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Results 351 - 400 of 2051
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Kollias Anastasios - - 2011
BACKGROUND: 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. Methods: This is a longitudinal school-based study conducted during 1990-96 in Athens, ...
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 PeĢter 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 ...
Aldudak Bedri - - 2011
To evaluate the effect of the mode of delivery on the course of pulmonary artery pressure (PAP) in neonates. Eighty healthy and term neonates delivered in the maternity wards of Dunya Maternity Hospital, Camlica Maternity Center, and Sultan Maternity Hospital in Diyarbakir, Turkey from June to August 2009 were included ...
Nguyen Xuan P - - 2011
Abstract In the present article, we describe the validation of a new non-invasive method for measuring blood pressure (BP) which also enables to determine the three BP values: systolic, diastolic and mean value. Our method is based on the pulse transit time (PTT) measurement along an artery directly at the ...
Johnston Matthew S - - 2011
Although the use of indirect methods for measuring blood pressure has become commonplace in dogs and cats, it is uncertain whether these methods can be extended to avian species with any proven accuracy or precision. To evaluate the precision of indirect blood pressure measurement in conscious psittacine birds by the ...
Vieira Junior Francisco Ubaldo - - 2011
INTRODUCTION: Roller pumps play an important role in extracorporeal circulation. However, occlusion of the rollers should be adequately performed and this can be adjusted mainly by two methods: static and dynamic. OBJECTIVE: To investigate how the Brazilian perfusionists adjust arterial roller pumps in their services and evaluate the application of ...
Schizas Alexis M P - - 2011
Anal manometry is routinely used in the assessment of the anal sphincters in patients with fecal incontinence or suspected sphincter injury. Such physiological information is complementary to the anatomical assessment provided by anal endosonography. The evolution of 3-dimensional anal endosonography provides more diagnostically useful information in complex cases. Vector volume ...
Sato Koichi - - 2011
Since direct hemoperfusion with polymyxin B immobilized fiber (PMX-DHP) received its product certification for use in Europe in 1998, several prospective randomized controlled trials (RCTs) have been conducted in European countries. The first RCT, performed in six European academic medical centers in 2005, concluded that PMX-DHP is associated with improved ...
Pees Edward H - - 2011
A method is presented for efficiently computing the propagating pressure field backscattered by an arbitrarily shaped, weakly scattering, three-dimensional object. This is accomplished by drawing upon a previously reported relationship between the boundary condition on a two-dimensional radiating aperture and the pressure propagating along an axis normal to the aperture, ...
Hsiu H - - 2011
The blood pressure (BP) waveform is suggested to reflect the whole-body blood supply distribution, but its non-invasive assessment is not sufficiently user friendly for practical applications. The present authors studied the correlation between BP and photoplethysmography (PPG) waveforms, with the aim of determining the optimal range for contact pressure stimulation ...
Oosterlinck Maarten - - 2011
Objective-To determine the accuracy of pressure plate kinetic asymmetry indices (ASIs) for diagnosis of unilateral hind limb lameness in dogs and their correlation with visual gait assessment (VGA) scores. Animals-9 healthy dogs and 16 dogs with previously diagnosed unilateral rupture of the cranial cruciate ligament and concurrent unilateral hind limb ...
Schmölzer G M - - 2011
We describe how a Respiratory Function Monitor (RFM) can aid during simulation-based manikin training. We demonstrate how a RFM can provide quantitative and qualitative assessment of the trainee's resuscitation technique. A RFM can assist i) to identify correct mask hold and positioning techniques; ii) to assess the delivered airway pressures ...
Jonely Holly - - 2011
BACKGROUND: Information is limited about the relationships between clinical measures of static foot posture and peak plantar pressures under the medial column of the foot. The purpose was to examine these relationships during static standing and walking. METHODS: A single-group exploratory design using correlation and regression was used to determine ...
Reibstein S - - 2011
We report on Brillouin and in situ small angle X-ray scattering (SAXS) analyses of topological heterogeneity in compressed sodium borosilicate glasses. SAXS intensity extrapolated to very low angular regimes, I(q = 0), is related to compressibility. From Brillouin scattering and analyses of the elastic properties of the glass, the Landau-Placzek ...
Aquilina Kristian - - 2011
Object Intracranial pressure (ICP) monitors are currently based on fluid-filled, strain gauge, or fiberoptic technology. Capacitive sensors have minimal zero drift and energy requirements, allowing long-term implantation and telemetric interrogation; their application to neurosurgery has only occasionally been reported. The aim of this study was to undertake a preliminary in ...
Zhu Yong-Sheng - - 2011
This study explored a novel method for measuring cerebrovascular impedance to quantify the relationship between pulsatile changes in cerebral blood flow (CBF) and arterial pressure. Arterial pressure in the internal or common carotid artery (applanation tonometry), CBF velocity in the middle cerebral artery (transcranial Doppler), and end-tidal CO(2) (capnography) were ...
Krol Wojciech - - 2011
Aims: The athlete's heart is a widely discussed topic regarding the adaptation of the left ventricle (LV) to regular training. The data on the morphology and-even more-the function of the right ventricle (RV) are less well studied. The aim of the study was to assess the influence of prolonged exertion ...
Gundogdu Gokhan - - 2011
Abstract Objective. In a cystometry procedure in a child with myelomeningocele (MMC), a pressure increase in the abdominal pressure (P (abd)) tracing was detected during filling. This pressure alteration was not related to other known events (straining, talking, rectal contractions). This study was conducted to investigate this phenomenon. Material and ...
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