Search Results
Results 351 - 400 of 1826
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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 ...
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 ...
Rich Shayna E - - 2011
To evaluate the association between pressure-redistributing support surface (PRSS) use and incident pressure ulcers in older adults with hip fracture. Secondary analysis of data from prospective cohort with assessments performed as soon as possible after hospital admission and on alternating days for 21 days. Nine hospitals in the Baltimore Hip ...
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 ...
Lagory Jason - - 2011
Undergraduates scoring low and high on a questionnaire measure of relatively extended fatigue were presented four versions of an auditory mental arithmetic challenge, ranging in difficulty from low to impossibly high. Among Low Fatigue participants, blood pressure and heart rate responses assessed during the work periods first rose and then ...
Pizzi Oswaldo Luiz - - 2011
BACKGROUND: Pulse wave velocity (PWV) can be a marker of cardiovascular impairment, but there are few studies in young adults. OBJECTIVE: To evaluate the association between blood pressure (BP), current anthropometric and metabolic variables and those obtained 13 years earlier, in childhood and adolescence, with PWV. METHODS: Sixty individuals were ...
Donlan Matthew - - 2011
INTRODUCTION: Continuous positive airway pressure (CPAP), used either alone or associated with heliox (CPAP-He), has become a popular therapeutic option for bronchiolitis. This systematic review assesses the impact of CPAP on endotracheal intubation, carbon dioxide pressure (PCO(2) ) and respiratory distress in patients with bronchiolitis. METHODS: Systematic search including studies ...
Toma Kumika - - 2011
To identify the effect of acupuncture on skin sympathetic nerve activity (SSNA), 17 healthy subjects (7 male and 10 female) underwent LI4 acupuncture and sham needle insertion during resting or elevated SSNA conditions. In Protocol 1 (resting SSNA), subjects received a 10min sham followed by 10min of LI4 acupuncture during ...
Conley Kristen M - - 2012
Routine academic events may cause stress and produce temporary elevations in blood pressure. Students who experience test anxiety may be especially prone to cardiovascular activation in response to academic stress. This study drew on self-reported stress and ambulatory blood pressure measurements provided by 99 undergraduate participants (30% men, mean age = 21 years) ...
Sehrt Daniel - - 2011
Carvedilol is an effective treatment in hypertension and chronic heart failure. The medical impact of polymorphisms in CYP2D6 and in the β-adrenergic receptors ADRB1 and ADRB2 on the pharmacokinetics and pharmacodynamics of carvedilol is controversial. After carvedilol 25 mg was administered to 110 volunteers, concentrations were enantioselectively quantified and effects ...
Tejera Eduardo E Department of Biochemistry, Faculty of Pharmacy, University of Porto, Porto, Portugal. - - 2012
In this work, we perform a comparative analysis of blood pressure and heart rate variability complexity during pregnancy between normal, hypertensive, and preeclamptic women. A total of 563 short electrocardiographic (10 min) records were obtained from 217 pregnant women (135 normal, 55 hypertensive, and 27 preeclamptic) during several gestational ages ...
Ueno Yoshitoyo - - 2011
BACKGROUND: During noninvasive positive pressure ventilation (NPPV), leakage around the mask may cause inadequate ventilatory support or patient-ventilator asynchrony such as auto-triggering. Some NPPV ventilators may be better at compensating for leakage than others. We did a bench study to investigate how ventilators coped with varying amounts of leakage during ...
Amdursky Nadav - - 2011
Time-resolved emission techniques were employed to study the nonradiative process of thioflavin-T (ThT) in 1-propanol, 1-butanol, and 1-pentanol as a function of the hydrostatic pressure. Elevated hydrostatic pressure increases the alcohol viscosity, which in turn strongly influences the nonradiative rate of ThT. A diamond-anvil cell was used to increase the ...
Calandra Matteo M IMPMC, Université Paris 6, CNRS, 4 Place Jussieu, 75015 Paris, - - 2011
At low temperature TiSe2 undergoes a charge-density wave instability. Superconductivity is stabilized either by pressure or by Cu intercalation. We show that the pressure phase diagram of TiSe2 is well described by first-principles calculations. At pressures smaller than 4 GPa charge-density wave ordering occurs, in agreement with experiments. At larger ...
Pillow J Jane - - 2011
PURPOSE: In adult animals, ventilation with variable tidal volume and rate improves lung mechanics, arterial oxygenation and ventilation compared to a monotonously controlled ventilation pattern. We assessed the physiological consequences of variable ventilation in the immature lung. METHODS: Lambs delivered at 129 days (term = 150 days) were euthanised (n = 9) or anaesthetised, tracheostomised and ...
Jiang Yandong - - 2011
BACKGROUND:: The authors hypothesized that mouth ventilation by a resuscitator via the nasal route ensures a more patent airway and more effective ventilation than does ventilation via the oral route and therefore would be the optimal manner to ventilate adult patients in emergencies, such as during cardiopulmonary resuscitation. They tested ...
Wang Z - - 2012
Hypertension in children is frequently undiagnosed. Normal blood pressure is currently defined as a function of two continuous variables, age and height for each gender. Applying the current cutoff values to assess a child's blood pressure is time consuming. To separate the independent effect of age from that of height ...
Alobid Isam - - 2011
To compare psychophysiological responses among novice surgeons during performance of endoscopic sinus surgery (ESS). Randomized study. Academic institution. Fifteen novice surgeons. The psychophysiological effects of performing ESS were assessed among 15 novice surgeons at 30 minutes before (T - 30), at the beginning of (T0), at 15 minutes (T15), and 45 minutes ...
Frölich Michael A MA Department of Anesthesiology, University of Alabama, Birmingham, AL 35249-6810, USA. - - 2011
To study the effect of intravenous (IV) sedation on blood pressure (BP), heart rate (HR), and respiratory rates (RR) to determine if IV sedatives differ with respect to their effect on BP, HR, and RR. Prospective, randomized, single-blinded, placebo-controlled study. Monitored patient care room at a clinical research center. 60 ...
White-Chu E Foy - - 2011
Pressure ulcers are common, costly, and debilitating chronic wounds, which occur preferentially in people with advanced age, physical or cognitive impairments, and multiple comorbidities. Residents with pressure ulcers have decreased quality of life and increased morbidity and mortality, and facilities with high rates of pressure ulcers have higher costs and ...
Hamilton Douglas R - - 2011
The purpose of this study was to show the similarity between the pericardial constraint over the right and left ventricles of humans at various levels of central venous pressure (CVP) using flat Silastic balloons in the pericardial space during elective cardiac surgery. Six subjects (aged 19-76 years) were instrumented with ...
Wang Jiun-Jr - - 2011
Our objective was to demonstrate wave propagation and reflection in the canine aorta. Recently we proposed that aortic pressure is the instantaneous sum of wave-related or "excess" pressure and reservoir or windkessel pressure. Accordingly, in this research we calculated reservoir pressure and subtracted it from measured pressure to identify the ...
Mo Yuan Heng - - 2011
The purpose of this study is to determine the effects of propranolol on the left ventricular (LV) volume during CT coronary angiography. The LV volume of 252 normal Chinese subjects (126 subjects with propranolol medication and 126 age- and gender-matched Chinese subjects without medication) was estimated using 64 slices multi-detector ...
Levy Ofer - - 2011
: Maintaining good hemostasis is vital to ensure clear vision during arthroscopic surgery. This is most commonly achieved with electrocautery or radiofrequency devices. Another technique involves temporarily increasing the arthroscopic fluid inflow pressure to tamponade the bleeding. Unfortunately, both of these methods are not without risks or limitations and may ...
Johnstone Russell D L - - 2011
Bianthrone [10(10-oxoanthracen-9-ylidene)anthracen-9-one] consists of two tricyclic anthraceneone units connected by a carbon-carbon double bond. Crystals of the form obtained under ambient conditions are yellow and contain folded centrosymmetric conformers in which the central ring of the anthraceneone unit is non-planar. When hydrostatic pressure is applied the crystals assume a red ...
Véchot Luc - - 2011
The runaway and blowdown of a non tempered hybrid chemical system (30% cumene hydroperoxide) exposed to an external heat input was investigated using a 0.1l scale tool. The maximum temperature and the maximum temperature rise rate were showed to be sensitive to the vent size. An Antoine type correlation between ...
Krzy┼╝aniak Alicja - - 2011
Aim of the study: The aim of the study was to assess the prevalence of elevated blood pressure values and significant family history with respect to the incidence of cardiovascular diseases in overweight and obese adolescents. Material and methods: Our study encompassed 4904 adolescents from randomly selected schools from the ...
Uchida Shuhei - - 2011
We have demonstrated the fabrication of two-dimensionally periodic non-close packed arrays of spherical polystyrene nanoparticles with controllable their structural parameters including diameter and interpartcile distance. The principle of this procedure relies on stepwise integration of spin-coat-assisted colloidal self-assembly of the single layer of close-packed polystyrene nanoparticle on a substrate, and ...
Ankad Roopa B - - 2011
Asana, pranayama, and meditation are three main techniques of yoga practiced in India over thousands of years to attain functional harmony between the body and mind. Recent studies on long-term yogic practices have shown improvements in cardiovascular functions. The present study was conducted to ascertain if a short-term practice of ...
Cheah Whye Lian - - 2011
It is important to understand the prevalence of risk factors for cardiovascular disease, especially in a rural setting. A cross-sectional study was carried out in 238 rural households located in the Kuching and Samarahan divisions of Sarawak among individuals aged 16 years and above. Anthropometric measurements, blood levels of glucose ...
Clark Maggie L - - 2011
Biomass-derived indoor air pollution has been associated with increased risks of respiratory diseases; however, relatively few studies have examined the cardiovascular effects of biomass burning. We measured 48-hour indoor fine particulate matter and indoor and personal carbon monoxide (CO) concentrations in 124 households using open-fire cook stoves in Nicaragua. We ...
Li Qing - - 2011
A streamer coupling theory is developed to describe the formation of homogenous emission and the high propagation speed of emission patterns in near-atmospheric pressure discharges. By considering the effects of both electron diffusion and electronic drift in the streamer head, the minimum required preionization level n_{min} for the formation of ...
Lee J - - 2011
In the intensive care unit (ICU), prompt therapeutic intervention to hypotensive episodes (HEs) is a critical task. Advance alerts that can prospectively identify patients at risk of developing an HE in the next few hours would be of considerable clinical value. In this study, we developed an automated, artificial neural ...
Sierra-Ramírez Rocío - - 2011
Kinetic models applied to oxygen bleaching of paper pulp focus on the degradation of polymers, either lignin or carbohydrates. Traditionally, they separately model different moieties that degrade at three different rates: rapid, medium, and slow. These models were successfully applied to lignin and carbohydrate degradation of poplar wood submitted to ...
Zaproudina Nina - - 2011
Skin vasomotor responses to cold exposure (CE) have been measured widely and shown to be abnormal in some clinical conditions. Among other methods, monitoring of skin temperature (Tsk) changes has been applied for those purposes. We investigated such changes simultaneously in different skin areas of healthy young men during foot ...
Ho David - - 2011
The majority of current cardiovascular research involves studies in genetically engineered mouse models. The measurement of heart rate is central to understanding cardiovascular control under normal conditions, with altered autonomic tone, superimposed stress or disease states, both in wild type mice as well as those with altered genes. Electrocardiography (ECG) ...
Clariana M - - 2011
The effect of high pressure (at 600 and 900MPa) on the levels of purines and pyrimidines was evaluated in dry-cured and cooked ham. Pressurization of dry-cured ham did not modify purines and pyrimidines contents. On the contrary, treatment at 600 MPa and 900MPa caused a decrease in guanosine and an ...
Grosso A M - - 2011
The UK National Health Service (NHS) currently spends in excess of £250 million per annum on angiotensin II receptor blockers (ARBs) for the treatment of hypertension and heart failure; with candesartan currently dominating the market. With the recent introduction of generic losartan, we set out to directly compare the branded ...
Roberts Langdon - - 2011
To increase the understanding of the physiological mechanisms by which massage therapy produces health benefits such as pain relief and anxiety reduction, the relationship between specific elements of massage and physiological outcomes must be addressed. The effects on resting muscular activity of applying varying levels of pressure during massage were ...
Inoue Kenji - - 2011
To prospectively evaluate the diurnal variation of intraocular pressure (IOP) during unoprostone treatment in 13 healthy volunteers. IOP was measured by Goldmann applanation tonometry by the same observer every 3 hours from 9 am to 9 am the next morning. Unoprostone was then instilled at 9 am and 9 pm ...
Hildrum Bjørn - - 2011
For decades, symptoms of anxiety and depression have been included among psychological factors associated with development of hypertension. Although this has been questioned in recent studies, most findings have been based on a single assessment of mental distress at baseline. We examined these associations using repeated assessments of anxiety, depression ...
Valera Beatriz - - 2011
Populations which diet is rich in seafood are highly exposed to contaminants such as mercury, which could affect cardiovascular risk factors To assess the associations between mercury and blood pressure (BP), resting heart rate (HR) and HR variability (HRV) among French Polynesians Data were collected among 180 adults (≥ 18 ...
Carev Mladen - - 2011
Anesthesiologists often work extended duty shifts that result in acute and chronic sleep loss and circadian disruption. Stress caused by sleep deprivation, together with excessive workload could contribute to acute increases in blood pressure (BP) and sympathetic nervous system activity. Non-dipping pattern of BP is considered an additional risk factor ...
Abiodun Adedeji G - - 2011
Purpose. This study investigated the anthropometric indices associated with variations in cardiovascular parameters among primary school pupils in Ile-Ife. Method. One thousand and twenty-six pupils (age range 6-14 years, mean age 10.12 years) from ten schools were recruited with parents' informed consent. Anthropometric (Height (Ht), Weight (Wt), Abdominal Circumference (AC)) ...
Pal G K - - 2011
Objective. Though prehypertension has strong familial predisposition, difference in pathophysiological mechanisms in its genesis in offspring of both parents and single parent hypertensive have not been elucidated. Methods. Body mass index (BMI), waist-hip ratio (WHR), basal heart rate (BHR), blood pressure (BP), HR and BP response to standing, deep breathing ...
Szewieczek J - - 2011
Objectives: Knowledge of rational, evidence based health care in the hundred-year-old is still poor. The aim of the study was to evaluate health and functional state in hundred-year-old inhabitants of Upper Silesia, Poland, with a focus on the heart and vascular function. Participants: Medical and nursing assessment at places of ...
Sarkkinen Essi S - - 2011
High salt intake is linked to hypertension whereas a restriction of dietary salt lowers blood pressure (BP). Substituting potassium and/or magnesium salts for sodium chloride (NaCl) may enhance the feasibility of salt restriction and lower blood pressure beyond the sodium reduction alone. The aim of this study was to determine ...
Hinojosa-Laborde Carmen - - 2011
Heart rate variability (HRV) decreases during hemorrhage, and has been proposed as a new vital sign to assess cardiovascular stability in trauma patients. The purpose of this study was to determine if any of the HRV metrics could accurately distinguish between individuals with different tolerance to simulated hemorrhage. Specifically, we ...
Olufsen Mette S MS Department of Mathematics, North Carolina State University, Raleigh, NC, USA. - - 2011
The impact of gravity during head-up tilt, a test often used in the clinic to diagnose patients who suffer from dizziness or frequent episodes of syncope, is not well described. This study uses mathematical modeling to analyze experimental blood pressure data measured at the level of the aorta and the ...
Ferrario Manuela M Dipartimento di Bioingegneria, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy. - - 2011
In this paper, we propose the use of black box models for the system identification of the cardiopulmonary baroreflex control of arterial resistance and of ventricular contractility and of arterial baroreflex control of heart rate (HR) from invasive, continuous measurements of arterial blood pressure (ABP) and central venous pressure (CVP), ...
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