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Results 301 - 350 of 2073
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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 MK Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT 06520, USA. - - 2011
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. To investigate the relationships between saddle design, seat pressures, and genital nerve function in female, competitive cyclists. We previously compared ...
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 ...
Fatehee Naeem - - 2011
To investigate the effects of acute elevations in intraocular pressure (IOP) on the cup, prelaminar, and lamina cribrosa regions of the porcine optic nerve head (ONH). Ex vivo imaging of 10 porcine ONHs was performed using spectral-domain optical coherence tomography (OCT). The IOP was manipulated with a pressure head and ...
Inui Shigeki - - 2011
Objective  To assess dermoscopic findings of "non-blanchable erythema" in stage I pressure ulcers and to determine their characteristics. Methods  Dermoscopic examinations using DermLite(®) II pro of redness over a bony prominence that did not resolve within 30 min of pressure relief or if a positional change was impossible for three days. Results  ...
Lim Einly - - 2011
We propose a deadbeat controller for the control of pulsatile pump flow (Q(p) ) in an implantable rotary blood pump (IRBP). Noninvasive measurements of pump speed and current are used as inputs to a dynamical model of Q(p) estimation, previously developed and verified in our laboratory. The controller was tested ...
He Shao-Ru - - 2011
Echocardiography is regarded as a gold standard for measuring hemodynamic values. The ultrasonic cardiac output monitor (USCOM) is a new method for measuring hemodynamics and could provide non-invasive point of care guidance. So far, there are no published USCOM reference values for neonates, nor has USCOM's accuracy been established in ...
Alavarce Debora Cristina - - 2011
Arterial blood pressure measurement is an essential conduct to evaluate the condition of the cardiovascular system. Digital teaching environment is a powerful tool for the teaching-learning process, because it adds meaning and concreteness to the content to be learned, and it can be useful to instruct this procedure. The objective ...
Akpolat Tekin - - 2011
Home blood pressure monitoring requires a precise blood pressure measurement technique and an accurate sphygmomanometer. The oscillometric sphygmomanometers have some drawbacks including in accuracy. The aims of this study were to assess the inaccuracy of home sphygmomanometers using a method first proposed in 2009 and to compare validated devices with ...
Shon In-Jin - - 2011
TiCu nanopowder was produced using an electrical wire explosion method and subsequently consolidated into dense nanostuctured TiCu by a high frequency induction heated sintering method. The consolidation was accomplished by the combination of an induced current and a high mechanical pressure within two minutes. This process results in very quick ...
Eibel Bruna - - 2011
Functional electrical stimulation (FES) is a rehabilitation method that can revert alterations provoked by aging, such as reductions in functional capacity and modifications on blood pressure variability (BPV). To evaluate the training effects of FES on functional capacity and BPV in a centenarian woman. A 101-year-old woman without previous disease ...
Xu Da - - 2011
We investigated the system identification approach for potentially improved estimation of pulse transit time (PTT), a popular arterial stiffness marker. In this approach, proximal and distal arterial waveforms are measured and respectively regarded as the input and output of a system. Then, the system impulse response is identified from all ...
Weenink Robert P - - 2011
OBJECTIVE: Cerebral arterial gas embolism (CAGE) is a serious hazard in cardiovascular surgery and other invasive procedures. We used a swine model of CAGE to determine if quantitative electroencephalography (qEEG) is a useful tool in diagnosis and prognostication of CAGE. METHODS: 0.05ml/kg of air was injected into the ascending pharyngeal ...
Myrie Semone B - - 2011
Background: Impaired fetal growth and rapid postnatal growth are associated with programming of hypertension and metabolic syndrome in adulthood. Objectives: This study evaluated this phenomenon in a novel spontaneous intrauterine growth-restricted (IUGR) model in Yucatan miniature pigs. Methods: IUGR piglets (n = 6, 3 days old, 0.73 ± 0.11 kg) ...
Holey Liz A - - 2011
The purpose of this study was to measure effects of connective tissue massage (CTM) on the autonomic nervous system using thermography and physiological measurements. A repeated-measures design was used. The setting was a university laboratory. Skin temperature at the site of massage, blood pressure, heart rate, and dorsal foot temperature ...
Verberk Willem J - - 2011
BackgroundScreening for inter-arm difference (IAD) of blood pressure (BP) at each first visit is recommended by numerous guidelines whereas it is unclear whether the method by which IAD is measured has significant influence on the IAD value.MethodsA systematic review is made of the studies reporting on double-arm measurements and the ...
Croccolo Fabrizio - - 2011
In the present work binary mixtures of varying concentrations of two miscible hydrocarbons, 1,2,3,4-tetrahydronaphtalene (THN) and n-dodecane (C12), are subjected to increasing pressure up to 50 MPa in order to investigate the dependence of the so-called concentration contrast factor (CF), i.e., (∂n∕∂c)(p, T), on pressure level. The refractive index is ...
Latour Ewa - - 2011
Analysis of pedobarographical data requires geometric identification of specific anatomical areas extracted from recorded plantar pressures. This approach has led to ambiguity in measurements that may underlie the inconsistency of conclusions reported in pedobarographical studies. The goal of this study was to design a new analysis method less susceptible to ...
Rossi Rosario - - 2011
INTRODUCTION: : Endothelial dysfunction is a well-demonstrated independent predictor of cardiovascular events in hypertensive postmenopausal women. Accordingly, it is plausible that improving endothelial function could represent an adjunctive target for antihypertensive treatment. The aim of our study was to evaluate the effect of pharmacologic treatment on endothelial function in the ...
Macintyre Lisa - - 2011
Accurate measurement of the pressure delivered by medical compression products is highly desirable both in monitoring treatment and in developing new pressure inducing garments or products. There are several complications in measuring pressure at the garment/body interface and at present no ideal pressure measurement tool exists for this purpose. This ...
Peterson Ronald W RW Graduate Group in Biochemistry & Molecular Biophysics and Department of Biochemistry & Biophysics, University of Pennsylvania, Philadelphia, PA 19104-6059, United - - 2011
Encapsulation within reverse micelles dissolved in low viscosity fluids offers a potential solution to the slow tumbling problem presented by large soluble macromolecules to solution NMR spectroscopy. The reduction in effective macromolecular tumbling is directly dependent upon the viscosity of the solvent. Liquid ethane is of sufficiently low viscosity at ...
Chu Shengqi - - 2011
Differential EXAFS (DiffEXAFS) is able to detect subtle atomic perturbations in the local area of the absorbing atom. Here a new method of performing DiffEXAFS experiments under the modulation of high pressure has been developed. Periodic pressure was achieved in the gasket with the help of a dynamic diamond anvil ...
Moser D - - 2011
Computational thermodynamics using density functional theory ab initio codes is a powerful tool for calculating phase diagrams. The method is usually applied at the standard pressure of p = 1 bar and where the Gibbs energy is assumed to be equal to the Helmholtz energy. In this work, we have calculated the ...
Vavourakis V - - 2011
Hemodynamic conditions in large arteries are significantly affected by the interaction of the pulsatile blood flow with the distensible arterial wall. A numerical procedure for solving the fluid-structure interaction problem encountered in cardiovascular flows is presented. We consider a patient-specific carotid bifurcation geometry, obtained from 3D reconstruction of in vivo ...
Daoud Ehab G - - 2011
Airway Pressure Release Ventilation (APRV) is inverse ratio pressure controlled intermittent mandatory ventilation. It is based on the principle of open lung approach. It has many purported advantages over conventional ventilation including alveolar recruitment, improved oxygenation, preservation of spontaneous breathing, improved hemodynamics, and potential lung protective effects. It has many ...
Lan H - - 2011
This paper presents a 3D finite element upper arm model, validated by experiments as well as clinical data, used to study the error introduced in blood pressure measurements due to variability of arm tissue mechanical properties. The model consists of three separate cylindrical parts: soft tissue, bone and brachial artery. ...
Zaleski-Ejgierd Patryk - - 2011
A wide decomposition pressure range of 132 GPa is predicted for PbH_{4} above which it emerges in very different forms compared with its group-14 congeners. This triply Born-Oppenheimer system is a nonmolecular, three-dimensional, metallic alloy, despite a prominent layered structure. A significant number of enthalpically near-degenerate structures, with exceedingly small energy ...
Hu Xiao - - 2011
Peanut protein isolate (PPI) was treated by high-pressure microfluidization (120 Peanut protein isolate (PPI) was treated by high-pressure microfluidization (40, 80, 120 and 160 MPa) and/or transglutaminase (TGase) cross-linking. It was found that individual microfluidization at 120 MPa was more effective to improve the solubility, emulsifying properties and surface hydrophobicity ...
Zenk R - - 2011
For car manufacturers, seat comfort is becoming more important in distinguishing themselves from their competitors. Therefore, many studies on participative seat comfort are carried out. In this paper, an objective assessment approach is reported which evaluates the concept of "optimal load distribution", based on the identification of a close relationship ...
Sato Hajime - - 2011
The quality of chest compression (CC) is influenced by the surface supporting the patient. The present study compared chest compression depth with and without a rigid backboard on an operating table with a pressure-distributing mattress. We hypothesized that the presence of a backboard would result in an increased depth of ...
Schizas A M P - - 2011
Background  Vector volume manometry (VVM) can be used to assess patients with fecal incontinence. The VVM may be performed using a station pull through, or an automated technique. Currently no standard technique or equipment exists to assess anal canal VVM. This study aimed to assess the different techniques to produce ...
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 ...
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