Search Results
Results 251 - 300 of 2051
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Iorio Brayner - - 2011
BACKGROUND: Preventing sudden changes in intraabdominal pressure (IAP) during surgical pneumoperitoneum may reduce adverse events. This study aimed to describe a valve system that stabilizes intraabdominal pressure, minimizing complications of erratic fluctuations in IAP. METHODS: Five male Sprague-Dowley rats were submitted to pneumoperitoneum, with the insufflator set sequentially at 5, ...
Boivin Jean-Marc - - 2011
OBJECTIVES: To assess the implementation of home blood pressure measurement (HBPM) by French general practitioners (GPs) in current practice in 2009 and to assess the evolution of practices between 2004 and 2009; the perceived benefits and limitations of the method; and the adherence to methodological European [European Society of Hypertension ...
Elsheikh Ahmed - - 2011
PURPOSE:: The purpose of the study was to evaluate the in vitro accuracy of correction factors in decreasing the error in the intraocular pressure (IOP) measurements obtained using the Goldmann Applanation Tonometer (GAT). METHODS:: Nineteen donor corneas, from individuals aged between 57 and 99 years (mean 75.7 years, standard deviation±11.4 ...
Messika-Zeitoun David - - 2011
BACKGROUND: Recent studies have emphasized the importance of quantitative assessment of the degree of aortic regurgitation (AR). However, semiquantitative methods have remained mainly used despite their unclear diagnostic value. The aim of this study was to define the sensitivity and specificity of semiquantitative methods compared with the proximal isovelocity surface ...
Carlsen Sven M - - 2011
Objective. To assess possible associations between androgen, estrogen and insulin levels and blood pressure in pregnant women after term, compared to the effect of other well-known factors. Design. Cross-sectional retrospective study. Setting. University Hospital, Trondheim region. Population. Four hundred and eighty-nine post-term women with uncomplicated pregnancies. Methods. Blood pressure measurements ...
Cattoni Diego I - - 2011
BACKGROUND: Enterocutaneous fistulae, pathological communications between the intestinal lumen and abdominal skin, can arise as serious complication of gastrointestinal surgery. A current non-surgical treatment for this pathology involves topical application of sub-atmospheric pressure, also known as vacuum assisted closure (VAC). While this technique appears to be promising, surgeons report about ...
Riede Tobias - - 2011
Vocalization is rare among non-avian reptiles, with the exception of the crocodilians, the sister taxon of birds. Crocodilians have a complex vocal repertoire. Their vocal and respiratory system is not well understood but appears to consist of a combination of features that are also found in the extremely vocal avian ...
Vimlati Laszlo - - 2011
Background:Spontaneous breathing (SB), when allowed during mechanical ventilation (MV), improves oxygenation in different models of acute lung injury. However, it is not known whether oxygenation is improved during mechanically unsupported SB. Therefore, we compared SB without any support with controlled MV at identical tidal volume (V(T)) and respiratory rate (RR) ...
Akins Jonathan S - - 2011
Previous studies have demonstrated that pressure, force, area, and time measurements can be reliably collected from pedobaragraphic platforms, but no studies have analyzed geometric measurements. The purpose of this study was to establish the test-retest reliability of geometric measurements obtained during gait at a self-selected speed using a two-step approach. ...
Vappou J J Ultrasound and Elasticity Imaging Laboratory, Columbia University, New York, NY, - - 2011
Central blood pressure (CBP) has been established as a relevant indicator of cardiovascular disease. Despite its significance, CBP remains particularly challenging to measure in standard clinical practice. The objective of this study is to introduce pulse wave-based ultrasound manometry (PWUM) as a simple-to-use, non-invasive ultrasound-based method for quantitative measurement of ...
Kearney Rebecca S RS Warwick Orthopaedics, Division of Health Sciences, Warwick Medical School, Clinical Sciences Research Laboratories, University Hospital, Coventry, United Kingdom. - - 2011
Advances in the management of Achilles tendon rupture have led to the development of immediate weightbearing protocols. These vary regarding which ankle-foot orthoses (AFOs) are used and the number of inserted heel wedges used within them. This study was conducted to evaluate plantar pressure measurements and temporal gait parameters within ...
Höstman S - - 2011
Oxygenation without tidal breathing, i.e. apnoeic oxygenation in combination with extracorporeal carbon dioxide removal, might be an option in the treatment of acute respiratory failure. However, ventilation with 100% O(2) , which is potentially toxic, is considered a prerequisite to ensure acceptable oxygenation. We hypothesized that trapping nitrogen (N(2) ) ...
Nakamura Takenobu - - 2011
We propose a novel method for computing the pressure tensor along the radial axis of a molecular system with spherical symmetry. The proposed method uses the slice averaged pressure to improve the numerical stability and precision significantly. Simplified expressions of the local pressure are derived for a conventional molecular force ...
Zhang Xinxin - - 2011
We report a joint experimental and theoretical study on high pressure structures of nanoporous mayenite (12CaO[middle dot]7Al(2)O(3)). A pressure-induced amorphization was identified at ∼13 GPa by in situ high pressure x-ray experiments. The amorphous product can be decompressed to ambient conditions. Ab initio calculations reveal that the anisotropic deformations of ...
Gleason Jonathan Lee - - 2011
The objective of this study was to determine the effect of external anal sphincter repair on fecal incontinence symptoms, quality of life, and anal sphincter squeeze pressures. The fecal incontinence symptoms and impact on quality of life, patient satisfaction, and anorectal manometry were assessed pre- and post-operatively. One hundred four ...
Hirai M - - 2011
OBJECTIVES: To compare the interface pressure and stiffness between various combinations of compression material. METHODS: Using a stiffness-determining device, the interface pressure and stiffness were determined in several combinations of five elastic stockings and two elastic bandages. RESULTS: In the double stockings system, the interface pressure increased significantly and the ...
Rocha Teresa - - 2011
This work proposes the application of neural network multi-models to the prediction of adverse acute hypotensive episodes (AHE) occurring in intensive care units (ICU). A generic methodology consisting of two phases is considered. In the first phase, a correlation analysis between the current blood pressure time signal and a collection ...
Tilling Kate - - 2011
Weight gain during infancy may programme later health outcomes, but examination of this hypothesis requires appropriate lifecourse methods and detailed weight gain measures during childhood. We examined associations between weight gain in infancy and early childhood and blood pressure at the age of 6.5 years in healthy children born at ...
Wu John Z - - 2011
Air-cushioned gloves have the advantages of lighter weight, lower cost, and unique mechanical performance, compared to gloves made of conventional engineering materials. The goal of this study is to analyze the contact interaction between fingers and object when wearing an air-cushioned glove. The contact interactions between the the fingertip and ...
Hosalkar Harish S - - 2011
This study outlines a relationship between joint volume, positioning, and intracapsular pressure in a healthy hip. After measuring the native intracapsular pressure in 12 porcine specimens, each joint was injected with radio-opaque-colored saline as pressures were measured. At 20 mmHg, the hip was placed in its position of ease and ...
Liu Saifei - - 2011
The delivery of gaseous microemboli (GME) by the cardiopulmonary bypass circuit should be minimized whenever possible. Innovations in components, such as the integration of arterial line filter (ALF) and ALFs with reduced priming volumes, have provided clinicians with circuit design options. However, before adopting these components clinically, their GME handling ...
Vesborg P C K - - 2011
The emission spectrum of mercury has a notable line at about 365 nm under both low and medium-high pressure conditions. A simple filter based on a solution of dysprosium ions, Dy(3+), is shown to be very useful for applications of Hg-light sources where this line is unwanted. The presented filter ...
Malik Madhur - - 2011
The internal jugular vein continues to be the preferred site for cannulation to monitor central venous pressure despite the reported evidence of the accuracy of external jugular venous pressure (EJVP) to reliably predict internal jugular venous pressure (IJVP). Internal jugular venous cannulation carries a risk of thrombosis that can be ...
Almodovar Jorge L - - 2011
Reliable, valid, and responsive outcomes for different aspects of Charcot-Marie-Tooth (CMT) neuropathy have become increasingly important in an emerging era of therapy development. Measures of the sensory component of CMT in particular are limited. One novel approach with potential applicability to CMT is non-invasive in vivo reflectance confocal microscopy (RCM) ...
Pippinger Thomas - - 2011
A novel diamond-anvil cell (DAC) design has been constructed and tested for in situ applications at high-pressure (HP) operations and has proved to be suitable even for HP sample environments at non-ambient temperature conditions. The innovative high-precision guiding mechanism, comparable to a dog clutch, consists of perpendicular planar sliding-plane elements ...
Ohura Takehiko - - 2011
A basic fibroblast growth factor (bFGF) case and a control case whose total scores of Pressure Ulcer Healing Process-Ohura (PUHP-Ohura) and risk factors for pressure ulcers, and level of care for pressure ulcers were equivalent were paired. Twenty-three such eligible pairs were enrolled in this study. Both cases in each ...
Xu Feng-Ying - - 2011
PURPOSE: The benefits of reducing blood pressure (BP) have been well established, but uncertainty remains about the comparative effects of different BP-lowering regimens. We aimed to estimate the efficacy and the tolerability of eprosartan compared with other agents as monotherapy. METHODS: PubMed, EMBASE, and Cochrane Library were searched for relevant ...
Soares Viviane - - 2011
The respiratory muscles can present fatigue and even chronic inability to generate force. So, reliable devices are necessary to their evaluation. The aim of this study is to evaluate the MEP (Maximal Expiratory Pressure) values of individuals between 20 and 25 years old and to validate a protocol using a ...
Mihailova Boriana - - 2011
The exceptional properties of lead-based perovskite-type (ABO(3)) relaxor ferroelectrics are due to their structural inhomogeneities. At ambient conditions, the average structure is pseudocubic but rich in ferroic nanoregions too small to be directly studied by conventional diffraction analysis. However, combining in situ temperature and pressure diffraction and Raman scattering allows ...
Scherpbier-de Haan Nynke - - 2011
Although blood pressure measurement is one of the most frequently performed measurements in clinical practice, there are concerns about its reliability. Serial, automated oscillometric blood pressure measurement has the potential to reduce measurement bias and white-coat effect'. To study agreement of 30-minute office blood pressure measurement (OBPM) with standardised OBPM, ...
Chen Li-Jen - - 2011
The contact pressure on the vocal fold surface during high pitch or amplitude voice production is believed to be one major source of phonotrauma. Models for the quantitative estimate of the contact pressure may be valuable for prevention and treatment. Various indirect and minimally invasive approaches have been purported to ...
Saladini Francesca - - 2011
To determine the accuracy of the WatchBP Office ABI monitor for blood pressure measurement developed by the Microlife Company. The device accuracy was tested in 85 subjects with a mean age of 54±19 years. Their systolic and diastolic blood pressure (SBP/DBP) at entry was 141±30/86±19 mmHg, and upper arm circumference ...
Dellamonica J - - 2011
Lung volumes, especially functional residual capacity (FRC), are decreased in acute respiratory distress syndrome (ARDS). Positive end-expiratory pressure (PEEP) contributes to increased end-expiratory lung volume (EELV) and to improved oxygenation, but differentiating recruitment of previously nonaerated lung units from distension of previously open lung units remains difficult. This study evaluated ...
Baglivo Hugo P - - 2011
The diagnosis and management of secondary hypertension has improved in the last decade as a result of the advances in the acknowledgment of some physiopathologic mechanisms and mainly by the development of new diagnostic methods. Furthermore, the treatment of some types of secondary hypertension may be solved by noninvasive techniques. ...
Stettin Eduard - - 2011
OBJECTIVE: We investigated whether ICP can be assessed by measuring infrasonic emissions from the tympanic membrane. METHODS: An increase in ICP was induced in 22 patients with implanted ICP pressure sensors. ICP waveforms that were obtained invasively and continuously were compared with infrasonic emission waveforms. In addition, the noninvasive method ...
Ross Scott E - - 2011
A number of instrumented and non-instrumented measures are used to detect balance deficits associated with functional ankle instability (FAI). Determining outcome measures that detect balance deficits associated with FAI might assist clinicians in identifying impairments that may otherwise go undetected with less responsive balance measures. Thus, our objective was to ...
Wu Alex K - - 2011
What's known on the subject? and What does the study add? The urethal catheter is a ubiquitous device that has not been modified or improved for safety in the last 20 years, although it can be associated with significant patient harm. This study utilizes force and pressure measurements of the ...
Al Khaburi Jawad - - 2011
Medical compression bandages are widely used in the treatment of chronic venous disorder. In order to design effective compression bandages, researchers have attempted to describe the interface pressure applied by these bandages using mathematical models. This paper reports on the work carried out to derive the mathematical model used to ...
Park Sang O - - 2011
OBJECTIVE: To compare the accuracy of manually delivered target tidal volumes (TV) with the conventional paediatric self-inflating bags (CPB) versus the novel paediatric self-inflating bags (NPB) during simulated advanced paediatric resuscitation. METHODS: Before the trial begun, four target TV ranges were established using the Broselow(TM) Tape as a reference: 36-70ml ...
Daisenberger Dominik - - 2011
We studied the low-frequency Raman and X-ray scattering behavior of amorphous silicon (a-Si) at high pressure throughout the range where the density-driven polyamorphic transformation between the low-density amorphous (LDA) semiconductor and a novel metallic high-density amorphous (HDA) polyamorph occurs. The experimental data were analyzed with the aid of molecular dynamics ...
Fu Jinxia - - 2011
Polybrominated diphenyl ethers (PBDEs) are flame retardants used in a variety of consumer products. The solid vapor pressures of BDE 15 and BDE 209 were determined by using the Knudsen effusion method, and the values measured extrapolated to 298.15 K are 3.12 × 10(-3) and 9.02 × 10(-13) Pa, respectively. ...
Bramanti Emilia - - 2011
A dynamic surface tension detector (DSTD) has been equipped with an additional pressure sensor for simultaneous viscosity measurements, as a detector for flow injection analysis. The viscosity measurement is based on a single capillary viscometer (SCV) placed in parallel configuration with the DSTD. The viscometer in the optimized conditions consists ...
Papaioannou T G - - 2011
Currently, there is no recommendation regarding the minimum number of pulse wave velocity (PWV) measurements to optimize individual's cardiovascular risk (CVR) stratification. The aim of this study was to examine differences between three single consecutive and averaged PWV measurements in terms of the extrapolated CVR and the classification of aortic ...
Guess Marsha K - - 2011
Introduction.  There are numerous genital complaints in women cyclists, including pain, numbness, and edema of pelvic floor structures. Debate ensues about the best saddle design for protection of the pelvic floor. Aim.  To investigate the relationships between saddle design, seat pressures, and genital nerve function in female, competitive cyclists. Methods.  ...
Seo Jung Hee - - 2011
A method for reducing the spurious pressure oscillations observed when simulating moving boundary flow problems with sharp-interface immersed boundary methods (IBMs) is proposed. By first identifying the primary cause of these oscillations to be the violation of the geometric conservation law near the immersed boundary, we adopt a cut-cell based ...
Liu Xiaodong - - 2011
A new model entitled the coupled mechanical-hydraulic-gaseous effect and biochemical degradation for municipal solid waste (MSW) is proposed to simulate and predict the MSW settlement in this study. The coupled model can be used to simulate and predict the distributions of gas and water pressure as well as total waste ...
Fuks Kateryna - - 2011
Recent studies have shown an association of short-term exposure to fine particulate matter (PM) with transient increases in blood pressure (BP), but it is unclear whether long-term exposure has an effect on arterial BP and hypertension. We investigated the cross-sectional association of residential long-term PM exposure with arterial BP and ...
Sumi Tomonari - - 2011
Hydration effects on high-pressure unfolding of a hydrophobic polymer chain are investigated through a multiscale simulation based on density-functional theory. The results strongly suggest the following: a thermodynamic origin for high-pressure denaturation, i.e., the decrease in volume due to the unfolding can be explained by the formation of a short-period ...
Hall Andrew B - - 2012
After percutaneous endoscopic gastrostomy (PEG) tube placement, many surgeons will place an abdominal binder to protect the tube. Analysis of the literature shows mixed data as to the safety of abdominal binders with respect to pulmonary function. In this study, pulmonary function tests (PFTs) were used to assess changes in ...
Ramdas Wishal D - - 2011
To determine the association between the ocular perfusion pressure (OPP; essentially the difference between the blood pressure and the intraocular pressure [IOP]) and incident open-angle glaucoma (OAG). A subset of 3882 participants of the population-based Rotterdam Study for whom data from ophthalmic examinations at baseline and follow-up and blood pressure ...
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