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Results 351 - 400 of 2074
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Lamarre-Cliché Maxime - - 2011
Discordance between blood pressure (BP) measurement methods can occur and create ambiguity. New automated office BP monitors (AOBPs) are widely available, but their role is presently unclear. The objectives of this study are to quantify concordance among BP measurement methods and to define the diagnostic sensitivity, specificity, and predictive value ...
Lee Eun Joong - - 2011
Based on the optical deflection method, the resonant characteristics of a microcantilever under various pressure have been observed at room temperature to understand the pressure-dependent dissipation effect. Especially, the quality factor of the cantilever has been measured for up to fourth harmonic mode of cantilever resonance as a function of ...
Sanda Robert B - - 2011
Background: Hyperthermic Intraoperative Peritoneal Lavage (HIPL) is useful for bacterial decontamination and prevention of hypothermia during damage-control surgery (DCS). Little is known about the effect of HIPL on intra-abdominal pressure (IAP) alone or in combination with peritonitis. Aim: To determine the effects of HIPL at graded temperatures on IAP in ...
Hollow M R - - 2011
Baroreflex sensitivity (BRS) is known to be attenuated by inspiration and all the original BRS methodologies took this into account by measuring only in expiration. Spontaneous sequence analysis (SSA) is a non-invasive clinical tool widely used to estimate BRS in Man but does not take breathing into account. We have ...
Hong S S - - 2011
Ultrasonic sensors of 500 kHz frequency have been used to study the measuring of gas pressure in the range 1.33 × 10(3)-2.026 × 10(5) Pa. From the experimental data it was observed that amplitude of the transmitted ultrasound was dependent on gas pressure. The results confirm that by using appropriate ...
Schmidl Doreen - - 2011
The purpose of the present study was to investigate whether the nucleoside adenosine is involved in the regulatory processes of choroidal blood flow (ChBF) during an experimental decrease in ocular perfusion pressure (OPP). In this randomized, double-masked, placebo-controlled, two-way crossover study, 14 subjects received either intravenous adenosine or placebo on ...
Egan Patrick - - 2011
We present a method of measuring the refractive index of dry gases absolutely at 632.8 nm wavelength using a Fabry-Perot cavity with an expanded uncertainty of <3×10<sup>-9</sup> (coverage factor k=2). The main contribution to this uncertainty is how well vacuum-to-atmosphere compression effects (physical length variation) in the cavities can be corrected. ...
Bhavanani Ananda Balayogi - - 2011
Numerous scientific studies have reported beneficial physiological changes after short- and long-term yoga training. Suryanamaskar (SN) is an integral part of modern yoga training and may be performed either in a slow or rapid manner. As there are few studies on SN, we conducted this study to determine the differential ...
Erath Byron D - - 2011
A theoretical flow solution is presented for predicting the pressure distribution along the vocal fold walls arising from asymmetric flow that forms during the closing phases of speech. The resultant wall jet was analyzed using boundary layer methods in a non-inertial reference frame attached to the moving wall. A solution ...
Jain Mukul Kumar MK Department of Neuroanesthesiology, Institute of Human Behavior and Allied Sciences, Dilshad Garden, Delhi, - - 2011
Inflation and assessment of the endotracheal tube cuff pressure is often not appreciated as a critical aspect of endotracheal intubation. Appropriate endotracheal tube cuff pressure, endotracheal intubation seals the airway to prevent aspiration and provides for positive-pressure ventilation without air leak. Correlations between manual methods of assessing the pressure by ...
Soutello Ana Lúcia Soares AL Departamento de Enfermagem, Faculdade de Ciências Médicas, Universidade Estadual de Campinas, SP, Brazil. - - 2011
This study aimed to evaluate the feasibility, acceptability, ceiling and floor effects, reliability, and convergent construct validity of the Brazilian version of the Mini Cuestionario de Calidad de Vida en la Hipertensión Arterial (MINICHAL). The study included 200 hypertensive outpatients in a university hospital and a primary healthcare unit. The ...
Tsai Andrew Sh - - 2011
This paper aims to review the current methods available for the measurement of intraocular pressure (IOP) after laser in situ keratomileusis (LASIK) for the correction of myopia. Searches were performed for studies that assessed or compared various methods of obtaining IOP after myopic LASIK. The MEDLINE database was systemically reviewed ...
Daghma D S - - 2011
The high pressure freezing (HPF) followed by freeze substitution technique has advantages over chemical fixation in the context of preserving sample ultrastructure. However, when HPF is applied to cultured pollen grains, the large intercellular spaces present lead to a poor level of ultrastructure preservation. We report here that the mixing ...
Manakov Andrey Yu - - 2011
Experimental data on the pressure dependence of unit cell parameters for the gas hydrates of ethane (cubic structure I, pressure range 0-2 GPa), xenon (cubic structure I, pressure range 0-1.5 GPa) and the double hydrate of tetrahydrofuran+xenon (cubic structure II, pressure range 0-3 GPa) are presented. Approximation of the data using the cubic ...
Møller Niels Christian - - 2011
This study investigated the effect of commuter cycling on cardiorespiratory fitness in men and women. Secondary outcomes included body fat and blood pressure measurements. In February 2009, 48 volunteers from the Island of Funen, Denmark were randomly assigned to either "no change in lifestyle" or to "minimum 20 minutes of ...
Tsevdou M S - - 2011
High Hydrostatic Pressure (HP) processing has been suggested as an alternative method to improve textural attributes of dairy products. Since, the global market seeks improved functional foods, it is important to investigate whether HP processing can be applied to fermented dairy probiotic products. The inactivation kinetics of Bifidobacterium spp. in ...
Kollias Anastasios A Hypertension Centre, Third University Department of Medicine, Sotiria Hospital, Athens, - - 2012
Studies have reported tracking of blood pressure (BP) from childhood to adulthood but with inconsistent results mainly due to methodological and ethnic differences. We aimed to examine BP tracking during a 7-year period in a Greek cohort. This is a longitudinal school-based study conducted during 1990-96 in Athens, Greece. Children ...
Chen Wufeng - - 2011
Three-dimensional (3D) architectures of graphene are of interest in applications in electronics, catalysis devices, and sensors. However, it is still a challenge to fabricate macroscopic all-graphene 3D architectures under mild conditions. Here, a simple method for the preparation of 3D architectures of graphene is developed via the in situ self-assembly ...
Stevanella Marco - - 2011
The anterior mitral leaflet (AML) is a thin membrane that withstands high left ventricular (LV) pressure pulses 100,000 times per day. The presence of contractile cells determines AML in vivo stiffness and complex geometry. Until recently, mitral valve finite element (FE) models have neglected both of these aspects. In this ...
Takahashi Hakuo - - 2011
OBJECTIVE: Allowing patients to measure their blood pressure (BP) at home is recognized as being of clinical value. However, it is not known whether BP measurement is usually taken correctly outside of a clinical setting. Automated proper wrapping of the cuff and correction of wrong posture will help in taking ...
Deschamps T - - 2011
We present low-frequency Raman scattering of pure GeO(2) glass under pressure up to 4 GPa, corresponding to an elastic transformation. Intensity variation and frequency shift of the boson peak are analysed and compared to the Debye model. The decrease of the boson peak intensity scaled by the Debye energy is ...
van Ooij P J A M - - 2011
Rationale:  Breathing oxygen with a partial pressure of >50 kPa causes pulmonary oxygen toxicity (POT), resulting in a decrease in vital capacity (VC) and in diffusing capacity for carbon monoxide (DLco). As submersion is thought to potentiate POT, we hypothesized that submerged oxygen divers are at increased risk for POT. Objective:  ...
Claramunt R - - 2011
The medium-term fatigue behaviour of calf pericardium (similar to the one used to manufacture cardiac bioprostheses valve leaflets) has been studied. 96 samples were tested under fatigue subjecting them to biaxial stress at 1 Hz frequency for 5000 cycles, in 4 series of 24 samples, at several supra-physiological mean pressures and ...
Shih Andre - - 2011
Objective - To determine if metatarsal artery pressure (COmet) is comparable to femoral artery pressure (COfem) as the input for transpulmonary pulse contour analysis (PiCCO) in anesthetized dogs, using the lithium dilution method (LiDCO) as a standard for cardiac output (CO) measurement. Design - Prospective randomized study. Setting - University ...
Valverde Alexander - - 2011
Objective - To compare the determination of cardiac output (CO) via arterial pulse pressure waveform analysis (FloTrac/Vigileo) versus lithium dilution method. Design - Prospective study. Setting - University teaching hospital. Animals - Six adult dogs. Interventions - Dogs were instrumented for CO determinations using lithium dilution (LiDCO) and FloTrac/Vigileo methods. ...
Monte-Moreno Enric - - 2011
OBJECTIVE: This work presents a system for a simultaneous non-invasive estimate of the blood glucose level (BGL) and the systolic (SBP) and diastolic (DBP) blood pressure, using a photoplethysmograph (PPG) and machine learning techniques. The method is independent of the person whose values are being measured and does not need ...
Souza Weimar Kunz Sebba Barroso de - - 2011
BACKGROUND: Casual blood pressure (BP) measurement by healthcare professionals is subject to great variability and new methods are necessary to overcome this limitation. OBJECTIVE: To compare and assess the correlation between the BP levels obtained by self-measured BP (SMBP), casual BP measurement and ambulatory blood pressure monitoring (ABPM). METHODS: We ...
Nager Charles W CW Department of Reproductive Medicine, University of California San Diego, San Diego, California 92037, USA. - - 2011
We determined whether baseline urodynamic study variables predict failure after mid urethral sling surgery. Preoperative urodynamic study variables and postoperative continence status were analyzed in women participating in a randomized trial comparing retropubic to transobturator mid urethral sling. Objective failure was defined by positive standardized stress test, 15 ml or ...
Weingarten N Scott - - 2011
Molecular dynamics (MD) simulations using a recently developed first-principles-based embedded-atom-method (EAM) potential are used to simulate the exothermic alloying reactions of a Ni/Al bilayer initially equilibrated at 1200 K. Simulations are performed in the isobaric-isoenthalpic (NPH) ensemble, which provides insight into the influence of pressure on atomic mixing and the subsequent ...
Machadox Leonardo Machado - - 2011
PURPOSE:: To determine and compare 20-, 23-, and 25-gauge retinal infusion air jet impact pressure (force per unit area) in an experimental setting. METHODS:: Experimental laboratory investigation. Infusion cannulas were connected to a compressed air system. A controlled valve mechanism was used to obtain increasing levels of infusion pressure. Each ...
Canola P A - - 2011
Reasons for performing study: Standing laparoscopic procedures, facilitated by abdominal insufflation with carbon dioxide, are being employed to an increasingly greater extent in horses. However, a sustained increase in abdominal pressure may be life-threatening. A practical method for intra-abdominal pressure (IAP) assessment is imperative. Although indirect methods for estimating IAP ...
Urita Koki - - 2011
An outstanding compression function for materials-preparation of nanospaces of single walled carbon nanohorn (SWCNH) was studied using the B1-to-B2 solid phase transition of KI crystals at 1.9 GPa. High-resolution transmis-sion electron microscopy and synchrotron X-ray diffraction examinations evidenced that KI nanocrystals doped in the nanotube spaces of SWCNH below 0.1 ...
Bi Ming-Shu - - 2011
A model has been developed to predict the thermal response of liquefied-pressure gases (LPG) tanks under fire, and three-dimensional numerical simulations were carried out on a horizontal LPG tank which was 60% filled. Comparison between numerical predictions and published experimental data shows close agreement. The attention is focused on the ...
Varga-Pintér Barbara - - 2011
Background: Regular physical activity has a favorable effect upon the prevention and treatment of hypertension. Various movements in sports, however, affect blood pressure (BP) differently. Methods: In the present study, the resting BP data of a large number (3,697) of young men and women (age: 19-40 years) who participated in ...
van Schalkwyk J M - - 2011
BACKGROUND: /st> Numerous studies have shown smoothing and inaccuracies in handwritten anaesthetic records, but the clinical relevance of these findings is unclear. We therefore sought to determine whether the behaviour of anaesthetists differed in assessing anaesthetic records re-synthesized from either handwritten or automated records. METHODS: /st> In a recent New ...
Alomari A H - - 2011
We propose a dynamical model for mean inlet pressure estimation in an implantable rotary blood pump during the diastolic period. Non-invasive measurements of pump impeller rotational speed (ω), motor power (P), and pulse width modulation signal acquired from the pump controller were used as inputs to the model. The model ...
Prunet Bertrand - - 2011
OBJECTIVE: The aim of this study is to prospectively compare the accuracies of transcranial color-coded sonography (TCCS) and transcranial Doppler (TCD) in the diagnosis of elevated intracranial pressure. METHODS: A prospective, blinded, head-to-head comparison of TCD and TCCS methods using intracranial pressure (ICP) measured continuously via an intraparenchymal catheter as ...
Djavani Gidlund K - - 2011
OBJECTIVES: There is no ideal method to monitor colonic perfusion after abdominal aortic aneurysm (AAA) repair. The aim was to evaluate extraluminal sigmoid colon tonometry, comparing with the established intraluminal method. METHODS: Eighteen patients were monitored with both methods, 10 after elective and eight after ruptured AAA repair. One tonometric ...
Riddiford-Harland Diane L - - 2011
Abstract Objective. Previous research has shown that obese children have thicker plantar fat pads compared to non-obese children. As it is uncertain how this thickness influences dynamic foot function, this study aimed to investigate the relationship between dynamic plantar pressures generated beneath the feet of school-aged children and their medial ...
Holt Tanya R - - 2011
OBJECTIVE:: To determine the accuracy of arterial blood pressure monitoring using 1) direct arterial; 2) automated oscillometric; and 3) sphygmomanometer/Doppler ultrasound measurements in pediatric intensive care patients comparing methods 1) and 2) with 3), the gold standard used to define normal blood pressure. DESIGN:: Prospective observational study. SETTING:: Pediatric intensive ...
Simon Scott D - - 2011
Objective A steel-reinforced and a nitanol-reinforced microcatheter are both approved for use with Onyx HD-500 embolization of intracranial aneurysms. The biomechanical behavior of these catheters when used with high viscosity embolic liquids is poorly understood. We performed biomechanical laboratory testing and examined our clinical experience to identify situations where one ...
Kiss Péter T - - 2011
By decreasing the steepness of the repulsive wing in the intermolecular potential, one can extend the applicability of a water model to the high pressure region. Exploiting this trivial possibility, we published a polarizable model of water which provided good estimations not only of gas clusters, ambient liquid, hexagonal ice, ...
Meers Caroline M - - 2011
BACKGROUND: Evidence of aspiration remains a major reason for declining donor lungs contributing to current organ shortage. The aim of the present ex vivo lung perfusion (EVLP) study was to compare lungs injured by gastric juice (GJ) with normal lungs. METHODS: Pigs (32.3 ± 11.2 kg) were divided into two groups. ...
Saremi Farhood - - 2011
OBJECTIVES: Epicardial adipose tissue (EAT) is an important structure both as an active secretor of hormones and cytokines that play a role in the development of atherosclerosis, as well as its potential as a cardiac risk marker. The purpose of this article was to determine an easy but accurate quantification ...
Kainz Hans - - 2012
Femoro-patellar complications are one of the most common problems after total knee arthroplasty (TKA). TKA components that reduce patellar loads and preserve physiological patellar kinematics should reduce these problems. Therefore, we evaluated the patellar kinematics and the retro-patellar contact characteristics in both the intact knee and in the TKA-knee. Eight ...
Yarows Steven A - - 2011
PURPOSE: To determine whether the HoMedics Walgreens Deluxe Arm Blood Pressure device (WGNBPA-540) meets the Association for the Advancement of Medical Instrumentation and the Working Group on Blood Pressure Monitoring of the European Society of Hypertension International Protocol accuracy requirements. MATERIALS AND METHODS: Simultaneous auscultatory measurements by two observers were ...
Bland Marian - - 2011
This research sought to evaluate the contribution of simulation to the development of a fundamental nursing skill, blood pressure measurement. Year one nursing students at UCOL, New Zealand (n = 75) and the University of Huddersfield, England (n = 55) completed questionnaires about their confidence/competence levels in blood pressure measurement at the conclusion of ...
Templier François - - 2011
OBJECTIVE: The objective of our study was to describe noninvasive ventilation (NIV) practices (pressure support ventilation and continuous positive airway pressure) in French out-of-hospital mobile intensive care units (SMUR) and their compliance with national consensus guidelines. METHOD: Online inquiry into practices of NIV among managers of French SMUR. Analyzed data ...
Huang Wei - - 2011
A continuum model was introduced to analyze the pressure-flow relationship for steady flow in human pulmonary circulation. The continuum approach was based on the principles of continuum mechanics in conjunction with detailed measurement of vascular geometry, vascular elasticity and blood rheology. The pulmonary arteries and veins were considered as elastic ...
Sabater-Hernández Daniel - - 2011
To assess the agreement between repeated blood pressure (BP) measurements taken by community pharmacists during visits to the community pharmacy on four separate occasions, and to assess the agreement between the community pharmacy BP (CPBP) measurement method and ambulatory BP monitoring (ABPM) in order to determine the CPBP measurements from ...
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