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Sanchez Isaac C - - 2014
For 68 fluids that include hydrogen bonding and quantum fluids, the fugacity coefficient that defines the residual chemical potential adopts a near universal value of 2/3 at the critical point. More precisely, the reciprocal of the fugacity coefficient equals 1.52 and includes fluids as diverse as helium (1.50), dodecafluoropentane (1.50), ...
Su Yuanhai Y Chair of Fluid Process Engineering, Faculty of Mechanical Engineering, University of Paderborn, D-33098, Paderborn, Germany. - - 2014
The numbering-up of zigzag-form microchannels for liquid mixing was experimentally investigated in a multichannel micromixer including 8 parallel channels, based on the Villermaux-Dushman reaction system, with an appropriate sulphuric acid concentration. The results showed that the micromixing performance in such micromixers could reach the same quality as in a single ...
Averkiev Boris B - - 2014
Pressure effects on the Raman vibrations of an energetic crystal FOX-7 (1, 1-diamino-2, 2-dinitroethene) were examined using density functional theory (DFT) calculations. High accuracy calculations were performed with a periodic plane-wave DFT method using norm-conserving pseudopotentials. Different exchange-correlation functionals were examined for their applicability in describing the structural and vibrational ...
Andrade Marco A B MA Institute of Physics, University of São Paulo, São Paulo, - - 2014
The spontaneous oscillation of solid spheres in a single-axis acoustic levitator is experimentally investigated by using a high speed camera to record the position of the levitated sphere as a function of time. The oscillations in the axial and radial directions are systematically studied by changing the sphere density and ...
Zhu Feng F Key Laboratory of Orogenic Belts and Crustal Evolution, MOE, Peking University, Beijing 100871, People's Republic of - - 2014
VF3-type FeF3 is generally considered as a perovskite with a completely vacant A site. The high-pressure structural evolution of FeF3 has been studied by both X-ray diffraction and theoretical simulation up to 62.0 GPa. Experimental and theoretical results demonstrate that VF3-type FeF3 is stable up to 50 GPa. The structural evolution presents ...
Crowhurst Jonathan C JC Lawrence Livermore National Laboratory , 7000 East Avenue, Livermore, California 94550, United - - 2014
Efforts to synthesize, characterize, and recover novel polynitrogen energetic materials have driven attempts to subject high nitrogen content precursor materials (in particular, metal and nonmetal azides) to elevated pressures. Here we present a combined theoretical and experimental study of the high-pressure behavior of ammonium azide (NH4N3). Using density functional theory, ...
Sun Jie J Department of Medical Ultrasound, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, - - 2014
The aim of the study is to assess the effects of vasoactive agents on the degree of contrast enhancement in experimental atherosclerotic plaque during contrast-enhanced ultrasonography (CEUS). Abdominal aortic atherosclerosis was induced in 25 New Zealand white rabbits by a combination of cholesterol-rich diet and balloon endothelial denudation. Standard ultrasonography ...
Soloway Alexander G AG Department of Mechanical Engineering, University of Washington, 1013 NE 40th Street, Seattle, Washington 98105-6698 - - 2014
Experimental measurements of the peak pressure and sound exposure level (SEL) from underwater explosions collected 7 km off the coast of Virginia Beach, Virginia are presented. The peak pressures are compared to results from previous studies and a semi-empirical equation that is a function of measurement range and charge weight, and ...
Inder Warrick J WJ Department of Diabetes and Endocrinology and University of Queensland, Princess Alexandra Hospital, Brisbane, - - 2014
Addison's disease may be complicated by hypertension and less commonly by heart failure. We review the pathophysiology of the renin-angiotensin-aldosterone axis in Addison's disease and how this is altered in the setting of hypertension and heart failure. An essential first step in management in both conditions is optimising glucocorticoid replacement ...
Freimann Florian Baptist FB Department of Neurosurgery, Universitätsmedizin Göttingen, Georg-August University Göttingen, Göttingen, - - 2014
Anti-siphon devices (ASDs) of various working principles were developed to overcome overdrainage-related complications associated with ventriculoperitoneal shunting. We aimed to provide comparative data on the pressure and flow characteristics of six different types of ASDs (gravity-assisted, membrane-controlled, and flow-regulated) in order to achieve a better understanding of these devices and ...
Huang Zhiwei Z State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, - - 2014
Obstructive sleep apnea (OSA) can result in hypertension and significantly increase cardiovascular morbidity and mortality. There are few reports on the long-term effects of continuous positive airway pressure (CPAP) on blood pressure in patients with uncontrolled hypertension with coronary heart disease (CHD) and OSA. We conducted a prospective, long-term follow-up ...
Surgit Ozgur O aCardiology Department, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital bCardiology Department, Acibadem University Hospital, Istanbul cCardiology Department, Regional Training and Research Hospital, Erzurum, - - 2014
The aim of this cross-sectional study was to evaluate microvolt T-wave alternans (MTWA) as a marker of myocardial electrical instability in normotensive and hypertensive individuals with either nondipper or dipper-type circadian rhythm of blood pressure. The study group included a total of 181 patients: 118 hypertensive patients and 63 normotensive ...
Nishibe Shinichi S Department of Anesthesiology, Saitama International Medical Center, Saitama Medical University, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan, - - 2014
The hemodynamic effects of dexmedetomidine (DEX) on pulmonary artery pressure (PAP) are not fully understood in patients with a single-ventricle physiology. The objective of this retrospective study was to characterize the effect of perioperative DEX infusion on PAP and the transpulmonary pressure gradient after a bidirectional superior cavopulmonary shunt (BCPS) ...
Fadel Bahaa M BM King Faisal Specialist Hospital and Research Center, Riyadh, Saudi - - 2014
Spectral Doppler interrogation of flow across a patent foramen ovale (PFO) allows recording of the instantaneous pressure gradient between left and right atrium (RA). The assessment of RA pressure using the size and collapsibility of the inferior vena cava would thus allow estimation of left atrial (LA) pressure. In this ...
Ye Yuanchao Y Department of Pharmacology, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA, USA - - 2014
G protein β3 (Gβ3) is an isoform of heterotrimeric G protein β subunits involved in transducing G protein coupled receptor (GPCR) signaling. Polymorphisms in Gβ3 (GNB3) are associated with many human disorders (e.g. hypertension, diabetes and obesity) but the role of GNB3 in these pathogeneses remains unclear. Here, Gβ3-null mice ...
Korhonen P E PE 1] Central Satakunta Health Federation of Municipalities, Harjavalta, Finland [2] Satakunta Hospital District, Pori, Finland [3] Institute of Clinical Medicine, Family Medicine, University of Turku, Turku, - - 2014
The aim of this study was to investigate whether resistant hypertension differs from uncontrolled and controlled hypertension in terms of target organ damage. Hypertensive subjects with antihypertensive medication (n=385) were identified in a population survey conducted in southwestern Finland. None of the study subjects had previously diagnosed cardiovascular or renal ...
Salem Joe-Elie JE 1Reanimation and Cardiology, AP-HP, Georges Pompidou European Hospital, Paris, France. 2INSERM UPMC UMRS 1166, ICAN, Université Pierre et Marie Curie, Paris, France. 3Department of Thoracic and Cardiovascular Surgery, Heart and Diabetes Center NRW, Ruhr-University of Bochum, Bad Oeynhausen, Germany. 4INSERM UMR-S 678, Laboratoire d'imagerie fonctionnelle, Université Pierre et Marie Curie, Paris, France. 5Faculty of Medicine, University Paris Descartes, Paris, - - 2014
We investigated the impact of inodilators on the accuracy of E/e' ratio as a surrogate for pulmonary artery occlusion pressure in patients with decompensated end-stage systolic heart failure. The ratio of early diastolic transmitral flow velocity to tissue Doppler mitral annular early diastolic velocity, E/e', and pulmonary artery occlusion pressure ...
Hyldebrandt Janus A JA 1Department of Anaesthesiology and Intensive Care, Aarhus University Hospital, Aarhus, Denmark. 2Department of Clinical Medicine, Aarhus University, Aarhus, Denmark. 3Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, Aarhus, Denmark. 4The Heart Centre, Division of Cardiology, The Hospital for Sick Children, Toronto, ON, Canada. 5Department of Cardiology, Aarhus University Hospital, Aarhus, - - 2014
To investigate the effect of right ventricular stunning on interventricular relationships in newborn piglets and to determine the effect of three commonly used inotropic treatment strategies. Randomized, placebo-controlled animal study. Aarhus University Hospital, animal laboratory. Twenty-eight newborn (4-d old) farm-bred piglets. Acute right ventricular failure was induced by 10 cycles ...
Fonoberova Maria M AIMdyn, - - 2014
Heart rate variability biofeedback intervention involves slow breathing at a rate of ~6 breaths per min (resonance breathing) to maximize respiratory and baroreflex effects on heart period oscillations. This intervention has wide-ranging clinical benefits and is gaining empirical support as an adjunct therapy for biobehavioral disorders, including asthma and depression. ...
Liang Fuyou F Shanghai Jiao Tong University - - 2014
The physiological limitations of the Fontan circulation have been extensively addressed in the literature. Many studies emphasized the importance of pulmonary vascular resistance in determining cardiac output (CO) but gave little attention to other cardiovascular properties which may play considerable roles as well. The present study was aimed to systemically ...
Wei L K LK 1] Human Genome Centre, School of Medical Sciences, Universiti Sains Malaysia, Kelantan, Malaysia [2] Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, - - 2014
Irregular atrial pressure, defective folate and cholesterol metabolism contribute to the pathogenesis of hypertension. However, little is known about the combined roles of the methylenetetrahydrofolate reductase (MTHFR), apolipoprotein-E (ApoE) and angiotensin-converting enzyme (ACE) genes, which are involved in metabolism and homeostasis. The objective of this study is to investigate the ...
Song Kangxing K Yale Cardiovascular Research Center, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT; The Cardiology Department, Chinese Peoples' Liberation Army General Hospital, Beijing, - - 2014
Cardiotrophin-1 (CT-1) is a member of the interleukin 6 cytokine superfamily. Plasma CT-1 levels have been associated with heart failure and hypertension in small independent studies. Whether plasma CT-1 levels are associated with progression of hypertensive heart disease is poorly understood. The authors carried out a meta-analysis using published studies ...
Meltzer Christian C Institute of Particle Technology (LFG), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) , Cauerstrasse 4, 91058 Erlangen, - - 2014
A combination of in situ vibrational sum-frequency generation (SFG) spectroscopy and molecular-dynamics (MD) simulations has allowed us to study the effects of indentation of self-assembled octadecylphosphonic acid (ODPA) monolayers on α-Al2O3(0001). Stress-induced changes in the vibrational signatures of C-H stretching vibrations in SFG spectra and the results of MD simulations ...
Ikeda Satoshi S Department of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan. Electronic address: - - 2014
Echocardiography is widely used for screening pulmonary hypertension (PH). More recently developed two-dimensional speckle-tracking echocardiography (2D-STE) can assess regional deformation of the myocardium and is useful for detecting left ventricular dysfunction. However, its usefulness to assess right ventricular (RV) dysfunction is not clear. Therefore, the aim of this study was ...
Vaz-de-Melo Renan Oliveira RO Hospital de Base, Faculdade de Medicina de São José do Rio Preto, São Paulo, - - 2014
Assessment of central blood pressure (BP) has grown substantially over recent years because evidence has shown that central BP is more relevant to cardiovascular outcomes than peripheral BP. Thus, different classes of antihypertensive drugs have different effects on central BP despite similar reductions in brachial BP. The aim of this ...
Zakovicova Eva E Diabetology and Endocrinology Outpatient Clinic service Hospital Medissimo, Bratislava, - - 2014
The aim of this study was to evaluate the impact of the optimal diabetes control on the left ventricular parameters and ambulatory blood pressure in women with gestational diabetes mellitus (GDM). The patients with GDM were followed up according to predetermined protocol in order to optimize blood glucose and optimal ...
Taskin Eylem E Department of Physiotherapy and Rehabilitation, School of Health Sciences, Istanbul Bilim University, Yazarlar Sokak No:17, 34394, Esentepe-Şişli/Istanbul, Turkey, - - 2014
Adriamycin (ADR) increases the production of reactive oxygen species (ROS), which diminishes mitochondrial function. Angiotensin-II stimulates mitochondrial ROS generation. The aim of the study was to examine whether angiotensin converting enzyme (ACE) or renin inhibitors protect against ADR-induced mitochondrial function impairment. Rats were divided into five groups as control, ADR, ...
Richards Jacob J Departments of aMedicine bBiochemistry and Molecular Biology, University of Florida, Gainesville, Florida, - - 2014
The circadian clock plays an integral role in the regulation of physiological processes, including the regulation of blood pressure. However, deregulation of the clock can lead to pathophysiological states including hypertension. Recent work has implicated the circadian clock genes in the regulation of processes in the heart, kidney, vasculature, and ...
Zhang Zhenyu Z Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, KU Leuven Department of Cardiovascular Diseases, University of Leuven, Leuven, - - 2014
In previous studies, we identified two urinary proteomic classifiers, termed HF1 and HF2, which discriminated subclinical diastolic left ventricular (LV) dysfunction from normal. HF1 and HF2 combine information from 85 and 671 urinary peptides, mainly up- or down-regulated collagen fragments. We sought to validate these classifiers in a population study. ...
Li Shan-Bing SB Pharmacy College, Jinan University, Guangzhou, - - 2014
Heavy tea consumption is suggested to be unsuitable for hypertensive people. However, the bioactive substances in different varieties of tea leaves are very different. This study is aimed to compare the effects of three Chinese tea, Camellia sinensis, Camellia ptilophylla and Camellia assamica var. kucha on blood pressure (BP) and ...
Smith Benjamin C F BC Department of Cardiology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom; School of Medicine, Imperial College, London, United - - 2014
Quantitative assessment of right ventricular (RV) systolic function largely depends on right ventricular ejection fraction (RVEF). Three-dimensional speckle tracking (3D-ST) has been used extensively to quantify left ventricular function, but its value for RV assessment has not been established. This study sought to prospectively assess whether 3D-ST would be a ...
Toker Rabia Tutuncu - - 2014
The aim of this study was to explore the circadian blood pressure rhythm using ambulatory blood pressure monitoring in normotensive children with a family history of essential hypertension. Group1 consisted of children with hypertensive mothers and/or fathers (n=20), Group2 consisted of children with hypertensive grandparents (n=20), and Group3 consisted of ...
Sheward Victoria E VE Evelina Children's Hospital, London, - - 2014
Prior to Norwood 1 surgery, neonates with hypoplastic left heart syndrome (HLHS) are at risk of decompensation from systemic underperfusion secondary to pulmonary overcirculation. We examined whether preoperative temporal profiles of physiological and laboratory variables differed between neonates who did and did not decompensate preoperatively. Case control study. Paediatric Intensive ...
Ozeki Atsuko A Department of Cardiovascular Medicine, Graduate School of Medicine, the University of Tokyo, Tokyo, - - 2014
The aim of this study was to evaluate the add-on effect of aliskiren to valsartan on endothelial-dependent vasodilation in hypertensive patients with ischemic heart disease (IHD). After 4 weeks of treatment with 80 mg of valsartan, 28 patients were allocated to either continued treatment with valsartan or an add-on treatment with valsartan ...
Weng Li-Qing LQ Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institute of Biomedical Science, Fudan University, Shanghai 200032, - - 2014
Aim:Aliskiren (ALK) is a renin inhibitor that has been used in the treatment of hypertension. The aim of this study was to determine whether ALK could ameliorate pressure overload-induced heart hypertrophy and fibrosis, and to elucidate the mechanisms of action.Methods:Transverse aortic constriction (TAC) was performed in mice to induce heart ...
Yeh Jay J Department of Pediatrics, Division of Pediatric Cardiology, University of California Davis Medical Center, Sacramento, - - 2014
Pulmonary capillary wedge pressure (PCWP) is an important indicator in pediatric heart transplant patients, but commonly used noninvasive surrogates, such as ratio of early diastolic mitral inflow velocity to annular velocity (E/E'), have limitations in this population. This study aimed to evaluate the relation of left atrial (LA) peak systolic ...
Manolas Jan J Mobile Unit for Diastolic Stress Test, Department of Check Up, Diagnostic & Therapeutic Center of Athens, Hygeia Hospital, Erythrou Stavrou 4 and Kifissias Ave. Maroussi, Athens 151 23, Greece. - - 2014
Left ventricular (LV) pressure curve shows early high-magnitude changes in presence of induced ischemia. A dramatic rise in LV and left atrial end-diastolic pressures occurs within seconds to minutes in presence of ischemia induced by dynamic or handgrip exercise as well as pacing of 38 to 183% and during short ...
Bech-Hanssen Odd O Heart Center, King Faisal Specialist Hospital & Research Center, Riyadh, Kingdom of Saudi - - 2014
Diastolic dysfunction is a recognized complication in heart transplant (HTx) recipients that limits exercise capacity and is a risk factor for mortality. We investigated the ability of echocardiography to detect elevated pulmonary capillary wedge pressure (mean PCWP>15 mmHg) in HTx recipients. This retrospective study comprised HTx recipients with echocardiography and right ...
Lane Abbi D AD Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, USA Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, USA - - 2014
Aging is commonly accompanied by increased arterial and ventricular stiffness (determined by arterial elastance (Ea) and ventricular elastance (Elv)), augmented ventricular-vascular coupling ratios (Ea/Elv) and systemic inflammation. Acute inflammation may impact ventricular-vascular coupling and predispose older adults to cardiovascular events. However, physically active older adults have more compliant large arteries ...
Karamanzanis George G Department of Cardiology, Athens General Hospital, Athens, - - 2014
Obstructive sleep apnea (OSA) is a highly prevalent condition related to several cardiovascular complications. We assessed the effects of continuous positive airway pressure (CPAP) treatment on myocardial performance and various somatometric parameters in patients with severe OSA receiving CPAP. This is a prospective longitudinal study of 44 patients aged 55.8 ± 10.6 years ...
Bonderman Diana - - 2014
Background:Deficient nitric oxide- soluble guanylate cyclase (sGC)-cGMP signaling results from endothelial dysfunction and may underlie impaired cardiac relaxation in patients with heart failure with preserved left ventricular ejection fraction (HFpEF) and pulmonary hypertension (PH). The acute hemodynamic effects of riociguat, a novel sGC stimulator, were characterized in patients with PH ...
Hutchinson Kate K Department of Cardiology, Hull York Medical School, Hull and East Yorkshire Medical Research and Teaching Centre, Castle Hill Hospital, Cottingham, Kingston upon Hull, HU16 5JQ, - - 2014
Heart failure is one of the most important medical problems facing societies in developed economies and its prevalence is predicted to rise inexorably in the next few decades as longevity increases. Worsening heart failure leading to hospitalization is associated with a poor prognosis and imposes a substantial burden on health ...
Kannan Arun A Section of Cardiology, Sarver Heart Center, University of Arizona College of Medicine, Tucson, AZ, USA, - - 2014
Hypertension remains a significant risk factor for development of congestive heart failure CHF), with various mechanisms contributing to both systolic and diastolic dysfunction. The pathogenesis of myocardial changes includes structural remodeling, left ventricular hypertrophy, and fibrosis. Activation of the sympathetic nervous system and renin-angiotensin system is a key contributing factor ...
Magill Steven B SB Division of Endocrinology, Metabolism, and Clinical Nutrition, Department of Medicine, Medical College of Wisconsin, Menomonee Falls, - - 2014
The renin-angiotensin-aldosterone system (RAAS) is a major regulator of blood pressure control, fluid, and electrolyte balance in humans. Chronic activation of mineralocorticoid production leads to dysregulation of the cardiovascular system and to hypertension. The key mineralocorticoid is aldosterone. Hyperaldosteronism causes sodium and fluid retention in the kidney. Combined with the ...
Brouwer P P Radiology/Neurosurgery, Neurovascular Network NorthSea, Leiden, - - 2014
Performing neurointerventional procedures can in some cases be considered demanding. Some procedures are straightforward but we all face situations where our heart rate and blood pressure seem to rise considerably. In this presentation a graphic representation will be given of the operators' monitored heart rate during a variety of illustrative ...
Bergau Leonard L Dept. of Cardiology and Pneumology, Heart Center, Georg-August-University of Gottingen, Gottingen, - - 2014
It is suggested that an elevated left atrial pressure (LAP) promotes ectopic beats emanating in the pulmonary veins (PVs) and that LAP might be a marker for structural remodeling. This study aimed to identify if the quantification of LAP correlates with structural changes of the LA and may therefore be ...
Ferdinand Keith C KC From the Tulane University School of Medicine, New Orleans, LA (K.C.F.); Calhoun Cardiology Center, University of Connecticut School of Medicine, Farmington (W.B.W.); University of Alabama at Birmingham (D.A.C.); McMaster University, Hamilton, Ontario, Canada (E.M.L.); Sager Consulting, San Francisco, CA (P.T.S.); B2S Consulting, Carmel, IN (R.B.); and Lilly Diabetes, Eli Lilly and Company, Indianapolis, IN (H.H.J., R.J.T., K.E.R., M.J.G.). - - 2014
Glucagon-like peptide-1 receptor agonists, used to treat type 2 diabetes mellitus, are associated with small reductions in systolic blood pressure (SBP) and increases in heart rate. However, findings based on clinic measurements do not adequately assess a drug's 24-hour pharmacodynamic profile. The effects of dulaglutide, a once-weekly glucagon-like peptide-1 receptor ...
Ojala Tiina T Department of Pediatric Cardiology, Children's Hospital, University of Helsinki and Helsinki University Central Hospital, Helsinki, - - 2014
Left ventricular mass (LVM) and synchrony have prognostic value for many cardiovascular disease states. We report the agreement and repeatability of LVM estimation by three-dimensional (3D) versus M-mode and repeatability of 3D estimation of systolic dyssynchrony. 3DLVM was computed by subtraction of endocardial from epicardial volume X1.05 both at end-diastole ...
Valera Beatriz B a Axe Santé des Populations et Environnement, Centre de Recherche du CHUQ , Quebec , CANADA (B.V., E.D.); Institut Louis Malardé , Papeete , POLYNÉSIE FRANÇAISE (E.S.); École des Hautes Études en Santé Publique, Département épidémiologie et biostatistiques , Paris , FRANCE (E.C.); IRIS , UMR 8156-997, Bobigny , FRANCE (E.C.); Quebec Heart and Lung Institute, Laval Hospital Research Centre (P.P.), Faculty of Pharmacy (P.P.), Department of Social and Preventive Medicine (E.D.), Laval University , Quebec , - - 2014
Objective: To analyze the associations between marine n-3 polyunsaturated fatty acids (PUFAs) and blood pressure (BP), resting heart rate (HR), and heart rate variability (HRV) in a population highly exposed to methylmercury through the diet. Methods: Concentrations of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) in erythrocytes membranes were measured ...
Dhillon Santokh S Division of Pediatric Cardiology, Department of Pediatrics, Stollery Children's Hospital, University of Alberta, Edmonton, Alberta, - - 2014
Clinical hemodynamic parameters (heart rate, systolic arterial pressure [SAP], and arterial and venous oxygen saturation saturations [SaO2 and SvO2 ]) are commonly used to guide management to optimize oxygen transport after the Norwood procedure. The adequacy of this practice has not been demonstrated. We examined the correlations between these clinical ...
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