Search Results
Results 201 - 250 of 2071
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Alomari A I - - 2011
The use of a simplified system for perivenous infusion of tumescent fluid prior to endovenous laser ablation is described. Two infusion bag systems using different combinations of needle sizes (22, 23 and 25 gauge) and pressure settings (300 and 600 mmHg) as well as hand injections were tested in vivo. ...
Yao Yansun - - 2011
Molecular and crystalline structures of (BH3)n have been theoretically studied in the pressure regime from 1 atm to 100 GPa. At lower pressures, crystals of the familiar molecular dimer are the structure of choice. At 1 atm, in addition to the well-characterized β diborane structure, we suggest a new polymorph ...
Chen Yan - - 2012
There is keen interest in continuous and noninvasive blood pressure (BP) measurement. However, many technologies have a shortcoming of complex mechanical structure. In our study, two arterial pulses are acquired by photoplethysmography (PPG) at ear and toe in order to explore a new method of measuring BP by pulse wave ...
Sendra-Lillo José - - 2011
BackgroundThe usefulness of the community pharmacy blood pressure (BP) (CPBP) method in assessing the effectiveness of antihypertensive treatment has not been adequately studied. The aim of this study was to assess the agreement between community pharmacy, home, and physician office BP (POBP) measurement methods in treated hypertensive patients.MethodsBP was measured ...
Naegel Andreas - - 2011
BACKGROUND: Clip application has been proven to be effective for endoscopic hemostasis. There are limited bench data on the efficacy of the over-the-scope clip (OTSC) for the treatment of spurting GI hemorrhage. We evaluated the hemodynamic efficacy of the OTSC in an established bleeding model. OBJECTIVE: To evaluate the hemodynamic ...
Bø Kari - - 2011
INTRODUCTION AND HYPOTHESIS: It has been suggested that repositioning pelvic organ prolapse (POP) by pessary support may improve pelvic floor muscle (PFM) function. The aim of the present study was to compare vaginal resting pressure and maximal voluntary contraction (MVC) of the PFM measured with and without a ring pessary ...
Bao F - - 2011
Objective: This study aims to obtain the biomechanical properties of porcine cornea so as to provide necessary biomechanical experimental basis for pig-to-human corneal xenotransplantation. Methods: Seventeen fresh porcine corneal specimens obtained from pigs aged 4?6 months were examined under inflation conditions to determine the constitutive relationships of the material through ...
O'Rourke Michael F - - 2011
Our purpose is to review noninvasive methods for measuring central arterial pressure. Indices of central arterial pressure measured from central aortic and peripheral arterial waveforms have shown value in predicting cardiovascular events and death, as well as in guiding therapeutic management. This article reviews noninvasive techniques of measuring central arterial ...
Rice Mark J - - 2011
OBJECTIVE: Hyperinflation of the laryngeal mask airway (LMA) cuff is thought to be the etiology underlying many of the complications associated with the use of this device. Until now, there has not been a clinically acceptable method (besides direct measurement) to assure that the cuff pressure is maintained less than ...
Muraki Takayuki - - 2011
BACKGROUND: Although posterior capsule tightness is believed to cause abnormal contact in the subacromial space, it is not clear whether this tightness changes the contact between the acromion and humeral head. MATERIALS AND METHODS: Nine fresh, frozen cadaveric shoulders were used to measure contact pressure on the coracoacromial arch during ...
Baek H - - 2011
We developed nonintrusive methods for simultaneous electrocardiogram, photoplethysmogram and ballistocardiogram measurement that do not require direct contact between instruments and bare skin. These methods were applied to the design of a diagnostic chair for unconstrained heart rate and blood pressure monitoring purposes. Our methods were operationalized through capacitively coupled electrodes ...
Firat P G - - 2012
To evaluate the influence of silicone hydrogel contact lenses on the intraocular pressure (IOP) measurement using Goldmann applanation tonometry (GAT), non-contact tonometry (NCT), and Pascal dynamic contour tonometry (DCT). We included in the study 40 eyes of 40 patients who did not have any ocular or systemic diseases or contraindications ...
Xu Yingying - - 2011
By suitably pressurizing iron substrates under different conditions, the resulting α-Fe(2)O(3) nanostructures, formed by its direct thermal oxidation, can gradually change in succession from nanowires to nanoleaves and to micropillars as the pressure is increased. The inter-relation between the pressure conditions and the resulting nanostructure is studied by density functional ...
Larson Judd - - 2011
The measurement of vertical gas diffusivity and permeability of compacted municipal solid waste (MSW) using an analytical gas flow and transport model was evaluated. A series of pressure transducers were buried in a MSW landfill and in situ pressures were modelled using an algorithm that predicts soil-gas pressures based on ...
Obreschkow D - - 2011
Cavitation bubbles collapsing and rebounding in a pressure gradient ∇p form a "microjet" enveloped by a "vapor jet." This Letter presents unprecedented observations of the vapor jets formed in a uniform gravity-induced ∇p, modulated aboard parabolic flights. The data uncover that the normalized jet volume is independent of the liquid ...
Kao Daniel W K - - 2011
Maxillary sinus elevation surgery has been practiced successfully over the past several decades with good outcomes, but tears and perforations still occur in significant numbers. The presumed cause of these problems is the fact that all methods currently used place "point sources" of lifting pressure on the Schneiderian membrane. A ...
Brewer Lara - - 2011
OBJECTIVE: There is a need for an automated bedside functional residual capacity (FRC) measurement method that does not require a step change in inspired oxygen fraction. Such a method can be used for patients who require a high inspired oxygen fraction to maintain arterial oxygenation and for patients ventilated using ...
Alipour Fariborz - - 2012
Spectral measures of the glottal source were investigated using an excised canine larynx (CL) model for various aerodynamic and phonatory conditions. These measures included spectral harmonic difference H1-H2 and spectral slope that are highly correlated with voice quality but not reported in a systematic manner using an excised larynx model. ...
Rigo Vincent - - 2011
OBJECTIVE:: Selected optimal respiratory cycles should allow calculation of respiratory mechanic parameters focusing on patient-ventilator interaction. New computer software automatically selecting optimal breaths and respiratory mechanic derived from those cycles are evaluated. DESIGN:: Retrospective study. SETTING:: University level III neonatal intensive care unit. SUBJECTS:: Ten mins synchronized intermittent mandatory ventilation ...
Ren Yong-Sheng - - 2011
Endogenous hydrogen sulfide is a new neuromodulator which takes part in the regulation of central nervous system physiology and diseases. Whether endogenous hydrogen sulfide in the central nervous system regulates cardiovascular activity is not known. In the present study, we observed the hemodynamic changes of hydrogen sulfide or its precursor ...
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 ...
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 ...
Flynn Joseph T JT Seattle Children's Hospital, Seattle, WA 98105, USA. - - 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 ...
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 ...
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