Search Results
Results 201 - 250 of 2051
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Maleux Geert - - 2011
To compare the accuracy of wedged hepatic venous pressure (WHVP) measurement with use of an end-hole catheter or an occlusion-balloon catheter versus direct portal pressure (PP) measurement in patients with cirrhosis with sinusoidal portal hypertension and to investigate the factors that affect the results of these indirect measurements. In a ...
Talbot Simon G - - 2011
The small diameter and fragility of infant veins increases the risk of intravenous (IV) fluid extravasation. Modern pump delivery systems, designed with pressure sensors to detect and respond to flow obstructions in the IV line, are in wide use to limit the amount of fluid that reaches the extravascular space. ...
Fu Jinxia - - 2011
Polycyclic aromatic hydrocarbons (PAHs) are compounds resulting from incomplete combustion and many fuel processing operations, and they are commonly found as subsurface environmental contaminants at sites of former manufactured gas plants. Knowledge of their vapor pressures is the key to predict their fate and transport in the environment. The present ...
Peleg Micha - - 2012
Direct experimental identification and quantification of the pressure contribution to a pressure-assisted sterilization process efficacy is difficult. However, dynamic kinetic models of thermal inactivation can be used to assess the lethality of a purely thermal process having the same temperature profile. Thus, a pressure-assisted process' temperature record can be used ...
Thomas Charles R - - 2011
Much of the research performed to study SBSL deals with the influence of external parameters (e.g., the host water temperature, the ambient pressure, the type and amount of dissolved gas in the liquid, to name a few) on the bubble dynamics and light emission. In the current paper, work carried ...
Auletta L - - 2011
The equine small intestine can be affected by a variety of disorders that may require some form of bypass or anastomosis. Many suture patterns have been used in equine anastomoses to minimise post operative complications, which include leakage from the anastomosis site, stenosis and adhesions. Because of the critical condition ...
Flynn Joseph T - - 2012
To compare the reliability of blood pressure (BP) readings obtained with an oscillometric device with those obtained by auscultation and assess for differences in BP status classification based on the 2 techniques. Resting BP was measured by auscultation and with an oscillometric device at the same encounter in 235 subjects ...
Inoue Satoki S Nara Medical University, Nara, Japan. - - 2011
Epidural approach angle is one of the determining factors for needle traveling length to reach the epidural space. Likewise, the margin of safety against accidental dural puncture should be affected by epidural approach angle because the space available for epidural needle tip movement in the epidural space is depending on ...
Tao Guocai - - 2011
OBJECTIVES: Although a validated oscillometry sphygmomanometer satisfies the accuracy criteria of Advancement of Medical Instrumentation (AAMI), its long-term blood pressure (BP) measurement error during operations remains to be determined. We aim to (a) compare the error range throughout surgical operations with the accuracy criteria of AAMI, and (b) investigate the ...
Schmalgemeier Heidi - - 2011
PURPOSE: The objective of the present study was to validate noninvasive, continuous blood pressure (BP) measurement using pulse transit time (PTT) to represent absolute values and detect BP changes under continuous positive airway pressure (CPAP) treatment. METHODS: We applied CPAP to 78 patients of a cardiological sleep lab using 0 ...
Boncher Nicholas - - 2011
AIMS: The vaginal distention (VD) translational model for postpartum stress urinary incontinence (SUI) is potentially biased for use in evaluating animals with increasing phenotypic size (obesity) due to a fixed VD volume. Our study had three principle and two secondary aims. First, to examine both ex vivo and in vivo ...
Senbanjo I O - - 2012
We determined the prevalence of general and central obesity and their relationship with blood pressure levels among adolescents in Abeokuta, Nigeria. We selected 423 adolescents from seven schools in Abeokuta, Nigeria, using a multistage random-sampling technique. Body mass index (BMI), waist circumference (WC) and blood pressures were measured. Twenty-one (5%) ...
Wartel Maxime - - 2011
This paper presents in detail the study we carried out concerning the pyrene measurement by jet cooled laser induced fluorescence (JCLIF) in different sooting low pressure methane flames. The aim of this paper is both to demonstrate the potentialities of this technique for the measurement of such moderately-sized PAH under ...
Burkhart Stephen S - - 2011
PURPOSE: The purpose of this study was to compare tendon-bone footprint contact area over time under physiologic loads for 4 different rotator cuff repair techniques: single row (SR), triangle double row (DR), chain-link double row (CL), and diamondback double row (DBK). METHODS: A supraspinatus tear was created in 28 human ...
Tanaka Gohichi - - 2011
Stiffening of the small artery may be the earliest sign of arteriosclerosis. However, there is no adequate method for directly assessing small arterial stiffness. In this study, the finger arterial elasticity index (FEI) was defined as the parameter n which denotes the curvilinearity of an exponential model of pressure (P)-volume ...
Duma Stefan M - - 2011
Purpose: To evaluate the risk of eye injuries by determining intraocular pressure during high speed projectile impacts. Methods: A pneumatic cannon was used to impact eyes with a variety of projectiles at multiple velocities. Intraocular pressure was measured with a small pressure sensor inserted through the optic nerve. A total ...
Santra Biswajit - - 2011
The first principles methods, density-functional theory and quantum Monte Carlo, have been used to examine the balance between van der Waals (vdW) forces and hydrogen bonding in ambient and high-pressure phases of ice. At higher pressure, the contribution to the lattice energy from vdW increases and that from hydrogen bonding decreases, leading vdW ...
Bischoff-Ferrari Heike Annette - - 2011
AIMS: To test the effect of 25(OH)D(3) (HyD) compared to vitamin D(3) on serum 25-hydroxyvitamin D levels (25(OH)D), lower extremity function, blood pressure and markers of innate immunity. METHODS: 20 healthy postmenopausal women with an average 25(OH)D level of 13.2 ng/ml (SD = ± 3.9) and a mean age of 61.5 years (SD = ± 7.2) were ...
Aazh Hashir H Audiology Department, Royal Surrey County Hospital NHS Foundation Trust, Guildford, UK. - - 2012
The aim of this study was to assess differences between real ear insertion gains (REIG) measured with the modified pressure concurrent equalization (MPCE) and modified pressure stored equalization (MPSE) methods for open fittings in a typical audiology patient population. REIGs were compared for the two methods using a warble tone ...
Gateau J - - 2011
Gas nuclei exist naturally in living bodies. Their activation initiates cavitation activity, and is possible using short ultrasonic excitations of high amplitude. However, little is known about the nuclei population in vivo, and therefore about the rarefaction pressure required to form bubbles in tissue. A novel method dedicated to in ...
Hiraki Toshiki - - 2011
For efficient oxygen supply to pressurized culture, we developed a method using a highly pressurized membrane reactor with an air-saturated medium circulation system. The new method increased the cell growth of aerobic yeast approximately 20 folds larger than that in the case of using a conventional method.
Muntner Paul - - 2011
OBJECTIVES: Secondary analysis of clinical trial data suggests visit-to-visit variability (VVV) of blood pressure is strongly associated with the incidence of cardiovascular disease. Measurement of blood pressure in usual practice settings may be subject to substantial error, calling into question the value of VVV in real-world settings. METHODS: We analyzed ...
Yeung Sophie E - - 2011
ABSTRACT Objectives: Blood pressure is an indicator of vascular health that has been associated with cognition and quality of life in older age. Few studies have examined blood pressure across everyday cognitive tasks, which may have superior predictive functional utility than traditional cognitive measures. We explored blood pressure as a ...
Vella Dominic - - 2011
We study the formation of localized structures formed by the point loading of an internally pressurized elastic shell. While unpressurized shells (such as a ping-pong ball) buckle into polygonal structures, we show that pressurized shells are subject to a wrinkling instability. We study wrinkling in depth, presenting scaling laws for ...
Stajer Tomaz - - 2011
Background: Existing techniques of taking foot impressions for producing foot orthoses are static, while walking is a dynamic process. Objectives: The aim of the study was to evaluate a newly developed dynamic casting method for foot orthoses in comparison with static casts. Study Design: Double-blind, randomized two-period cross-over trial. Methods: ...
Tak-Shing Ching Congo - - 2011
Background: Pressure sores are a significant problem in the healthcare sector. Although they may cause considerable morbidity, they are preventable. Objectives: The objectives of this study are to (1) investigate the electrical properties of a tissue close to and away from the pressure sore site, and (2) establish a new ...
Huang Cunkui - - 2011
A method is proposed for creating a non-equilibrium ensemble with a constant number of molecules, constant temperature and constant pressures with different target values in two reservoirs [referred to as NT(P(1)-P(2)) ensemble] that are connected by a finite length nanopore. This method includes two steps. The first step places a ...
Madjdpour C - - 2011
BACKGROUND: This study aimed at comparing air-sealing characteristics of the new tapered-shaped tracheal tube cuffs with cylindrical tube cuffs. METHODS: Tracheal tubes with tapered-shaped polyurethane (PU) and polyvinyl chloride (PVC) cuffs as well as standard cylindrical-shaped cuffs made of PU and PVC (Covidien, Athlone, Ireland) were investigated. A tracheal model ...
Bassani Mariana Almada - - 2011
BACKGROUND: Although the self inflating bag is widely used in the hospital setting, variability of delivered ventilatory parameters is usually high, which might result in both hypoventilation and lung injury. The aims of this study were to assess possible sources of the high variability and to evaluate adequacy of obtained ...
Chiang Yueh-Feng - - 2011
BACKGROUND: The adverse effects of annulotomy during lumbar discectomy have been increasingly recognized, and methods are developing to repair the annular defect. Biomechanically, the repair should retain the intra-nuclear pressure, which is doubtful using the current suture techniques. Therefore, a new suture technique was designed and tested to close a ...
Chu Jeffrey J - - 2012
It is estimated that 10-20% of United States soldiers returning from Operation Iraqi Freedom (OIF) and Operation Enduring Freedom (OEF) have suffered at least one instance of blast-induced traumatic brain injury (bTBI) with many reporting persistent symptomology and long-term effects. This variation in blast response may be related to the ...
Macia E - - 2012
Older adults are disproportionately affected by hypertension, which is an established risk factor for cardiovascular disease. Despite these facts, no study of the prevalence, awareness, treatment and control on arterial hypertension in Senegal has been conducted, specifically among elderly people. Five hundred people aged 50 years and older, living in ...
Pan S-L - - 2011
OBJECTIVE:Very few studies have explored the temporal relationship between hypertension and trigeminal neuralgia (TN). The aim of this population-based follow-up study was to investigate whether hypertension is associated with a higher risk of developing TN. METHODS:A total of 138,492 persons with at least 2 ambulatory visits with the principal diagnosis ...
Coverdale Nicole S - - 2012
Developmental coordination disorder (DCD) is a neurodevelopmental condition characterized by poor motor skills leading to a significant impairment in activities of daily living. Compared to typically developing children, those with DCD are less fit and physically active, and have increased body fat. This is an important consequence as both sedentary ...
Wlodarczyk P - - 2011
Molecular dynamics of glibenclamide and glimepiride in their glassy state were studied by means of broadband dielectric spectroscopy. In both compounds we found a γ-relaxation process, with nearly the same value of activation energy. Further, we were able to identify the origin of γ relaxation by performing calculations within the ...
Vaschillo Evgeny G - - 2012
The arterial baroreflex system (BRS) consists of at least three closed-loop control systems: the heart rate (HR), vascular tone (VT), and stroke volume (SV) BRSs. Whereas HR-BRS gain is well studied, VT-BRS and SV-BRS gain are not. This study aimed to develop a method for quantifying VT-BRS and SV-BRS gain ...
Knoche Sebastian - - 2011
We investigate buckling of soft elastic capsules under negative pressure or for reduced capsule volume. Based on nonlinear shell theory and the assumption of a hyperelastic capsule membrane, shape equations for axisymmetric and initially spherical capsules are derived and solved numerically. A rich bifurcation behavior is found, which is presented ...
Muhlestein Michael B - - 2011
Previous research involved investigating a characteristic shock formation distance for Gaussian, finite-amplitude noise propagating in a cylindrical plane wave tube [Muhlestein and Gee, POMA 12, (in press)]. In particular, the evolution of the probability density function of the pressure and the first-order time derivative of pressure along with the skewness ...
Deignan Brian J - - 2011
: Burns and pressure sores are common injuries during cast application. Various factors such as water temperature, padding, and cast material layers may play a role in these injuries; however, the effect of cast molding on temperatures and pressures has not been investigated. This raises the following questions, does the ...
Bhatta Ambika - - 2011
A new representation of the scattered pressure of a point source due to infinite rigid wedge is derived by simplifying the Bessel functions in the modal solution and by implementing the image based representation of the source. The solution comprises of six impulses contributing to the reflected and transmitted pressure ...
Pravica Michael - - 2011
We have developed and demonstrated a novel method to load oxygen in a sealed diamond anvil cell via the x-ray induced decomposition of potassium chlorate. By irradiating a pressurized sample of an oxidizer (KClO(3)) with either monochromatic or white beam x-rays from the Advanced Photon Source at ambient temperature and ...
Benchimol Michael J - - 2011
Certain nanoparticles act as nucleation sites for acoustic cavitation. Their surface roughness and hydrophobic regions can decrease the pressure required to induce the cavitation event. This concept has been examined for potential to provide a sensitizer for high-intensity focused ultrasound (HIFU), where cavitation can be beneficial. While passive cavitation detection ...
Cain Jericho - - 2011
Wind turbines can be damaged by the inflow of high amplitude wind turbulence. The goal of this project is to determine if potentially damaging turbulent structures at hub height can be detected by infrasonic wind noise measurements at the ground. A large eddy simulation is used to model the atmospheric ...
Schwartz Richard Bruce - - 2011
Abstract Background. Uncontrolled hemorrhage remains the primary cause of preventable battlefield mortality and a significant cause of domestic civilian mortality. Rapid hemorrhage control is crucial for survival. ChitoGauze and Combat Gauze are commercially available products marketed for rapid hemorrhage control. These products were selected because they are packable gauze that ...
Li Baosheng - - 2011
Elastic properties of materials under extreme conditions of pressure and temperature are of great interests to researchers in many disciplines. In the last decade, acoustic velocity measurements using an improved ultrasonic interferometry method have been developed in both MA-6 and MA-8 types of multi-anvil high pressure apparatus. By placing the ...
Hoder Tomáš - - 2011
The investigation of striated microdischarges in barrier discharges in argon at atmospheric pressure is reported. Microdischarges were investigated by means of electrical measurements correlated with intensified CCD camera imaging. The scaling law theory known from low-pressure glow discharge diagnostics was applied in order to describe and explain this phenomenon. The ...
Yun Jung-Yeon - - 2011
Unlike its use during stable conditions, central venous pressure (CVP) monitoring from a peripherally inserted central venous catheter (PICC) has not often been used in surgeries with significant hemodynamic alterations. The aim of this study was to evaluate the feasibility of measuring PICC pressure (PICCP) as an alternative to measuring ...
Sewell Philip - - 2011
OBJECTIVE: It has been recognised in a review of the developments of lower-limb prosthetic socket fitting processes that the future demands new tools to aid in socket fitting. This paper presents the results of research to design and clinically test an artificial intelligence approach, specifically inverse problem analysis, for the ...
Kolkman I - - 2011
Some anatomical characteristics of 507 Belgian Blue (BB) cattle, withers height (WH), heart girth (HG), the distance between the two tubera coxae (TcTc) and the distance between the two tubera ischiadica (TiTi), were compared with the internal pelvic measurements of width, height and area. Mean values were 58.9 ± 6.2 cm for TcTc, ...
Desai Neeraj R - - 2011
PURPOSE: Rapid shallow breathing index (RSBI) is conveniently measured through the ventilator. If continuous positive airway pressure (CPAP) is used, it may change the RSBI value. We measured the RSBI with a handheld spirometer and through the ventilator, with and without CPAP, to assess differences. MATERIALS AND METHODS: Rapid shallow ...
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