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Zhu Li - - 2012
Oxygen is in many ways a unique element: It is the only known diatomic molecular magnet, and it exhibits an unusual O(8) cluster in its high-pressure solid phase. Pressure-induced molecular dissociation as one of the fundamental problems in physical sciences has been reported from theoretical or experimental studies of diatomic ...
Sørensen Mette - - 2012
Short-term exposure to air pollution has been associated with changes in blood pressure (BP) and emergency department visits for hypertension, but little is known about the effects of long-term exposure to traffic-related air pollution on BP and hypertension. We studied whether long-term exposure to air pollution is associated with BP ...
Andreadis Emmanuel A - - 2012
OBJECTIVE: To compare the quality and accuracy of morning blood pressure (BP) readings as taken by automated office BP (AOBP) and morning home BP (mHBP) techniques using morning ambulatory BP (mABP) measurements as the gold standard. METHODS: A total of 139 individuals were included, 70 men and 69 women, mean ...
Kato Masayuki - - 2012
Recently, endoscopic clip application devices have undergone redesign and improvements to optimize their clinical use and effectiveness. Initially designed for the treatment of bleeding nonvariceal lesions, these devices are also increasingly used for the closure of perforations, fistulas, and anastomotic leaks. Several clinical studies, both randomized and nonrandomized, have used ...
Smith Barnaby - - 2012
Widespread subcutaneous emphysema is an unusual emergency presentation. We present a case of accidental high pressure insufflation, the pathophysiology and subsequent medical management in the acute setting. Such presentations are rare but dramatic and can have important life-threatening consequences that require immediate treatment.
Jadhav M - - 2012
Standard treatments available today for treating hypertension is diuretics, β-blockers, angiotensin converting enzyme inhibitors (ACEs), angiotensin receptor blockers (ARBs), calcium channel blockers, a-blockers, vasodilators, and centrally acting drugs. It is difficult to achieve the optimized renin angiotensin aldosterone system suppression with currently available antihypertensive agents, because ACE inhibitors, ARBs, and ...
Limonta Livia Beatriz Santos - - 2012
Resistant hypertension (RH) is characterized by blood pressure above 140 × 90 mm Hg, despite the use, in appropriate doses, of three antihypertensive drug classes, including a diuretic, or the need of four classes to control blood pressure. Resistant hypertension patients are under a greater risk of presenting secondary causes of hypertension ...
Medow Joshua E - - 2012
Shunt valves are intended to maintain physiological intracranial pressure (ICP). A variety of mechanisms have been designed to accomplish this goal but have had limited success. Siphoning, in particular, has been a problem not effectively solved by proposed or manufactured valves. Poor control of ICP results in headache, neurological disturbances, ...
Oester Alan E AE - - 2012
The purpose of this study is to assess the utility of inferior orbital septum release compared with lateral canthotomy and inferior cantholysis for the treatment of orbital compartment syndrome. An experimental study design using a cadaver model for orbital compartment syndrome was used to compare the efficacy of inferior orbital ...
Bassareo Pier Paolo - - 2012
Previous Italian paediatric blood pressure (BP) tables overestimated the prevalence of hypertension in adolescents of specific geographic areas, such as Sardinia, an island in the Mediterranean Sea. This is probably due to a not very homogeneous distribution of the subjects studied, most from Middle and Northern Italy, and the long ...
Hearst Mary O - - 2012
The association of physical activity (PA), measured 3 ways, and biomarkers were compared in a sample of adolescents. PA data were collected on 2 cohorts of adolescents (N = 700) in the Twin Cities, Minnesota, 2007-2008. PA was measured using 2 survey questions [Modified Activity Questionnaire (MAQ)], the 3-Day Physical ...
Yang Wen-Chieh - - 2012
Hypertensive crisis in children is a relatively rare condition presenting with elevated blood pressure (BP) and related symptoms, and it is potentially life-threatening. The aim of this study was to survey children with first attacks of hypertensive crisis arriving at the emergency department (ED), and to determine the related parameters ...
Malfatti Carlos Ricardo Maneck - - 2012
The essential hypertension has been associated with membrane cell damage. The aim of the present study is investigate the relationship between erythrocyte Na(+),K(+)-ATPase and lipoperoxidation in prehypertensive patients compared to normotensive status. The present study involved the prehypertensive patients (systolic: 136 ± 7 mmHg; diastolic: 86.8 ± 6.3 mmHg; n ...
Vossmeyer Antje - - 2012
The influence of hydrostatic pressure on microbial sulfate reduction (SR) was studied using sediments obtained at cold seep sites from 5500 to 6200 m water depth of the Japan Trench. Sediment samples were stored under anoxic conditions for 17 months in slurries at 4°C and at in situ pressure (50 ...
Hammerberg E Mark - - 2012
Although there is general agreement as to the pathophysiology and treatment of compartment syndrome and the importance of intramuscular pressure measurements, there are many methods described to obtain these measurements. Variations in experimental measurements using current electronic monitoring, needle, and catheter devices of 18 to 22 mmHg are reported and ...
Youssef Asser M - - 2012
Previous studies have shown that intra-abdominal hypertension (IAH) has detrimental effects on organ function and is associated with significantly increased morbidity and mortality. IAH has also been shown to increase intracranial pressure. The exact mechanism is not known. This study tests the effect of an acute increase in intra-abdominal pressure ...
Lei Zhipeng Z Human-Centric Design Research Lab, Department of Mechanical Engineering, Texas Tech University, Lubbock, Texas 79409, - - 2012
This article presents a computational and experimental study of contact pressure between six N95 filtering facepiece respirators (FFRs) and five newly developed digital headforms (small, medium, large, long/narrow, and short/wide). Contact interaction is simulated using the finite element method and validated by experiments using a pressure mapping system. The headform ...
Kumar Jitendra - - 2011
OBJECTIVE: To study the prevalence of hypertension and its determinants among adolescents in rural areas of Wardha. METHODS: The cross-sectional study was carried out in villages under PHC Talegaon (Talatule) of Wardha district of central India. Out of total population of 37,946 in the PHC, 7435 were adolescents. For the ...
Singh Rachana - - 2012
Accurate mechanics measurements during high-frequency oscillatory ventilation (HFOV) facilitate optimizing ventilator support settings. Yet, these are influenced substantially by endotracheal tube (ETT) contributions, which may dominate when leaks around uncuffed ETT are present. We hypothesized that 1) the effective removal of ETT leaks may be confirmed via direct comparison of ...
Wang Zhao - - 2011
Based on the Euler-Lagrange equation for ion density distribution in an inhomogeneous, charged, and hard-sphere fluid, a novel method is proposed to determine the interaction pressure between charged plates. The resulting expression is a sum of distinct physical contributions to the pressure, which involves different contributions to the single-particle direct ...
Unzueta C - - 2011
BACKGROUND: /st>This study was conducted to determine whether an alveolar recruitment strategy (ARS) applied during two-lung ventilation (TLV) just before starting one-lung ventilation (OLV) improves ventilatory efficiency. METHODS: /st>Subjects were randomly allocated to two groups: (i) control group: ventilation with tidal volume (VT) of 8 or 6 ml kg(-1) for ...
Heck Julia E - - 2012
Betel quid is chewed by 600 million people worldwide and it has been linked to obesity and cardiovascular disease. The purpose of our study was to examine the prevalence and predictors of betel quid chewing in a rural area of Bangladesh, and determine its effects on body mass index (BMI) ...
Muders Thomas - - 2011
OBJECTIVES:: To determine the validity of electrical impedance tomography to detect and quantify the amount of tidal recruitment caused by different positive end-expiratory pressure levels in a porcine acute lung injury model. DESIGN:: Randomized, controlled, prospective experimental study. SETTING:: Academic research laboratory. SUBJECTS:: Twelve anesthetized and mechanically ventilated pigs. INTERVENTIONS:: ...
De Lorenzo Robert A - - 2011
BACKGROUND: Bedside ultrasound has been suggested as a non-invasive modality to estimate central venous pressure (CVP). OBJECTIVE: Evaluate a simple bedside ultrasound technique to measure the diameter of the inferior vena cava (IVC) and correlate to simultaneously measured CVP. Secondary comparisons include anatomic location, probe orientation, and phase of respiration. ...
Grossman Alon - - 2011
BACKGROUND: Pulmonary artery systolic pressure (PASP) is frequently measured noninvasively using transthoracic echocardiography. Normal values of PASP are based on studies performed in heterogeneous populations. The normal values of PASP in young healthy subjects are poorly defined. The aim of this study was to describe the distribution and clinical and ...
DeLoach Stephanie S - - 2012
Living donor nephrectomy can be associated with increases in blood pressure several years following the procedure, but the best method to assess blood pressure during the living donor evaluation process is unclear. Living kidney donors underwent casual clinic and ambulatory blood pressure monitoring (ABPM) and measurement of central aortic pressures ...
Xiang Haiyan - - 2011
OBJECTIVE: To propose a novel noninvasive beat-to-beat arterial blood pressure measurement method based on the Korotkoff sound delay time (KDT) and evaluate its accuracy in preliminary experiments. METHODS: KDT decreases as the cuff pressure P deflates, which can be described by a function KDT=f (P). Actually, KDT is a function ...
Clarkson Becky - - 2011
PURPOSE: We developed a prototype device using an automatically controlled inflatable penile cuff to measure bladder voiding pressure continuously and non-invasively in men. The purpose of this study was to validate the pressure measurements made by this device by comparison to those during simultaneous invasive PFS. METHODS: A device was ...
Casha Aaron R - - 2012
Dehiscence of median sternotomy wounds remains a clinical problem. Wall forces in thin-walled pressure vessels can be calculated by membrane stress theory. An ellipsoid pressure vessel model of sternal forces is presented together with its application for optimal wire placement in the sternum. Sternal forces were calculated by computational simulation ...
Olesen Kasper - - 2011
INTRODUCTION: Non-Western cleaners have reported better psychosocial work environment but worse health compared with their Danish colleagues. The aim of this study was to compare the association between psychosocial work environment and hypertension among non-Western immigrant cleaners and Danish cleaners. METHODS: Two hundred and eighty-five cleaners from nine workplaces in ...
Juhl-Olsen P - - 2011
Purpose: Respiratory changes in the diameter of the inferior vena cava (IVC) have been validated as a measure of volume status and preload responsiveness during spontaneous breathing and mechanical ventilation. However, many intensive care patients are ventilated with triggered positive pressure ventilation (PPV). In this setting, there is no evidence ...
Li Yang - - 2011
A convenient method has been developed, which allows for the direct transformation of aryl iodides into the corresponding carboxylic acid anhydrides via Pd-catalyzed carbonylation under atmospheric CO pressure.
Witt Lars - - 2011
Objectives:  Video-assisted thoracoscopic surgery (VATS) has become a standard procedure in pediatric surgery. To facilitate surgical access, the dependent lung has to collapse using intrathoracic carbon dioxide insufflation and/or single-lung ventilation. These procedures can induce hemodynamic deteriorations in adults. The potential impacts of single-lung ventilation in combination with capnothorax on ...
Ewart Craig K - - 2011
BACKGROUND AND PURPOSE: Tested hypotheses from social action theory that (a) implicit and explicit measures of agonistic (social control) motives and transcendence (self-control) motives differentially predict cardiovascular risk; and (b) implicit motives interact with everyday self-regulation behaviors to magnify risk. METHODS: Implicit/explicit agonistic/transcendence motives were assessed in a multi-ethnic sample ...
Comiter Craig V - - 2011
PURPOSE: Objective methods are essential for evaluating post-prostatectomy incontinence. While symptom score and pad weight may be the most useful methods to evaluate preoperative vs postoperative continence, neither is useful for guiding intraoperative sling tension. The Virtue quadratic sling (Coloplast, Humlebaek, Denmark) is a new device for treating post-prostatectomy incontinence ...
Kim Byung Hoon - - 2011
We have obtained high pressure H(2) isotherms with respect to the interlayer distance of multilayered graphene oxide (GO) modulated by thermal annealing. The maximum storage capacity is 4.8 (0.5) wt% at 77 K (298 K) and at 9.0 MPa pressure. We found the optimum GO interlayer distance for maximum H(2) ...
Johansson Gunn - - 2011
ObjectiveWork settings with high levels of stress are consistently associated with poor health outcomes. This study examines the longitudinal relationships between the number of hours of driving a bus in a city and blood pressure and musculoskeletal problems.MethodsA prospective longitudinal design coupled with multilevel random coefficient modeling was used to ...
Azadani Asghar - - 2011
Abstract Background: We developed a non-survival in vivo model for testing of gastric natural orifice translumenal endoscopic surgery (NOTES) closures based on the gastric yield pressure. The aim of this study was to test our model comparing different endoscopic closure techniques with surgical closure of a NOTES gastric incision. Methods: ...
Loenneke Jeremy P JP Department of Health and Exercise Science, Neuromuscular Research Laboratory, The University of Oklahoma, 1401 Asp Avenue, Room 104, Norman, OK 73019-0615, USA. - - 2012
The purpose of this study was to determine the difference in cuff pressure which occludes arterial blood flow for two different types of cuffs which are commonly used in blood flow restriction (BFR) research. Another purpose of the study was to determine what factors (i.e., leg size, blood pressure, and ...
Fanetti Samuele - - 2011
Syntheses based on physical methods, such as pressure and light, are extremely attractive to prepare novel materials from pure molecular systems in condensed phases. The structural and electronic modifications induced by selective optical excitation can trigger unexpected chemical reactions by exploiting the high density conditions realized at high pressure. The ...
Lima Ricardo Antônio Correia - - 2011
OBJECTIVE: To describe an experimental, unprecedented model that mimics the abdominal compartment syndrome (ACS). METHODS: twenty rats were randomly divided into four groups. To simulate ACS intra-abdominal hypertension (IAH) was induced by inserting cotton surgical dressing (Zobec ®), 15x15cm (intra-abdominal pressure constant and equal to 12 mmHg) associated with hypovolemia ...
Croccolo F - - 2011
A thermodiffusion cell is developed for performing Soret experiments on binary mixtures at high pressure and in the presence of a porous medium. The cell is validated by performing experiments at atmospheric pressure. The experiments are performed by applying different temperature gradients to binary mixtures in order to determine their ...
Yu Jiao - - 2011
In previous research [Raspet et al., J. Acoust. Soc. Am. 123(3), 1260-1269 (2008)], predictions of the low frequency turbulence-turbulence and turbulence-mean shear interaction pressure spectra measured by a large wind screen were developed and compared to the spectra measured using large spherical wind screens in the flow. The predictions and ...
Abdullah Mohamed Hussein - - 2011
Objectives: Many centers have adopted central vein cannulation both for central venous pressure monitoring and fluid administration for right hepatectomy in living-liver donors. However, use of central venous catheters is associated with adverse events that are hazardous to patients and expensive to treat. This study sought to examine the use ...
Park Jae-Hyeong - - 2011
Measurement of left ventricular (LV) filling pressure is useful in decision making and prediction of outcomes in various cardiovascular diseases. Invasive cardiac catheterization has been the gold standard in LV filling pressure measurement, but carries the risk of complications and has a similar predictive value for clinical outcomes compared with ...
Bouta Echoe M EM Center for Musculoskeletal Research, Department of Biomedical Engineering, University of Rochester School of Medicine and Dentistry, Rochester, New York, - - 2011
Rheumatoid arthritis (RA) is a chronic autoimmune disease with episodic flares in affected joints; the etiology of RA is largely unknown. Recent studies in mice demonstrated that alterations in lymphatics from affected joints precede flares. Thus, we aimed to develop novel methods for measuring lymph node pressure and lymph viscosity ...
Joe Han Bum - - 2012
The cuff volume of the Cobra perilaryngeal airway (CobraPLA) is larger than that of other alternative airway devices and makes it difficult to predict the effect of cuff pressure on the perilaryngeal mucosa. We tested the hypothesis that adjustment of the cuff pressure of the CobraPLA could reduce the incidence ...
Hensel-Bielowka Stella - - 2011
By using the dielectric relaxation method we studied molecular dynamics of α-tetralone. Our purpose was to reveal the molecular origin of secondary processes observed for this very simple-structured molecule. To this end we carried out dielectric measurements both at ambient and elevated pressure of neat α-tetralone and in mixture with ...
Banner Michael J - - 2011
PURPOSE: We hypothesized that non-invasively determined work of breathing per minute (WOB(N)/min) (esophageal balloon not required) may be useful for predicting extubation outcome, i.e., appropriate work of breathing values may be associated with extubation success, while inappropriately increased values may be associated with failure. METHODS: Adult candidates for extubation were ...
Ramírez-Vélez R - - 2011
OBJECTIVE: Recently, non-pharmacological resources to relieve pain like hot packs and ultrasound (US) have become common in clinical practice. However, little experimental evidence is available about the possible mechanisms through which these methods bring about pain relief. We aimed to determine the effects of hot packs and US on the ...
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