Search Results
Results 301 - 350 of 1823
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Lima Alexandre - - 2011
We conducted this observational study to investigate tissue oxygen saturation during a vascular occlusion test in relationship with the condition of peripheral circulation and outcome in critically ill patients. Prospective observational study. Multidisciplinary intensive care unit in a university hospital. Seventy-three critically ill adult patients admitted to the intensive care ...
Trussler Andrew P - - 2011
Introduction: In the facelift patient, uncontrolled perioperative hypertension is a difficult, acute condition that can lead to significant complications. Although the treatment of hypertension in the ambulatory medical setting has been standardized, its management in the cosmetic surgery setting has been ambiguous. Objectives: The authors evaluate the results of a ...
Niazmand Seed - - 2011
Teucrium polium L. (TP) have been used in herbal medicine for different purposes such as antispasmodic, antidiabetic and lowering blood lipid. In the present study, the impact of aqueous-ethanol extract of TP on blood pressure, heart rate and intraventricular pressure was investigated in rabbit. Twenty-four NWZ rabbits weighed (2-3 kg) ...
Biswas Sayantan - - 2011
This study was conducted to show the intraocular pressure (IOP) distribution and the factors affecting IOP in subjects with type 2 diabetes mellitus (DM) in India. We measured the anthropometric and biochemical parameters for confirmed type 2 DM patients. A comprehensive ocular examination was performed for 1377 subjects aged > ...
Stok Wim J - - 2011
Reconstruction of central aortic pressure from a peripheral measurement by a generalized transfer function (genTF) works well at rest and mild exercise at lower heart rates, but becomes less accurate during heavy exercise. Particularly, systolic and pulse pressure estimations deteriorate, thereby underestimating central pressure. We tested individualization of the TF ...
Sivarajan V Ben - - 2011
Continuous monitoring of various clinical parameters of hemodynamic and respiratory status in pediatric critical care medicine has become routine. The evidence supporting these practices is examined in this review. A search of MEDLINE, EMBASE, PubMed, and the Cochrane Database was conducted to find controlled trials of heart rate, electrocardiography, noninvasive ...
Nguyen Quynh C QC Department of Epidemiology, UNC Gillings School of Global Public Health, Chapel Hill, NC 27514, USA. - - 2011
In the United States, where coronary heart disease (CHD) is the leading cause of mortality, CHD risk assessment is a priority and accurate blood pressure (BP) measurement is essential. Hypertension estimates in the National Longitudinal Study of Adolescent Health (Add Health), Wave IV (2008)-a nationally representative field study of 15,701 ...
Cox L G E - - 2011
Pressurized fluid has been proposed to play an important role in subchondral bone cyst development. However, the exact mechanism remains speculative. We used an established computational mechanoregulated bone adaptation model to investigate two hypotheses: 1) pressurized fluid causes cyst growth through altered bone tissue loading conditions, 2) pressurized fluid causes ...
Oliver Saran - - 2011
J Clin Hypertens (Greenwich). 2011;13:598-604.©2011 Wiley Periodicals, Inc. Hypertension is prevalent in the United States and remains uncontrolled. The primary objective of the study was to determine the effect of once-daily dosing of a combination therapy for blood pressure (BP) and dyslipidemia using home BP monitoring on reaching clinical BP ...
Federiconi Francesco - - 2011
Alkaline folates self-associate in aqueous solutions to form columnar lyotropic phases. Such phases are made by quadruplexes, which are supramolecular helicoidal structures formed by a stacked array of folate tetramers. High-pressure synchrotron X-ray diffraction is used to analyze alkaline folate quadruplex stability and energetics. Diffraction data show that both inter-helical ...
Williams Ron R National Exposure Research Laboratory, U.S. Environmental Protection Agency (US EPA), Research Triangle Park, NC, USA. - - 2012
This work explored the association between nitrogen dioxide (NO(2)) and PM(2.5) components with changes in cardiovascular function in an adult non-smoking cohort. The cohort consisted of 65 volunteers participating in the US EPA's Detroit Exposure and Aerosol Research Study (DEARS) and a University of Michigan cardiovascular sub-study. Systolic and diastolic ...
Noël Stéphanie - - 2011
This study investigated the effects of a single oral administration of ephedrine (2mg/kg) or phenylpropanolamine (PPA) (1.5mg/kg) on the vesico-urethral and cardiovascular functions in continent female dogs. Urethral pressure profilometry (UPP), arterial blood pressures and heart rate were measured in five control dogs and after single-dose treatment with ephedrine or ...
Manakov Andrey Yu - - 2011
Volume changes corresponding to transitions between different phases of high-pressure argon gas hydrates were studied with a piston-cylinder apparatus at room temperature. Combination of these data with the data taken from literature allowed us to obtain self-consistent set of data concerning the equations of state and compositions of the high-pressure ...
Risch Martin R - - 2011
Mercury (Hg) in autumn litterfall from predominately deciduous forests was measured in 3 years of samples from 23 Mercury Deposition Network sites in 15 states across the eastern USA. Annual litterfall Hg dry deposition was significantly higher (median 12.3 micrograms per square meter (μg/m(2)), range 3.5-23.4 μg/m(2)) than annual Hg wet ...
Vlassiouk Ivan V - - 2011
We show that graphene CVD growth on copper foil using methane as a carbon source is strongly affected by hydrogen, which appears to serve a dual role: an activator of the surface bound carbon that is necessary for monolayer growth and an etching reagent that controls the size and morphology ...
Duprez Daniel A - - 2011
Functional biomarkers like large artery elasticity (LAE) and small artery elasticity (SAE) may predict cardiovascular disease (CVD) events beyond blood pressure. The authors examined the prognostic value of LAE and SAE for clinical CVD events among 6,235 Multi-Ethnic Study of Atherosclerosis participants who were initially aged 45-84 years and without ...
Kim Miyong T MT School of Nursing, Johns Hopkins University, Baltimore, MD 21205-2110, USA. - - 2011
This paper reports the results of a clinical investigation to determine the sustainability of intervention effects to lower blood pressure (BP) that were obtained through a short-term education via home telemonitoring of BP and regular counseling by bilingual nurses during 1 year. A total of 359 middle-aged (40-64 years) Korean ...
Finn Michael A - - 2011
Dural tears are a frequent complication of spinal surgery and contribute to significant morbidity. Occasionally, dural tears cannot be closed primarily and dural patch grafts must be utilized. No data exist on the comparative immediate hydrostatic strength of various patch materials used alone or with a biological adhesive in a ...
Orbaek Alvin W - - 2011
Single walled carbon nanotubes (SWNTs) seeds grown using Fe-Co nanoparticles on spin-on-glass. The relative efficiency of nucleation and amplification (versus etching) was investigated as a function of the CH4:H2 feedstock ratio and growth temperature. At 900 °C maximum amplification occurs with a CH4:H2 ratio of 80:20, but 60:40 for nucleation. ...
Al-Safi Saafan A - - 2011
Aim: The goal of this study was to assess the effect of dark chocolate intake on cardiovascular parameters like blood pressure and heart rate values in a normotensive population. Subjects and methods: This is a randomized cross-sectional study involving a total of 14,310 adults that were selected from various regions ...
Nesvold Anders - - 2011
Purpose: Meditation practices are in use for relaxation and stress reduction. Some studies indicate beneficial cardiovascular health effects of meditation. The effects on the autonomous nervous system seem to vary among techniques. The purpose of the present study was to identify autonomic nerve activity changes during nondirective meditation. Materials and ...
Charles Christopher J - - 2011
There is an increasing body of evidence suggesting a role for the urocortin (Ucn) peptides in blood pressure regulation and in the pathophysiology of cardiovascular disease. Both Ucn1 and Ucn2 have recently been shown to inhibit cardiac sympathetic nerve activity (CSNA) in sheep. However, there are few studies reporting the ...
Kawasaki Hidenori - - 2011
The maximum rate of left ventricular pressure rise (LV dp/dt (max)) is a good indicator of ventricular contractility. However, its measurement requires invasive cardiac catheterization. By applying the relationship between the ratio of aorta (Ao) dp/dt (max) to LV dp/dt (max) and the mean artery pressure (MAP), we tested the ...
Bennett Thomas D - - 2011
We report the reversible pressure-induced amorphization of a zeolitic imidazolate framework (ZIF-4, [Zn(Im)(2)]). This occurs irrespective of pore occupancy and takes place via a novel high pressure phase (ZIF-4-I) when solvent molecules are present in the pores. A significant reduction in bulk modulus upon framework evacuation is also observed for ...
Salje E K H - - 2011
High pressure measurements of the ferroelastic phase transition of SrTiO(3) (Guennou et al 2010 Phys. Rev. B 81 054115) showed a linear pressure dependence of the transition temperature between the cubic and tetragonal phase. Furthermore, the pressure induced transition becomes second order while the temperature dependent transition is near a tricritical point. ...
Volsko Teresa A - - 2011
BACKGROUND: Limited data are available to describe the continuous positive airway pressure (CPAP) effects that can be expected when using high flows with a traditional nasal cannula. This study described the relationship between the pressure generated at the airway opening and flow through a nasal cannula using a simulated infant. ...
Gower Amy L - - 2011
The current study investigates whether established associations between physical aggression and low autonomic nervous system arousal, as indexed by heart rate and blood pressure, also apply to the study of the development of relational aggression. Baseline heart rate and blood pressure were collected in two samples of preschoolers, and teachers ...
van den Bogaard Bas - - 2011
Abstract Background. An increase in total peripheral resistance (TPR) usually increases arterial wave reflection. During passive head-up tilt (HUT), however, arterial wave reflection decreases with increasing TPR. This study addressed whether arterial wave reflection gradually decreases during HUT. Methods. In 10 healthy volunteers (22-39 years, nine males), we recorded finger ...
Hadaegh Farzad - - 2011
Abstract We compared systolic (SBP) and diastolic blood pressure (DBP), mean arterial pressure (MAP) and pulse pressure (PP) as independent predictors of cardiovascular disease (CVD), total and CVD mortality among an Iranian population. The study conducted among 5991 subjects aged ≥ 30 years without baseline CVD and antihypertensive medication. The ...
Cicolini Giancarlo - - 2011
BackgroundAlthough blood pressure (BP) differences from supine to sitting position have long been recognized, limited data are available on other commonly used body positions. We performed a cross-sectional study to compare BP values obtained in supine, sitting, and Fowler's positions in essential hypertensive subjects.MethodsSystolic BP (SBP) and diastolic BP (DBP) ...
Davis Daniel P - - 2011
BACKGROUND: Recent investigations underscore the critical importance of ventilation strategies on resuscitation outcomes. In low perfusion states, such as cardiac arrest and traumatic shock, the rise in intrathoracic pressure that accompanies positive-pressure ventilation can significantly impede venous return and lead to a decrease in cardiac output. The optimal ventilation strategy ...
Terauchi Masakazu - - 2011
OBJECTIVE: To examine the effects of keishibukuryogan (TJ-25)-a medicine of the Kampo tradition (the Japanese adaptation of Chinese herbal medicine)-on middle-aged women with high blood pressure. METHODS: The records of 77 peri- and postmenopausal women with high-normal blood pressure or hypertension were analyzed retrospectively. The women had participated in the ...
Dewaele F - - 2011
BACKGROUND: /st> Significant increases in intracranial pressure (ICP) may occur during neuroendoscopic procedures. To detect and prevent serious and sustained increases, ICP should be monitored. At present, controversy exists on the optimal location of the monitoring sensor. Therefore, we conducted an in vitro study to estimate the pressure gradients between ...
Wu Chih Wei - - 2011
The thermal decomposition of C2H5OH highly diluted in Ar (1 and 3 ppm) has been studied by monitoring H atoms using the atomic resonance absorption spectrometry (ARAS) technique behind reflected shock waves over the temperature range 1450 - 1760 K at fixed pressure; 1, 1.45 and 2 atm. The rate ...
Park Sungha - - 2011
OBJECTIVE: High salt intake is known to be the most pivotal environmental factor in the pathogenesis of hypertension. However, the association of high sodium intake with central hemodynamics in hypertensive individuals has not been well defined. Here, we determined the association of estimated 24-h urine sodium and potassium excretion estimated ...
Gonokami Kenta - - 2011
We previously demonstrated that heart rate (HR) variability obtained by daytime ambulatory monitoring and that of daily home measurement associated differently with cardiovascular mortality risk; cardiovascular mortality was linked with decreased daytime ambulatory HR variability and increased day-by-day home HR variability. The aim of this study was to identify factors ...
Hunt Linda P LP School of Clinical Sciences, University of Bristol and Bristol Royal Hospital for Children , - - 2011
To examine whether higher physical fitness is associated with lower levels of blood pressure independent of adiposity in an established cohort of children. We explored how the method used to adjust fitness for body size would influence the findings. Blood pressure, adiposity (DXA scan) and fitness (predicted work capacity at ...
Graham M Ruth - - 2011
OBJECTIVE: Resolution of the acute respiratory distress syndrome (ARDS) requires clearance of pulmonary edema. Biologically variable ventilation (BVV) strategies that improve gas exchange, lung mechanics, and inflammatory mediators in ARDS may be beneficial in this regard. We used quantitative computed tomography (CT), a single indicator thermodilution system (PiCCO®) to determine ...
Petkune Sanita - - 2011
The objective of this work was to investigate the relative humidity (RH) and solvent vapor pressure effects on the phase transition dynamics between tegafur polymorphic forms that do not form hydrates and solvates. The commercially available α and β modifications of 5-fluoro-1-(tetrahydro-2-furyl)-uracil, known as the antitumor agent tegafur, were used ...
Armstrong Sarah - - 2011
Background: Aortocaval compression may affect maternal hemodynamic indices and fetal well-being in various maternal positions. There has been much debate regarding the optimal position for performing neuraxial blockade for labor analgesia and cesarean delivery. We hypothesized that in pregnant women at term, cardiac index (CI) may be improved in the ...
Cheng Hsu-Ting - - 2011
An 11-year-old, 35-kg boy underwent balloon angioplasty twice, at the ages of 4 years and 10 years, with only limited effect. He was admitted for another cardiac catheterization because of chest pain and breathlessness on exercise. Aortography revealed severe discrete coarctation of the aorta, with the narrowest diameter of 6mm. ...
Cho Eun Joo - - 2011
BACKGROUND: The right and left ventricles share the interventricular septum, which mechanically transmits pressure gradients. The aim of this study was to investigate how acute mild or moderate right ventricular (RV) afterload affects left ventricular (LV) function. METHODS: In 14 open-chest pigs (mean weight, 43 ± 4 kg) with preserved ...
Kaufmann Tim A S - - 2011
Thromboembolic complications are one of the major challenges faced by designers and researchers in development of artificial organs with blood-contacting devices such as heart valve prostheses, especially mechanical valves. Besides increasing the thrombogenic potential, these valves change the hydrodynamic performance of the heart. In this study, the flow through a ...
Gray William G - - 2011
Standard models of flow of two immiscible fluids in a porous medium make use of an expression for the dependence of capillary pressure on the saturation of a fluid phase. Data to support the mathematical expression is most often obtained through a sequence of equilibrium experiments. In addition to such ...
Kim Y K - - 2011
Although brain natriuretic peptide (BNP), a marker of cardiac dysfunction, has been known to predict postoperative mortality, little is known about the postoperative prognostic ability of BNP in liver transplantation (OLT) recipients. We aimed to determine whether intraoperative BNP level can predict 1-year all-cause mortality after OLT. We retrospectively investigated ...
Watters Jennifer M - - 2011
: Advanced hemostatic dressings perform superior to standard gauze (SG) in animal hemorrhage models but require 2 minutes to 5 minutes application time, which is not feasible on the battlefield. : Twenty-four swine received a femoral artery injury, 30 seconds uncontrolled hemorrhage and randomization to packing with SG, Combat Gauze ...
Turingan Hazel - - 2011
The aim of the study. An ideal hemostatic dressing that would control bleeding and protect the wound from further contamination is still being sought for combat casualty care. The new SilverLeaf™ (SL) bandage was made of material containing active hemostatic property and possible antimicrobial property from silver coating. This study ...
Mihu Dan - - 2011
The information provided by Doppler ultrasound examination during labor permits the understanding of the mechanisms regarding the physiology and pathophysiology of feto-placental exchange and the fetal adaptive systems. There are certain technical difficulties related to intrapartum Doppler ultrasound examination. The investigated sites are the uterine arteries, umbilical arteries, fetal circulation. ...
Hering Dagmara - - 2011
Uncontrolled blood pressure remains the single most common cause of death accounting for more than 7 million deaths per year worldwide. Despite the availability of potent lifestyle and pharmacologic approaches, rates of control of blood pressure are unsatisfactory and additional strategies to curb the burden of hypertension are warranted. Several ...
Zhao Gong - - 2011
Effects of ranolazine alone and in the presence of phenylephrine (PE) or isoproterenol (ISO) on hemodynamics, coronary blood flow and heart rate (HR) in the absence and presence of hexamethonium (a ganglionic blocker) were studied in conscious dogs. Ranolazine (0.4, 1.2, 3.6, and 6 mg/kg, intravenous) alone caused transient (<1 ...
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