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https://www.readbyqxmd.com/read/29339276/reliability-of-oscillometric-central-blood-pressure-and-central-systolic-loading-in-individuals-over-50-years-effects-of-posture-and-fasting
#1
Andrew Mitchelmore, Lee Stoner, Danielle Lambrick, Simon Jobson, James Faulkner
BACKGROUND AND AIMS: The between-day reliability of oscillometric pulse wave analysis has been demonstrated in a young, healthy population but not in an older sample. This study examined the between-day reliability of the SphygmoCor XCEL in individuals over 50 years. As blood pressure is measured in a range of postures and fasting states (supine/seated, fasted/non-fasted), this study also investigated the effect of these variables on central blood pressure and central systolic loading...
December 27, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29335614/reliability-of-pulse-waveform-separation-analysis-responses-to-an-orthostatic-challenge
#2
Lee Stoner, Keeron Stone, Erik D Hanson, James Faulkner, Simon Fryer, Daniel Credeur
Cardiovascular autonomic nervous system function can be assessed using an orthostatic challenge to induce arterial wave reflection. While arterial reflection is typically estimated using a central augmentation index, a superior estimation can be obtained using pulse wave separation analysis to estimate the aortic backward pressure wave (Pb). However, to be of value in a clinical or research setting, an assessment tool must be precise (reliable). Therefore, this study sought to determine the measurement precision of Pb responses to a modified tilt-table test...
January 15, 2018: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/29334490/differential-impact-of-local-and-regional-aortic-stiffness-on-left-ventricular-remodeling-a-cardiovascular-magnetic-resonance-study
#3
Thiago Quinaglia, Mourad Z Bensalah, Emilie Bollache, Nadjia Kachenoura, Gilles Soulat, Pierre Boutouyrie, Stéphane Laurent, Elie Mousseaux
BACKGROUND: Left ventricular (LV) remodeling and aortic stiffness have independent predictive value for all causes and cardiovascular mortality. Because elastic properties of the arterial wall vary along the aortic pathway, we hypothesized that local and regional aortic stiffness could differently impact on LV remodeling. METHODS AND RESULTS: Regional aortic stiffness was determined from carotid-femoral pulse wave velocity (cfPWV) measured by aplanation tonometry...
January 13, 2018: Journal of Hypertension
https://www.readbyqxmd.com/read/29334489/association-between-arterial-stiffness-and-wave-reflection-with-subsequent-development-of-placental-mediated-diseases-during-pregnancy-findings-of-a-systematic-review-and-meta-analysis
#4
Mohamed Waseem Osman, Mintu Nath, Eamonn Breslin, Asma Khalil, David R Webb, Thompson G Robinson, Hatem A Mousa
OBJECTIVE: We present a comprehensive systematic review of published literature to examine, whether arterial stiffness and wave reflection measurements during pregnancy differed between healthy patients and patients with placental-mediated diseases including preeclampsia (PET), small for gestational age (SGA), fetal death, and placental abruption, and a quantitative assessment of the findings using the meta-analysis approach. METHODS: We searched Medline, Embase, and The Cochrane Library for studies of arterial stiffness in pregnancy, analyzed pregnancy outcomes and conducted the meta-analysis of data evaluated by trimesters of pregnancy...
January 13, 2018: Journal of Hypertension
https://www.readbyqxmd.com/read/29334078/high-prf-ultrafast-sliding-compound-doppler-imaging-fully-qualitative-and-quantitative-analysis-of-blood-flow
#5
Jinbum Kang, Won Seuk Jang, Yangmo Yoo
Ultrafast compound Doppler imaging based on plane-wave excitation (UCDI) can be used to evaluate cardiovascular diseases using high frame rates. In particular, it provides a fully quantifiable flow analysis over a large region of interest with high spatio-temporal resolution. However, the pulse-repetition frequency (PRF) in the UCDI method is limited for high-velocity flow imaging since it leverages between the number of plane-wave angles (<i>N</i>) and acquisition time. In this paper, we present high PRF ultrafast sliding compound Doppler imaging method (HUSDI) to improve quantitative flow analysis...
January 15, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29330911/title-prognostic-significance-of-arterial-stiffness-and-osteoprotegerin-in-patients-with-stable-coronary-artery-disease
#6
Gerasimos Siasos, Evangelos Oikonomou, Konstantinos Maniatis, Georgios Georgiopoulos, Eleni Kokkou, Vasiliki Tsigkou, Marina Zaromitidou, Alexis Antonopoulos, Manolis Vavuranakis, Christodoulos Stefanadis, Athanasios G Papavassiliou, Dimitris Tousoulis
BACKGROUND: Arterial stiffness and vascular calcification significantly contribute to coronary atherosclerosis progression. The prognostic value of increased arterial stiffness and vascular calcification in subjects with stable coronary artery disease (CAD) after percutaneous coronary intervention(PCI) is currently under question. MATERIALS AND METHODS: We randomly enrolled 262 patients with stable CAD one month after successful PCI. Carotid femoral pulse wave velocity (PWV) was measured as a well-established index of central aortic stiffness...
January 13, 2018: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29324983/pulsatile-hemodynamics-are-associated-with-exercise-capacity-in-patients-with-exertional-dyspnea-and-preserved-left-ventricular-ejection-fraction
#7
M Broufa, S Wassertheurer, B Hametner, R Zweiker, R K Binder, T Weber
Background: Pulsatile hemodynamics are associated with left ventricular filling pressures and diastolic dysfunction. We investigated their relationship with maximum workload and peak oxygen uptake (peak VO2) in patients with exertional dyspnea and preserved left ventricular ejection fraction (LVEF). Methods: Radial waveforms from tonometry were processed with a transfer function, pulse wave analysis and wave separation analysis, yielding central aortic pressures and measures of forward (amplitude of forward wave-Pf) and reflected waves (Augmentation Index-AIx, Augmentation Pressure-AP, amplitude of backward wave-Pb) and their ratio (Reflection Magnitude-RM)...
January 9, 2018: American Journal of Hypertension
https://www.readbyqxmd.com/read/29324835/subject-specific-pulse-wave-propagation-modeling-towards-enhancement-of-cardiovascular-assessment-methods
#8
Jan Poleszczuk, Malgorzata Debowska, Wojciech Dabrowski, Alicja Wojcik-Zaluska, Wojciech Zaluska, Jacek Waniewski
Cardiovascular diseases are the leading cause of death worldwide. Pulse wave analysis (PWA) technique, which reconstructs and analyses aortic pressure waveform based on non-invasive peripheral pressure recording, became an important bioassay for cardiovascular assessment in a general population. The aim of our study was to establish a pulse wave propagation modeling framework capable of matching clinical PWA data from healthy individuals on a per-subject basis. Radial pressure profiles from 20 healthy individuals (10 males, 10 females), with mean age of 42 ± 10 years, were recorded using applanation tonometry (SphygmoCor, AtCor Medical, Australia) and used to estimate subject-specific parameters of mathematical model of blood flow in the system of fifty-five arteries...
2018: PloS One
https://www.readbyqxmd.com/read/29316158/reduced-stroke-distance-of-the-left-ventricular-outflow-tract-is-independently-associated-with-long-term-mortality-in%C3%A2-patients-hospitalized-due-to-heart-failure
#9
You Zhong, Qays Almodares, JieFu Yang, Fang Wang, Michael Fu, Magnus C Johansson
PURPOSE: Reduced blood circulation is an important feature of heart failure, and Doppler stroke distance of the left ventricular outflow tract is a measure of forward stroke volume. Several echocardiographic parameters have known prognostic implications in heart failure, but the prognostic implications of stroke distance in relation to other parameters are insufficiently known. The aim was therefore to test the hypothesis that stroke distance is associated with five-year all-cause mortality, independently of other echocardiography variables, and that stroke distance has added long-term prognostic value...
January 9, 2018: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/29314768/medium-and-long-chain-acylcarnitines-are-associated-with-osteoarthritis-severity-and-arterial-stiffness-in-end-stage-osteoarthritis-patients-a-case-control-study
#10
Kaspar Tootsi, Jaak Kals, Mihkel Zilmer, Kaido Paapstel, Aigar Ottas, Aare Märtson
AIM: Arterial pathology has been suggested to be involved in osteoarthritis (OA). Metabolic profiling enables the determination of low-molecular-weight molecules, which might further explain the pathogenesis of OA and its relationship with cardiovascular diseases (CVD). The aim of this study was to compare the metabolic profile of lipid metabolism-related compounds and arterial stiffness in OA patients and in controls. METHOD: The serum of 70 end-stage OA patients prior to joint replacement surgery and 82 age-matched controls were analyzed by the AbsoluteIDQ™ p180 kit (BIOCRATES Life Sciences AG, Innsbruck, Austria) using the targeted metabolomic approach...
January 4, 2018: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/29310327/prevalence-and-clinical-characteristics-of-pseudohypertension-in-elderly-patients-prepared-for-coronary-artery-angiography
#11
Xixi Dai, Haiya Wang, Ningyuan Fang
BACKGROUND: Pseudohypertension (PHT) can cause adverse effects in the elderly owing to administration of antihypertension therapy. The present study aimed to determine the prevalence of PHT in the elderly and associated risk factors to investigate a noninvasive method of detection of PHT. METHODS: We recruited 151 patients (age ≥60 years) who underwent coronary angiography. Demographic and clinical data were collected from the patients. During coronary angiography, intrabrachial arterial pressure and indirect blood pressure were measured...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29304861/high-density-lipoprotein-3-cholesterol-is-a-predictive-factor-for-arterial-stiffness-a-community-based-4-8-year-prospective-study
#12
Fan Wang, Xiaona Wang, Ping Ye, Ruihua Cao, Yun Zhang, Yue Qi, Dong Zhao
BACKGROUND: Although drug trials with niacin and cholesteryl ester transfer protein inhibitors that substantially increase high-density lipoprotein-cholesterol (HDL-C) failed to reduce the risk of coronary heart disease, HDL protection of the cardiovascular system cannot be easily denied. Hence, it may be HDL subfractions that are responsible for the long-held and consistent cardioprotective association of HDL. Arterial stiffness has been increasingly recognized as a strong predictor of subclinical vascular disease, atherosclerotic disease, and cardiovascular mortality...
January 5, 2018: Lipids in Health and Disease
https://www.readbyqxmd.com/read/29304064/hyperleptinemia-positively-associated-with-central-arterial-stiffness-in-hemodialysis-patients
#13
Chiu-Huang Kuo, Yu-Li Lin, Chung-Jen Lee, Chih-Hsien Wang, Yu-Hsien Lai, Hung-Hsiang Liou, Bang-Gee Hsu
OBJECTIVE: Leptin plays a role in stimulating vascular inflammation, vascular smooth muscle hypertrophy, and augmenting blood pressure, which contributes to the pathogenesis of atherosclerosis and leads to arterial stiffness. This vascular damage, measured by carotid-femoral pulse wave velocity (cfPWV), is recognized as an independent predictor of cardiovascular mortality in hemodialysis (HD) patients. The aim of this study was to evaluate the relationship between serum leptin and arterial stiffness in HD patients...
2018: PloS One
https://www.readbyqxmd.com/read/29303831/arterial-stiffness-and-peripheral-vascular-resistance-in-offspring-of-hypertensive-parents-influence-of-sex-and-other-confounders
#14
Niels Henrik Buus, Rasmus K Carlsen, Dinah S Khatir, Hans Eiskjær, Michael J Mulvany, Karin Skov
AIM: Established essential hypertension is associated with increased arterial stiffness and peripheral resistance, but the extent of vascular changes in persons genetically predisposed for essential hypertension is uncertain. METHODS: Participants from the Danish Hypertension Prevention Project (DHyPP) (both parents hypertensive) (n = 95, 41 ± 1 years, 53% men) were compared with available spouses (n = 45, 41 ± 1 years) using measurements of ambulatory blood pressure (BP), left ventricular mass index (LVMI), pulse wave velocity, central BP and augmentation index (AIx) in addition to forearm resting and minimal resistance [forearm resting vascular resistance (Rrest) and forearm minimal vascular resistance (Rmin)]...
January 4, 2018: Journal of Hypertension
https://www.readbyqxmd.com/read/29288632/association-of-vascular-indices-with-novel-circulating-biomarkers-as-prognostic-factors-for-cardiovascular-complications-in-patients-with-type-2-diabetes-mellitus
#15
Katerina K Naka, Katerina Papathanassiou, Aris Bechlioulis, Konstantinos Pappas, Stelios Tigas, Dimitrios Makriyiannis, Sophia Antoniou, Nikolaos Kazakos, Alexandra Margeli, Ioannis Papassotiriou, Agathocles Tsatsoulis, Lampros K Michalis
BACKGROUND: The pathophysiology of atherosclerosis in type 2 diabetes mellitus (T2DM) is multifactorial. The association of vascular indices with circulating biomarkers of inflammation and insulin resistance and their role in the long-term cardiovascular prognosis in T2DM patients were currently investigated. PATIENTS AND METHODS: Patients with T2DM and poor glycemic control without known cardiovascular diseases (n=119) at baseline were enrolled and followed for about 9years...
December 27, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/29288157/history-of-adverse-pregnancy-outcomes-blood-pressure-and-subclinical-vascular-measures-in-late-midlife-swan-study-of-women-s-health-across-the-nation
#16
Yamnia I Cortés, Janet M Catov, Maria Brooks, Siobán D Harlow, Carmen R Isasi, Elizabeth A Jackson, Karen A Matthews, Rebecca C Thurston, Emma Barinas-Mitchell
BACKGROUND: Adverse pregnancy outcomes, such as preterm birth (PTB), have been associated with elevated risk of maternal cardiovascular disease, but their effect on late midlife blood pressure (BP) and subclinical vascular measures remains understudied. METHODS AND RESULTS: We conducted a cross-sectional analysis with 1220 multiethnic parous women enrolled in SWAN (Study of Women's Health Across the Nation) to evaluate the impact of self-reported history of adverse pregnancy outcomes (PTB, small-for-gestational-age, stillbirth), on maternal BP, mean arterial pressure, and subclinical vascular measures (carotid intima-media thickness, plaque, and pulse wave velocity) in late midlife...
December 29, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29286004/areas-under-peripheral-pulse-waves-a-potential-marker-of-atherosclerotic-changes
#17
Mikko Peltokangas, Jarmo Verho, Ville M Mattila, Pekka Romsi, Antti Vehkaoja, Jukka Lekkala, Niku Oksala
OBJECTIVE: In this study, we propose a method for finding atherosclerotic changes based on the ratios of areas under peripheral arterial pulse wave (PW) contours and analyze its performance. APPROACH: The PW signals were recorded with force sensors and photoplethysmographic sensors from ankle, wrist, cubital fossa, index finger and second toe from 30 atherosclerotic patients and 52 control subjects. In addition, day-to-day repeatability of the method was studied with 10 test subjects examined on 3 different days...
December 29, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/29285859/determinants-of-impaired-renal-and-vascular-function-are-associated-with-higher-levels-of-procoagulant-factors-in-the-general-population
#18
Ilona A Dekkers, Renée de Mutsert, Aiko P J de Vries, Frits R Rosendaal, Suzanne C Cannegieter, J Wouter Jukema, S le Cessie, Ton J Rabelink, Hildo J Lamb, Willem M Lijfering
BACKGROUND: Impaired renal and vascular function have been associated with venous thrombosis, but the mechanism is unclear. OBJECTIVES: We investigated whether estimated glomerular filtration rate (eGFR), urinary albumin-creatinine ratio (UACR), and pulse wave velocity (PWV) are associated with a procoagulant state. METHODS: In this cross-sectional analysis of the NEO Study, eGFR, UACR, fibrinogen, and coagulation factors (F)VIII, FIX, and FXI were determined in all participants (n=6536), and PWV was assessed in a random subset (n=2433)...
December 28, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29285419/developing-a-wireless-high-precision-and-processing-speed-pulse-monitoring-headset-using-photoplethysmography
#19
Yunhui Jiang, Jian Tang, Xiaoliang Wang, Chao Shen
In this paper, thorough improvement of pulse monitoring and analysis equipment with a headset structure is presented. In order to study the most suitable infrared wavelength for the acquisition of the pulse wave at the earlobe, Monte Carlo simulation was adapted. Both high frequency noise and baseline drift, generated in the signal acquisition process, are considered. To further optimize the system design and improve accuracy, for the sensor's dimensional drift, the corresponding compensation was carried on in the software...
2017: IEEE Journal of Translational Engineering in Health and Medicine
https://www.readbyqxmd.com/read/29283006/regional-arterial-stiffness-in-central-and-peripheral-arteries-is-differentially-related-to-endothelial-dysfunction-assessed-by-brachial-flow-mediated-dilation-in-metabolic-syndrome
#20
Smriti Badhwar, Dinu S Chandran, Ashok Kumar Jaryal, Rajiv Narang, Kishore Kumar Deepak
The interrelationship between endothelial function and arterial stiffness may be different for central and peripheral arteries due to their structural and functional differences. The study aims to assess the interrelationship between central and peripheral vascular function and haemodynamics in metabolic syndrome. Thirty-seven patients [63.0 (57.5-66.0) years, 68.4% males] of metabolic syndrome (National Cholesterol Education Program - Adult Treatment Panel-III criteria) were studied. Carotid-femoral, carotid-radial pulse wave velocity and augmentation index (AIx@75) were assessed using applanation tonometry...
December 1, 2017: Diabetes & Vascular Disease Research
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