou, Antonis Argyris, Evangelia Aissopou, George Georgiopoulos, Efthimia Nasothimiou, Christos Tountas, Petros P Sfikakis, Nikolaos Stergiopulos, Dimitrios Tousoulis
The investigation of the association between total arterial compliance (CT)-estimated by a novel technique-with left ventricular mass (LVM) and hypertrophy (LVH). Our hypothesis was that CT may be better related to LVM compared to the gold-standard regional aortic stiffness. Within the frame of the ongoing cross-sectional study "SAFAR," 226 subjects with established hypertension or with suspected hypertension underwent blood pressure (BP) assessment, carotid-to-femoral pulse wave velocity (cf-PWV), and echocardiographic measurement of LVM...
2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28445206/independent-effects-of-blood-pressure-and-parathyroid-hormone-on-aortic-pulse-wave-velocity-in-untreated-chinese-patients
#2
Yi-Bang Cheng, Li-Hua Li, Qian-Hui Guo, Fei-Ka Li, Qi-Fang Huang, Chang-Sheng Sheng, Ji-Guang Wang, Jan A Staessen, Yan Li
OBJECTIVE: Whether or not calcium-regulating hormones stiffen arteries independent of blood pressure (BP) is uncertain. We investigated the independent associations of carotid-femoral pulse wave velocity (PWV) with 25-hydroxy-vitamin D [25(OH)D], parathyroid hormone (PTH) and 24-h ambulatory BP in untreated Chinese patients. METHODS: Consecutive untreated patients referred for ambulatory BP monitoring were recruited. PWV was measured with a high-fidelity micromanometer and the SphygmoCor software (AtCor Medical, West Ryde, New South Wales, Australia)...
April 25, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28441698/ambulatory-arterial-stiffness-index-and-its-role-in-assessing-arterial-stiffness-in-dialysis-patients
#3
Wenjin Liu, Jiajun Zhou, Jianping Chen, Meijuan Meng, Xiurong Li, Chaoqing Gao, Jianmei Zhou, Liang Wang, Zhuxing Sun, Hong Chu, Wei Fan, Youwei Bai, Junwei Yang
OBJECTIVE: Ambulatory arterial stiffness index (AASI) is a parameter derived from ambulatory blood pressure (ABP) readings. It is calculated as 1 minus the linear slope of DBP on SBP. We tested its value in assessing arterial stiffness in dialysis patients. METHODS: We performed a cross-sectional analysis of the baseline data from a cohort study. A total of 344 patients on maintenance hemodialysis from six tertiary hospitals were included. All patients underwent ABP monitoring and carotid-femoral pulse wave velocity (cfPWV) measurement...
June 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28441695/increased-high-risk-coronary-plaque-burden-is-associated-with-arterial-stiffness-in-patients-with-type-2-diabetes-without-clinical-signs-of-coronary-artery-disease-a-computed-tomography-angiography-study
#4
Kristian L Funck, Esben Laugesen, Kristian Øvrehus, Jesper M Jensen, Bjarne L Nørgaard, Damini Dey, Troels K Hansen, Per L Poulsen
OBJECTIVES: Arterial stiffness and subclinical coronary atherosclerosis may yield valuable information on cardiovascular risk. We aimed to characterize coronary atherosclerosis in asymptomatic patients with type 2 diabetes and healthy controls and to investigate the association between baseline arterial stiffness and coronary plaque volumes after 5-year follow-up. METHODS: Data from 45 patients and 61 matched controls were available for coronary plaque assessment...
June 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28441693/sex-differences-in-fat-distribution-influence-the-association-between-bmi-and-arterial-stiffness
#5
Inge C L van den Munckhof, Suzanne Holewijn, Jacqueline de Graaf, Joost H W Rutten
CONTEXT AND OBJECTIVE: The increase in arterial stiffness in patients with the metabolic syndrome is strongly related to the amount of visceral adipose tissue. In clinical practice, anthropometric measurements such as BMI and waist circumference are commonly used to assess general and abdominal adiposity. Waist circumference is a composite measure of subcutaneous and visceral abdominal adipose tissue. As the distribution of intra-abdominal fat differs between men and women, we investigated the sex-specific associations between different anthropometric measures for general and abdominal obesity with arterial stiffness...
June 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28441665/microrna-1185-promotes-arterial-stiffness-though-modulating-vcam-1-and-e-selectin-expression
#6
Haoyuan Deng, Zhenfeng Song, Huan Xu, Xinrui Deng, Qiao Zhang, Hongyu Chen, Yanjiao Wang, Ying Qin, Ying Li
BACKGROUND/AIMS: Atherosclerosis is the primary cause of cardiovascular ischaemic events; arterial stiffness is a characteristic of the atherosclerotic process. MicroRNAs (miRNAs) have been revealed as crucial modulators of atherosclerosis. However, the role of arterial stiffness-related miRNAs in the atherosclerotic process is still unclear. METHODS: Four hundred six participants from Northern China were enrolled in this study. Circulating miR-1185 and adhesion molecule levels were measured...
April 20, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28440670/cardiac-magnetic-resonance-based-evaluation-of-aortic-stiffness-and-epicardial-fat-volume-in-patients-with-hypertension-diabetes-mellitus-and-myocardial-infarction
#7
Rami Homsi, Alois M Sprinkart, Juergen Gieseke, Michael Meier-Schroers, Seyrani Yuecel, Stefan Fischer, Jennifer Nadal, Darius Dabir, Julian A Luetkens, Daniel L Kuetting, Hans H Schild, Daniel K Thomas
Background Aortic stiffness and epicardial fat relate to cardiovascular risk. Their relationship with each other and their role with hypertension, diabetes mellitus (DM), and myocardial infarction (MI) can be evaluated by cardiac magnetic resonance (CMR). Purpose To explore an association between aortic stiffness and epicardial as well as paracardial fat volume (EFV and ParaFV, respectively) in hypertensive patients and to relate the results to the presence of DM and MI. Material and Methods A total of 156 hypertensive and 20 non-hypertensive participants were examined at 1...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28438905/brachial-ankle-pulse-wave-velocity-and-the-risk-prediction-of-cardiovascular-disease-an-individual-participant-data-meta-analysis
#8
Toshiaki Ohkuma, Toshiharu Ninomiya, Hirofumi Tomiyama, Kazuomi Kario, Satoshi Hoshide, Yoshikuni Kita, Toyoshi Inoguchi, Yasutaka Maeda, Katsuhiko Kohara, Yasuharu Tabara, Motoyuki Nakamura, Takayoshi Ohkubo, Hirotaka Watada, Masanori Munakata, Mitsuru Ohishi, Norihisa Ito, Michinari Nakamura, Tetsuo Shoji, Charalambos Vlachopoulos, Akira Yamashina
An individual participant data meta-analysis was conducted in the data of 14 673 Japanese participants without a history of cardiovascular disease (CVD) to examine the association of the brachial-ankle pulse wave velocity (baPWV) with the risk of development of CVD. During the average 6.4-year follow-up period, 687 participants died and 735 developed cardiovascular events. A higher baPWV was significantly associated with a higher risk of CVD, even after adjustments for conventional risk factors (P for trend <0...
April 24, 2017: Hypertension
https://www.readbyqxmd.com/read/28438216/improved-pressure-contour-analysis-for-estimating-cardiac-stroke-volume-using-pulse-wave-velocity-measurement
#9
Shun Kamoi, Christopher Pretty, Joel Balmer, Shaun Davidson, Antoine Pironet, Thomas Desaive, Geoffrey M Shaw, J Geoffrey Chase
BACKGROUND: Pressure contour analysis is commonly used to estimate cardiac performance for patients suffering from cardiovascular dysfunction in the intensive care unit. However, the existing techniques for continuous estimation of stroke volume (SV) from pressure measurement can be unreliable during hemodynamic instability, which is inevitable for patients requiring significant treatment. For this reason, pressure contour methods must be improved to capture changes in vascular properties and thus provide accurate conversion from pressure to flow...
April 24, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28437966/energy-scaling-and-extended-tunability-of-terahertz-wave-parametric-oscillator-with-mgo-doped-near-stoichiometric-linbo-sub-3-sub-crystal
#10
Yuye Wang, Longhuang Tang, Degang Xu, Chao Yan, Yixin He, Jia Shi, Dexian Yan, Hongxiang Liu, Meitong Nie, Jiachen Feng, Jianquan Yao
A widely tunable, high-energy terahertz wave parametric oscillator based on 1 mol. % MgO-doped near-stoichiometric LiNbO<sub>3</sub> crystal has been demonstrated with 1064 nm nanosecond pulsed laser pumping. The tunable range of 1.16 to 4.64 THz was achieved. The maximum THz wave output energy of 17.49 μJ was obtained at 1.88 THz under the pump energy of 165 mJ/pulse, corresponding to the THz wave conversion efficiency of 1.06 × 10<sup>-4</sup> and the photon conversion efficiency of 1...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437955/cyclic-coding-for-brillouin-optical-time-domain-analyzers-using-probe-dithering
#11
Haritz Iribas, Alayn Loayssa, Florian Sauser, Miguel Llera, Sébastien Le Floch
We study the performance limits of mono-color cyclic coding applied to Brillouin optical time-domain analysis (BOTDA) sensors that use probe wave dithering. BOTDA analyzers with dithering of the probe use a dual-probe-sideband setup in which an optical frequency modulation of the probe waves along the fiber is introduced. This avoids non-local effects while keeping the Brillouin threshold at its highest level, thus preventing the spontaneous Brillouin scattering from generating noise in the deployed sensing fiber...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437199/the-correlation-of-arterial-stiffness-with-biophysical-parameters-and-blood-biochemistry
#12
Anamil M Khiyami, Fiona J Dore, Aytan Mammadova, Richard L Amdur, Sabyasachi Sen
INTRODUCTION: Type 2 diabetes presents with numerous macrovascular and microvascular impairments, which in turn lead to various co-morbidities. Vascular co-morbidities can be seen when examining arterial stiffness (AS), which is a predictor for endothelial health and cardiovascular disease risk. Pulse wave analysis (PWA) and pulse wave velocity (PWV) are two tests that are commonly used to measure AS. Currently, disease states and progression are tracked via blood biochemistry. These gold standards in monitoring diabetes are expensive and need optimization...
May 2017: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/28434461/effect-of-black-tea-consumption-on-radial-blood-pulse-spectrum-and-cognitive-health
#13
Chi-Wei Chang, Sheng-Hung Wang, Ming-Yie Jan, Wei-Kung Wang
Black tea consumption has been proven to improve endothelial function and to lower the risk of stroke and cognitive impairment. Several effects of black tea on cardiovascular system had been surveyed. However, the black tea effect on pressure pulse spectrum remains unknown. The study was aimed to investigate the influence of black tea on radial blood pressure and Pulse Spectrum. Fourteen healthy subjects received water and single doses of black tea (0.05g/Kg) in separate weeks. The radial blood pressure and pulse wave were measured and the pressure pulses were evaluated using harmonic analysis...
April 2017: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/28433439/cardiac-amyloidosis-shows-decreased-diastolic-function-as-assessed-by-echocardiographic-parameterized-diastolic-filling
#14
Katrin Salman, Peter A Cain, Benjamin T Fitzgerald, Martin G Sundqvist, Martin Ugander
Cardiac amyloidosis is a rare but serious condition with poor survival. One of the early findings by echocardiography is impaired diastolic function, even before the development of cardiac symptoms. Early diagnosis is important, permitting initiation of treatment aimed at improving survival. The parameterized diastolic filling (PDF) formalism entails describing the left ventricular filling pattern during early diastole using the mathematical equation for the motion of a damped harmonic oscillator. We hypothesized that echocardiographic PDF analysis could detect differences in diastolic function between patients with amyloidosis and controls...
April 19, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28429921/relationship-between-dietary-patterns-and-brachial-ankle-pulse-wave-velocity-among-middle-aged-adults-in-japan
#15
Shota Moyama, Kazuhiro Minami, Mihiro Yano, Masumi Okumura, Susumu Hayashi, Hiroshi Takayama, Akira Yorimoto
BACKGROUND AND OBJECTIVES: Arterial stiffness is a leading cause of cardiovascular disease (CVD), and it is considered to be affected by dietary intake. However, few studies have examined the relationship between major dietary patterns and brachial-ankle pulse wave velocity (baPWV) among Japanese middle-aged subjects. We studied whether major dietary patterns were associated with baPWV in this population. METHODS AND STUDY DESIGN: Between 2009 and 2012, 70 Japanese middle-aged subjects (39 men and 31 women) with no history of stroke, coronary heart disease, or cancer were studied...
May 2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28429850/association-of-obstructive-sleep-apnea-with-arterial-stiffness-and-nondipping-blood-pressure-in-patients-with-hypertension
#16
Raimundo Jenner, Fernanda Fatureto-Borges, Valéria Costa-Hong, Heno F Lopes, Sandra H Teixeira, Elias Marum, Dante A M Giorgi, Fernanda M Consolim-Colombo, Luiz A Bortolotto, Geraldo Lorenzi-Filho, Eduardo M Krieger, Luciano F Drager
Whether sex influences the association of obstructive sleep apnea (OSA) with markers of cardiovascular risk in patients with hypertension is unknown. In this study, 95 hypertensive participants underwent carotid-femoral pulse wave velocity, 24-hour ambulatory blood pressure monitoring, echocardiogram, and polysomnography after a 30-day standardized treatment with hydrochlorothiazide plus enalapril or losartan. OSA was present in 52 patients. Compared with non-OSA patients, pulse wave velocity values were higher in the OSA group (men: 11...
April 21, 2017: Journal of Clinical Hypertension
https://www.readbyqxmd.com/read/28412277/the-association-of-endothelial-function-and-tone-by-digital-arterial-tonometry-with-mri-left-ventricular-mass-in-african-americans-the-jackson-heart-study
#17
Avnish Tripathi, Emelia J Benjamin, Solomon K Musani, Naomi M Hamburg, Connie W Tsao, Arti Saraswat, Ramachandran S Vasan, Gary F Mitchell, Ervin R Fox
Peripheral vascular endothelial dysfunction assessed by digital peripheral arterial tonometry (PAT) has been associated with risk for adverse cardiovascular events. We examined the relations of peripheral microvascular dysfunction and left ventricular mass in a community-based cohort of African Americans. We examined participants of the Jackson Heart Study who had PAT and cardiac magnetic resonance imaging evaluations between 2007 and 2013. Consistent with pertinent literature, left ventricular mass index (LVMI) was adjusted for body size by indexing to height(2...
March 27, 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/28411073/arterial-stiffness-and-elevated-left-ventricular-filling-pressure-in-patients-at-risk-for-the-development-or-a-previous-diagnosis-of-hf-a-subgroup-analysis-from-the-diast-chf-study
#18
Claus Lüers, Tobias Daniel Trippel, Sebastian Seeländer, Rolf Wachter, Gerd Hasenfuss, Ruhdja Lindhorst, Anna Bobenko, Kathleen Nolte, Burkert Pieske, Frank Edelmann
Left ventricular filling pressure (LVFP) is a marker for diastolic dysfunction and heart failure (HF) with preserved ejection fraction (pEF). The interaction between arterial stiffness (AS) and elevated LVFP has not been sufficiently investigated. In 257 patients with preserved left ventricular ejection fraction (mean age: 66 years, 53% female, mean left ventricular ejection fraction: 61%) and at least one cardiovascular risk factor (eg, hypertension and diabetes) for the development of HF or a previous diagnosis of HF, LVFP was estimated in accordance with the recommendations of the American Society of Echocardiography (elevated when E/e' ≥ 13, left atrial volume index ≥ 34 mL/m(2))...
March 27, 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/28409805/continuous-variable-quantum-key-distribution-with-a-real-local-oscillator-using-simultaneous-pilot-signals
#19
Sebastian Kleis, Max Rueckmann, Christian G Schaeffer
In this Letter, we propose a novel implementation of continuous variable quantum key distribution that operates with a real local oscillator placed at the receiver site. In addition, pulsing of the continuous wave laser sources is not required, leading to an extraordinary practical and secure setup. It is suitable for arbitrary schemes based on modulated coherent states and heterodyne detection. The shown results include transmission experiments, as well as an excess noise analysis applying a discrete 8-state phase modulation...
April 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28409509/fitness-can-be-a-determinant-of-arterial-stiffness-in-healthy-adult-men-a-cross-sectional-study
#20
Jin-Wook Chung, Mi-Lyang Kim, Youngsoo Jin, Yonghwan Kim, Jeeyoung Hong
BACKGROUND: Fitness is known to influence arterial stiffness. This study aimed to assess differences in cardiorespiratory endurance, muscular strength, and flexibility according to arterial stiffness, based on sex and age. METHODS: We enrolled 1,590 healthy adults (men: 1,242, women: 348) who were free of metabolic syndrome. We measured cardiorespiratory endurance in an exercise stress test on a treadmill, muscular strength by a grip test, and flexibility by upper body forward-bends from a standing position...
April 13, 2017: Journal of Sports Medicine and Physical Fitness
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