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Williams Monique - - 2011
INTRODUCTION: This study investigated the performance of electronic cigarettes (e-cigarettes), compared different models within a brand, compared identical copies of the same model within a brand, and examined performance using different protocols. METHODS: Airflow rate required to generate aerosol, pressure drop across e-cigarettes, and aerosol density were examined using three ...
Verstraeten M - - 2011
This contribution discusses the difference in chromatographic performance when switching from the customary employed constant flow rate gradient elution mode to the recently re-introduced constant pressure gradient elution mode. In this mode, the inlet pressure is maintained at a set value even when the mobile phase viscosity becomes lower than ...
Wehlage Stephanie J - - 2012
To investigate the potential role of angiotensin II (Ang II) type 1 receptors (AT(1)Rs) as well as endogenously produced nitric oxide (NO) in regulating cardiovascular homeostasis during ontogeny, experiments were carried out in conscious lambs aged approximately 1 week (N = 9) and 6 weeks (N = 11). The arterial ...
Li Huijing - - 2011
The effects and mechanism of high hydrostatic pressure (HHP) on some functional and nutritional properties of soy protein isolate (SPI) for infant formula were investigated. Results indicated that solubility, water holding capacity, emulsification activity index and foaming capacity were improved at lower pressure and time levels, whereas these properties declined ...
Wada Y - - 2011
Aims  It has been recognized that blood pressure shows a seasonal variation, but it remains unknown whether diabetic nephropathy shows a seasonal variation. In the present study, we investigated the change in urinary albumin/creatinine ratio in relation to the season in Japanese patients with Type 2 diabetes. Methods  A total ...
Huang Chin-Ming - - 2011
Abstract Objectives: The characteristics of the right/left radial pressure pulse (RPP) at the six diagnosis positions in Chinese medicine are not well documented. The purpose of this study is to investigate the spectral energy and augmentation index (AI) of bilateral RPP at the six diagnosis positions and heart rate variability ...
Sarntinoranont Malisa - - 2011
Blast-induced traumatic brain injury (bTBI) has received increasing attention in recent years due to ongoing military operations in Iraq and Afghanistan. Sudden impacts or explosive blasts generate stress and pressure waves that propagate at high velocities and affect sensitive neurological tissues. The immediate soft tissue response to these stress waves ...
Kikuya Masahiro - - 2011
The PS-501 device (Parama-Tech, Fukuoka, Japan), an automated device for office blood pressure measurement based on the Korotkoff method and designed for professional use in clinical settings, was validated. Consecutive outpatients with hypertension and ≥30 years old at an outpatient hypertension clinic were recruited. According to the European Society of ...
Pal Gopal Krushna - - 2011
Although recently the incidence of prehypertension has increased considerably, the pathophysiological mechanisms and the effects of gender in its causation have not yet been fully elucidated. Therefore, in this study body mass index (BMI), waist-hip ratio (WHR), basal heart rate (BHR), blood pressure (BP), rate pressure product (RPP), and spectral ...
Hershenson Jared A - - 2011
Induced supraventricular tachycardia (SVT) during electrophysiology studies (EPS) can be associated with hemodynamic changes. Traditionally, invasive arterial blood pressure has been used for continuous monitoring of these changes. This prospective study evaluated the efficacy of near-infrared spectroscopy (NIRS) monitoring during SVT. The use of NIRS has expanded with evidence of ...
Montalcini Tiziana - - 2011
OBJECTIVE:: The aim of this study was to test whether systemic hypertension influences brachial and carotid artery remodeling in postmenopausal women. A secondary aim was to evaluate the possible role of pulse pressure. METHODS:: We enrolled 100 postmenopausal women affected by hypertension (cases) and 100 women with blood pressure within ...
Jamali Sadiq - - 2011
Case study: A man, 44 years of age, presented with a 4 hour history of dizziness, blurred vision, dry mouth and dilated pupils. He was previously well and on no medications and there was no history of recent drug use, head injury or focal neurological symptoms. On questioning, the patient ...
Slim Frederik J - - 2011
Although foot pressure has been reported to be increased in people affected by leprosy, studies on foot pressure and its determinants are limited. Therefore, the aim was to assess barefoot plantar foot pressure and to identify clinical determinants of increased plantar foot pressure in leprosy affected persons. Plantar pressure in ...
Han Jin-Yi - - 2011
In a previous experiment, (-)-epigallocatechin-3-O-gallate (EGCG) reduced caffeine-induced locomotor activity and stereotyped behaviors and inhibited caffeine-induced neuronal stimulant activity. This research was performed to give additional evidence that EGCG counteracts caffeine-induced stimulant effects in animals. EGCG inhibited caffeine-induced cardiovascular activation measures, such as arterial pressure and heart rate. In addition, ...
Batchinsky Andriy I - - 2011
The role of airway pressure release ventilation in the management of early smoke inhalation injury has not been studied. We compared the effects of airway pressure release ventilation and conventional mechanical ventilation on oxygenation in a porcine model of acute respiratory distress syndrome induced by wood smoke inhalation. Prospective animal ...
Eiken Ola - - 2011
G protection afforded by the abdominal bladder of a pneumatic anti-G suit is usually attributed to counteraction of G-induced caudad displacement of the heart and pooling of blood in the abdominal veins. The study examined whether the abdominal bladder might provide G protection also via other mechanisms. Each subject was ...
Guo Ya - - 2011
Although low central venous pressure (CVP) has been used to minimize blood loss during hepatectomy, the impact of variations of CVP on the rate of blood loss and on the perfusion of end-organs has not been evaluated. This animal study aimed to evaluate the hemodynamics and oxygen transport changes during ...
Eastridge Brian J - - 2011
Historically, emergency physicians and trauma surgeons have referred to a systolic blood pressure (SBP) of 90 mm Hg as hypotension. Recent evidence from the civilian trauma literature suggests that 110 mm Hg may be more appropriate based on associated acidosis and outcome measures. In this analysis, we sought to determine ...
Lee Jang Hoon - - 2011
Limited data are available about the incidence of hypertension over the 5-yr in non-hypertensive subjects. The study subjects were 1,806 subjects enrolled in a rural area of Daegu, Korea for a cohort study from August to November 2003. Of them, 1,287 (71.3%) individuals had another examination 5 yr later. To ...
Foster Paul J PJ National Biomedical Research Centre for Ophthalmology, Moorfields Eye Hospital, and Division of Genetics and Epidemiology, UCL Institute of Ophthalmology, London, United Kingdom. - - 2011
To describe the distribution and determinants of intraocular pressure (IOP) and indices of corneal biomechanics in an adult British population. Goldmann-equivalent IOP (IOPg), corneal mechanical characteristics (corneal hysteresis, CH; corneal resistance factor, CRF), and IOP adjusted for corneal factors (IOPcc) were measured. Ocular biometric characteristics were also measured in 4184 ...
Rubini Alessandro - - 2011
We measured metabolic (oxygen uptake, carbon dioxide production, respiratory ratio), cardio-circulatory (heart rate, systolic and diastolic arterial blood pressure, rate-pressure product, an index of myocardial oxygen consumption calculated by multiplying heart rate by systolic pressure) and electromyographic (integrated electromyographic activities of two antigravitational muscles of the lower limb, soleus and ...
Bergrath Sebastian - - 2011
BACKGROUND: : To compare a novel, pressure-limited, flow adaptive ventilator that enables manual triggering of ventilations (MEDUMAT Easy CPR, Weinmann, Germany) with a bag-valve-mask (BVM) device during simulated cardiac arrest. METHODS: : Overall 74 third-year medical students received brief video instructions (BVM: 57s, ventilator: 126s), standardised theoretical instructions and practical ...
Portnoy Sigal - - 2011
The prosthetic foot plays an important role in propelling, breaking, balancing and supporting body loads while the amputee ambulates on different grounds. It is therefore important to quantify the effect of the prosthetic foot mechanism on biomechanical parameters, in order to prevent pressure ulcers and deep tissue injury. Our aim ...
Ho Chester H - - 2011
BackgroundPressure ulcer development is a common, serious complication after spinal cord injury (SCI). Although many biophysical agents are available for treatment, few randomized controlled trials of their efficacy have been done.ObjectiveThe study objective was to examine the efficacy of low-pressure pulsatile lavage treatment for stage III and IV pressure ulcers ...
Drevhammar Thomas - - 2011
OBJECTIVE:: Continuous positive airway pressure is an established treatment for respiratory distress in neonates. Continuous positive airway pressure has been applied to infan ts using an array of devices. The aim of this experimental study was to investigate the characteristics of seven continuous positive airway pressure systems using simulated breath ...
Laragh John H - - 2011
Body sodium works together with the plasma renin-angiotensin system to ensure adequate blood flow to the tissues. Body sodium content determines the extracellular fluid (ECF) volume ensuring that, with each heart beat, a sufficient volume of fluid is delivered into the arterial space. At the same time the kidneys monitor ...
Thorstensen Anders - - 2011
AIMS: It remains to be proven whether left ventricular (LV) peak systolic velocity indices (peak systolic annulus tissue velocities, ejection velocity, and strain rate) are more closely related to contraction than LV end-systolic echocardiographic indices (ejection fraction, fractional shortening, systolic annulus displacement, global strain, and ejection velocity time integral). The ...
Wells Jonathan C K - - 2011
Birth weight has been inversely associated with later blood pressure. Firstborns tend to have lower birth weight than their later-born peers, but the long-term consequences remain unclear. The study objective was to investigate differences between firstborn and later-born individuals in early growth patterns, body composition, and blood pressure in Brazilian ...
Cooke William H - - 2011
The purpose of this study was to test the hypotheses that digital infrared thermographic imaging (DITI) during simulated uncontrolled hemorrhage will reveal 1) respiratory rate and 2) changes of skin temperature that track reductions of stroke volume. In 45 healthy volunteers (25 men and 20 women), we recorded the ECG, ...
Hofer Jason K - - 2011
The objective of this study was to measure the effect of kneeling on tibiofemoral contact following cruciate-retaining and posterior-substituting total knee arthroplasty. Five cadaveric knees were tested on a custom testing system that allowed physiologic muscle loading. Three forces were used to simulate nonkneeling, double-stance kneeling, and single-stance kneeling at ...
Latt L Daniel - - 2011
Background: Osteochondral allograft transplantation is technically demanding. It is not always possible to place the surface of the graft perfectly flush with the surrounding cartilage. One must often choose between placing at least some portion of the surface of the graft slightly elevated or recessed. The effect of this choice ...
Noren S R - - 2011
Odontocetes have an exceptional range in body mass spanning 10(3) kg across species. Because, size influences oxygen utilization and carbon dioxide production rates in mammals, this lineage likely displays an extraordinary variation in oxygen store management compared to other marine mammal groups. To examine this, we measured changes in the partial ...
Cui Jian - - 2011
We recently showed that a fixed volume (i.e., 40 ml) of saline infused into the venous circulation of an arterially occluded vascular bed increases muscle sympathetic nerve activity (MSNA) and blood pressure. In the present report, we hypothesized that the volume and rate of infusion would influence the magnitude of ...
Dalton Douglas Allen - - 2011
Raman spectroscopy and synchrotron X-ray diffraction are used to examine the high-pressure behavior of tetramethylammonium borohydride (TMAB) to 40 GPa at room temperature. The measurements reveal weak pressure-induced structural transitions around 5 and 20 GPa. Rietveld analysis and Le Bail fits of the powder diffraction data based on known structures ...
Crestani Carlos C - - 2011
In the present study, we investigated the effects induced by fluoxetine treatment (10mg/kg) for either 1 or 21 consecutive days on arterial pressure and heart rate basal levels, baroreflex activity, hemodynamic responses to vasoactive agents and cardiovascular responses to acute restraint stress. Mild hypertension was observed after 21days of treatment, ...
Remy Tom - - 2011
A model able to describe the effect of structural changes in the adsorbent or the adsorbed phase during the dynamic (breakthrough) separation of mixtures on metal-organic frameworks (MOFs) is presented. The methodology is exemplified for a few pertinent case studies: the separation of xylene isomers and ethylbenzene on the flexible ...
Goto Takeshi - - 2011
The effect of cabin pressure change on the respiratory system during flight is well documented in the literature, but how the change in atmospheric pressure affects ventricular assist device (VAD) output flow has not been studied yet. The purpose of our study was to evaluate the change in VAD output ...
Kusaka Yusuke - - 2011
OBJECTIVE: To compare cardiac output (CO) measurements acquired using the Flotrac/Vigileo system (Edwards Lifesciences, Irvine, CA) and CO measured by transesophageal echocardiography using the product of the aortic valve area, the time integral of flow at the same site, and the heart rate during abdominal aortic aneurysm (AAA) surgery. DESIGN: ...
Norbury Kenneth C - - 2011
The effect of negative pressure therapy (NPT; The ABThera™ Open Abdomen Negative Pressure Therapy System, KCI USA, Inc., San Antonio, TX) on the integrity of small intestinal anastomoses was evaluated using in situ burst strength testing in a domestic pig model. In each of 3 swine, 8 anastomoses were created, ...
Selassie Anbesaw - - 2011
Prehypertension is a major risk factor for hypertension. Blacks have more prevalent and severe hypertension than whites, but it is unknown whether progression from prehypertension is accelerated in blacks. We examined this question in a prospective cohort study of 18 865 nonhypertensive persons (5733 black [30.4%] and 13 132 white ...
Lim Jung Soo - - 2011
OBJECTIVES: The efficacy of a modified bag-valve mask (BVM) with a ventilation rate alarm system was compared with conventional BVM to maximize adequate minute ventilation volume delivery in a manikin model. METHODS: After a 30-minute instructional session on how to use the 2 types of BVM, volunteers were randomly assigned ...
Corley A - - 2011
BACKGROUND: /st>High-flow nasal cannulae (HFNCs) create positive oropharyngeal airway pressure, but it is unclear how their use affects lung volume. Electrical impedance tomography allows the assessment of changes in lung volume by measuring changes in lung impedance. Primary objectives were to investigate the effects of HFNC on airway pressure (P(aw)) ...
Vaajoki Anne - - 2011
Contradictory results have been presented on how music listening affects patients' blood pressure, heart rate, and respiratory rate. The aim of the present study was to evaluate the effects of music listening on blood pressure, heart rate, and respiratory rate on operation day, and on the first, second, and third ...
Kim Duck Young - - 2011
Noble metals adopt close-packed structures at ambient pressure and rarely undergo structural transformation at high pressures. Platinum (Pt) is normally considered to be unreactive and is therefore not expected to form hydrides under pressure. We predict that platinum hydride (PtH) has a lower enthalpy than its constituents solid Pt and ...
Qiu Feng - - 2011
In previous studies, we have evaluated the hemodynamic properties of selected oxygenators, pumps (centrifugal and roller), and single lumen cannulae. Because the dual lumen cannulae are widely used in veno-venous extracorporeal life support (ECLS) and are receiving popularity due to their advantages over the single lumen cannulae, we evaluated the ...
Pataky Todd C - - 2012
Everyone's walking style is unique, and it has been shown that both humans and computers are very good at recognizing known gait patterns. It is therefore unsurprising that dynamic foot pressure patterns, which indirectly reflect the accelerations of all body parts, are also unique, and that previous studies have achieved ...
Lehmann Nils - - 2011
OBJECTIVE: Given the multimodal medical and interventional treatment options in coronary artery disease (CAD), the current value of intensified lifestyle modification remains unclear. No randomized studies have so far assessed the impact of lifestyle modification on coronary artery calcium (CAC). We examined the long-term effects of a one-year comprehensive lifestyle ...
Angell Peter - - 2011
PURPOSE:: The purpose of this study was to investigate the effect of Anabolic Steroid (AS) use on cardiac structure and function, and cardiovascular risk factors. METHODS:: We recruited 47 strength trained individuals (male=46, female=1) 28 self-reporting regular AS use and 19 self-reporting never taking AS. Participants underwent assessment of body-composition, ...
Rosenbaum Eva - - 2011
While molecular adaptation to high temperature has been extensively studied, the effect of hydrostatic pressure on protein structure and enzymatic activity is still poorly understood. We have studied the influence of pressure on both the quaternary structure and enzymatic activity of the dodecameric TET3 peptidase from Pyrococcus horikoshii. Small angle ...
Dos Santos Paulo Sérgio P - - 2011
Objective  To evaluate the effects of butorphanol on cardiopulmonary parameters in dogs anesthetized with desflurane and breathing spontaneously. Study design  Prospective, randomized experimental trial. Animals  Twenty dogs weighing 12 ± 3 kg. Methods  Animals were distributed into two groups: a control group (CG) and butorphanol group (BG). Propofol was used for induction and ...
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