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Shaw Lisa L Institute for Ageing and Health (Stroke Research Group), Newcastle University, Newcastle upon Tyne, NE4 5PL, England, - - 2011
High blood pressure during acute stroke is associated with poorer stroke outcome. Previous trials have failed to show benefit from lowering blood pressure but treatment may have been commenced too late to be effective. The earliest that acute stroke treatments could be initiated is during contact with the emergency medical ...
Zollinger Sue Anne - - 2011
Bird song is a widely used model in the study of animal communication and sexual selection, and several song features have been shown to reflect the quality of the singer. Recent studies have demonstrated that song amplitude may be an honest signal of current condition in males and that females ...
Liu Guo - - 2011
To characterize the effects of circadian rhythm, feeding time, age, general anesthesia, and ocular hypotensive compounds on intraocular pressure (IOP) of the Tibetan monkey (Macaca thibetana). Tibetan monkeys were trained for IOP measurement with the TonoVet® rebound tonometer without sedation or anesthesia. Their circadian IOP fluctuation was monitored every 3 ...
Moslehpour Mohsen M Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824, USA. - - 2011
We previously developed a technique for estimating relative cardiac output (CO) change by long time interval analysis of a radial arterial blood pressure waveform. This technique analyzes the slow, beat-to-beat changes in the waveform to circumvent the confounding wave reflections but assumes constant arterial compliance (AC). Here, we sought to ...
García Xaime - - 2011
Recent interest in functional hemodynamic monitoring for the bedside assessment of cardiovascular insufficiency has heightened. Functional hemodynamic monitoring is the assessment of the dynamic interactions of hemodynamic variables in response to a defined perturbation. Accordingly, fluid responsiveness can be predicted in a quantities fashion by measuring as arterial pulse pressure ...
Zhang Guanqun G Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824, USA. - - 2011
We compared pulse arrival time (PAT) and pulse transit time (PTT) in terms of their ability to track diastolic pressure (DP). We performed the comparison using high fidelity, invasive arterial waveforms recorded from six dogs during multiple interventions. On average, DP ranged from 40 to 106 mmHg and therefore varied ...
Reiss Lucy Kathleen - - 2011
Mechanical ventilation (MV) of mice is increasingly required in experimental studies, but the conditions that allow stable ventilation of mice over several hours have not yet been fully defined. In addition, most previous studies documented vital parameters and lung mechanics only incompletely. The aim of the present study was to ...
Delles Michael M Department of Diagnostic and Interventional Radiology, University Hospital Heidelberg, 69120 Heidelberg, Germany. - - 2011
In cardiovascular diagnostics, phase-contrast MRI is a valuable technique for measuring blood flow velocities and computing blood pressure values. Unfortunately, both velocity and pressure data typically suffer from the strong image noise of velocity-encoded MRI. In the past, separate approaches of regularization with physical a-priori knowledge and data representation with ...
Lee Jung-Hoon - - 2011
This study investigated changes in craniocervical and trunk flexion angles and gluteal pressure on both sides during visual display terminal (VDT) work with continuous cross-legged sitting. The gluteal pressures of ten VDT workers, who were recruited from laboratories, were measured using a Teckscan system and videotaped using a single video ...
Kuga Keisuke - - 2011
Abstract When selecting anti-hypertensives, most physicians do not consider daily blood pressure (BP) variation. To evaluate the effectiveness of anti-hypertensives on the temporal profile of BP, we proposed three new parameters obtained by ambulatory BP monitoring and evaluated these parameters by comparing 5 mg of amlodipine and 40 mg of ...
Mafi Majid M School of Information Technology & Engineering, University of Ottawa, Ottawa, ON, Canada. - - 2011
A novel pulse morphology-based approach for estimation of blood pressure from non-invasive oscillometric blood pressure measurement is presented. Quantitative measures that describe the pulse morphology are utilized to obtain the estimates of mean arterial, systolic, and diastolic pressures. Preliminary results obtained from a small set of measurements are used to ...
Psatha Evdokia - - 2011
To evaluate the clinical efficacy and cardiorespiratory effects of alfaxalone as an anaesthetic induction agent in dogs with moderate to severe systemic disease. Randomized prospective clinical study. Forty dogs of physical status ASA III-V referred for various surgical procedures. Dogs were pre-medicated with intramuscular methadone (0.2 mg kg(-1) ) and ...
Bacchus Romel - - 2011
The purpose of this study is to determine primarily the occurrence of left ventricular hypertrophy (LVH) in normotensive Trinidadians. Enrollment into the study required participants to have normal blood pressure (≤ 140/90) using the JNC 7 (The Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment ...
Gregory Shaun D SD Faculty of Built Environment and Engineering and Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia. - - 2011
Mock circulation loops (MCLs) are used to evaluate cardiovascular devices prior to in-vivo trials; however they lack the vital autoregulatory responses that occur in humans. This study aimed to develop and implement a left and right ventricular Frank-Starling response in a MCL. A proportional controller based on ventricular end diastolic ...
Hlavackova Petra - - 2011
The present study was designed to assess the relative contribution of each leg to unperturbed bipedal posture in lower limb amputees. To achieve this goal, eight unilateral traumatic trans-femoral amputees (TFA) were asked to stand as still as possible on a plantar pressure data acquisition system with their eyes closed. ...
Xu Ke K Faculty of Human Science, Australian School of Advanced Medicine, Macquarie University, Sydney, NSW 2109, Australia. - - 2011
With increasing interest in the effect of postural changes on arterial blood pressure and vascular properties, it is important to understand effects of pressure-dependent arterial compliance. This study investigates effects of pressure-dependent compliance on pulse wave velocity (PWVar), pressure wave shape, and transmission characteristics in an arterial model of the ...
Yasar Sevil - - 2011
Evidence suggests that elevated systolic blood pressure (SBP) and pulse pressure (PP) in midlife is associated with increased risk for cognitive impairment later in life. There is mixed evidence regarding the effects of late life elevated SBP or PP on cognitive function, and limited information on the role of female ...
Ogawa Osamu - - 2011
A young woman who was experiencing repeated convulsions was admitted. The patient's brain magnetic resonance image revealed reversible posterior leukoencephalopathy. Blood pressure fluctuated at times to more than 200 mmHg, and the measurement of the right and left upper arms differed by approximately 70 mmHg. Enhanced computed tomography revealed stenotic ...
Baba Takashi - - 2011
Rapid and continuous pressure treatment was realized using a hydraulic pump and the momentary decompression following high pressurization was used to inactivate bacteria. The number of colony-forming E. coli decreased to 1/1000 in response to 10 cycles of pressure treatment. In groundwater samples, repeated pressure treatment led to a two-log ...
Zhao Chunfeng C Orthopedic Biomechanics Laboratory, Division of Orthopedic Research, Department of Orthopedic Surgery, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905, - - 2011
The purpose of this study was to investigate the effect of carpal tunnel pressure on the gliding characteristics of flexor tendons within the carpal tunnel. Eight fresh human cadaver wrists and hands were used. A balloon was inserted into the carpal tunnel to elevate the pressure. The mean gliding resistance ...
Mickle Karen J - - 2011
It has been speculated that high plantar pressures might cause foot pain and discomfort which, in turn, may discourage children from being physically active and result in them spending more time in sedentary activities. The purpose of this study was to determine whether plantar pressure distributions generated by preschool children ...
Nienaber Matthew - - 2011
A novel impulsive cell pressurization experiment has been developed using a Kolsky bar device to investigate blast-induced traumatic brain injury (TBI). We demonstrate in this video article how blast TBI-relevant impulsive pressurization is applied to the neuronal cells in vitro. This is achieved by using well-controlled pressure pulse created by ...
Spillner Jan - - 2011
In right ventricular failure (RVF) a decrease of right ventricular afterload and improvement of left atrial filling could be achieved by a pulmonary artery-left atrial (PA)-shunt. To avoid cyanosis, artificial oxygenation is necessary. In 11 pigs a PA-shunt was created. An interventional lung assist device (ILA) was installed from the ...
Parikh Rajul S - - 2011
Glaucoma is one of the leading causes of blindness worldwide. Various randomized controlled clinical trials have shown that lowering intraocular pressure (IOP) does reduce progression of primary open-angle glaucoma. However, there is lots of interest in nonpharmacological options that includes lifestyle adjustment and alternative and complementary therapy (ACT). At least ...
Sakaue Hirotaka - - 2011
A pressure-sensitive paint (PSP) with fast response characteristics that can be sprayed on a test article is studied. This PSP consists of a polymer for spraying and a porous particle for providing the fast response. We controlled the polymer content (%) from 10 to 90% to study its effects on ...
Acharya Ganesh - - 2011
We tested the hypothesis that, in acute metabolic acidemia, the fetal left ventricle (LV) has the capacity to increase its contractility in response to angiotensin II infusion. Eleven ewes and their fetuses were instrumented at 127-138/145 days of gestation. The effect of angiotensin II on fetal LV function was assessed ...
Simon Marc A - - 2011
Right ventricular (RV) dysfunction is the main cause of death in pulmonary arterial hypertension (PAH). Our understanding of the pathophysiology of RV dysfunction is limited but improving. Methods to better diagnose RV dysfunction earlier and treatments specifically designed to minimize or reverse the remodeling process are likely to improve outcomes. ...
Shyu Liang-Yu LY Department of Biomedical Engineering, Chung Yuan Christian University, Chung Li 32023, Taiwan. - - 2011
This study develops a system to obtain continuous blood pressure signal and impedance plethysmography (IPG) signal, simultaneously. Based on the principle of impedance measurement, the peripheral vessel volume change can be computed from the IPG signal. Equipped with simultaneous information of pressure and volume, a pressure-volume (PV) loop can be ...
Frydrychowski Andrzej F - - 2011
The objective was to assess changes in the width of the subarachnoid space (SAS) and amplitude of cerebrovascular pulsation (CVP) during acute elevation of intracranial pressure (ICP) using Near Infrared Transillumination/Back Scattering Sounding (NIR-T/BSS). Changes in the width of the SAS and amplitude of CVP were observed in rabbits during ...
Ram C Venkata S - - 2011
Hypertension is an increasingly prevalent cardiovascular risk factor associated with high rates of morbidity and mortality. Lowering blood pressure (BP) to recommended levels reduces the risk of hypertension-associated cardiovascular events. Despite current treatment options and recommendations, the BP of many patients remains suboptimally controlled. There is a need for more ...
Singh Aditya A Electrical Engineering department of University of Hawaii at Manoa, Honolulu 96822, USA. - - 2011
The use of a Continuous Wave (CW) quadrature Doppler radar is proposed here for continuous non-invasive Pulse Pressure monitoring. A correspondence between the variation in systemic pulse and variation in the displacement of the chest due to heart is demonstrated, establishing feasibility for the approach. Arctangent demodulation technique was used ...
Harris Mark Anglin - - 2011
Several cyanide-associated health disorders have been linked with frequent consumption of mildly toxic cassava (Manihot esculenta crantz) products in individuals on a low-protein diet. Production of bread from cassava often involves application of prolonged physical pressure (pressing) to the freshly grated root for several hours. This study aimed to determine ...
Sanders Joan E - - 2011
Bioimpedance analysis was used to measure the residual limb fluid volume of seven transtibial amputee subjects using elevated vacuum sockets and nonelevated vacuum sockets. Fluid volume changes were assessed during sessions with the subjects sitting, standing, and walking. In general, fluid volume losses during 3 or 5 min walks and ...
Mañosa Lluís - - 2011
Application of hydrostatic pressure under adiabatic conditions causes a change in temperature in any substance. This effect is known as the barocaloric effect and the vast majority of materials heat up when adiabatically squeezed, and they cool down when pressure is released (conventional barocaloric effect). There are, however, materials exhibiting ...
Nam Kyoung Won - - 2010
The use of the intrathecal infusion pump for therapeutic treatment and pain management is increasing. For example, one such application is the pain treatment of cancer patients suffering from severe chronic pain, where all other treatment methods have failed. This method is gaining popularity because of its high cure effect ...
Russell David - - 2011
Merging data from existing electronic patient records, and electronic hospital discharge and cause of death registers, is a fast and relatively inexpensive method for comparing different treatments with regard to clinical outcome. This study compared the effects of antihypertensive treatment with candesartan or losartan on cardiovascular disease (CVD) using Swedish ...
Gosse Philippe - - 2010
OBJECTIVES: To assess the consequences of malignant hypertension and its evolution with antihypertensive treatment. BACKGROUND: Malignant hypertension can be considered as a model of the effects of very high blood pressure and renin-angiotensin levels on target organs. However, the consequences on the heart have been little studied. METHODS: The consequences ...
Möller Reinhard - - 2010
The physiological reactions of the body in scuba diving situation can be simulated in a pressure chamber by increasing the ambient pressure. In this study the influence of a hyperbaric environment of 6 bar on the changes of the subcutaneous adipose tissue (SAT) thicknesses on different body sites in 68 ...
Lepor Herbert - - 2010
Relief of benign prostatic hyperplasia (BPH)-related lower urinary tract symptoms by α-blockers (α₁-adrenoceptor antagonists) is mediated primarily through the blockade of α(1A)-receptors, leading to relaxation of smooth muscle in the prostate and bladder neck. Early α-blockers that were nonselective for adrenoceptor subtypes have been associated with blood pressure-related adverse effects, ...
Quinkler Marcus - - 2010
The prevalence of primary hyperaldosteronism approaches 10% of all hypertensive patients, and besides efficient diagnostic procedures, effective treatment is of increasing importance to reverse increased morbidity and mortality. Aldosterone-producing adenoma and unilateral adrenal hyperplasia are amenable to cure by endoscopic adrenalectomy. Bilateral adrenal hyperplasia (micro- or macronodular), which comprises two-thirds of primary ...
Tasali Esra - - 2011
Women with polycystic ovary syndrome (PCOS) are insulin resistant and have a high risk of early-onset diabetes and cardiovascular disease. Obstructive sleep apnea (OSA) has adverse cardiometabolic consequences and is highly prevalent in women with PCOS. We sought to determine whether continuous positive airway pressure (CPAP) treatment of OSA has ...
Meehan Kelly - - 2010
Difluprednate ophthalmic emulsion 0.05% (Durezol™, Alcon, Fort Worth, Texas) is a topical difluorinated derivative of prednisolone with potent anti-inflammatory activity. Difluprednate 0.05% has a reported associated increase in intraocular pressure (IOP) in 3% of patients. Although the occurrence may be low, the possible elevation in IOP may be substantially higher ...
Hussain Mozammil - - 2010
Nerve fiber growth inside the degenerative intervertebral discs and facets is thought to be a source of pain, although there may be several other pathological and clinical reasons for the neck pain. It, however, remains difficult to decipher how much disc and facet joints contribute to overall degenerative segmental responses. ...
Stolwijk Niki M - - 2010
The popularity of long-distance walking (LDW) has increased in the last decades. However, the effects of LDW on plantar pressure distribution and foot complaints, in particular, after several days of walking, have not been studied. We obtained the plantar pressure data of 62 subjects who had no history of foot ...
Hu Yingying - - 2010
Mitral valve (MV) edge-to-edge repair (ETER) changes MV geometry by approximation of MV leaflets, and impacts left ventricle (LV) filling fluid mechanics. The purpose of this study was to investigate LV vortex with MV ETER during diastole. A computational MV-LV model was developed with MV ETER at the central free ...
Vanderveken Olivier M - - 2011
Epidemiological studies provide strong evidence that obstructive sleep apnea (OSA) is associated with cardiovascular complications such as systemic hypertension, congestive heart failure, and atrial fibrillation. Successful OSA treatment with continuous positive airway pressure (CPAP) has resulted in coincident reductions in systemic hypertension, improvements in left ventricular systolic function, and reductions ...
Natali A N - - 2010
The analysis of interaction phenomena occurring between the plantar region of the foot and insole was investigated using a combined experimental-numerical approach. Experimental data on the plantar pressure for treadmill walking of a subject were obtained using the Pedar(®) system. The plantar pressure resultant was monitored during walking and adopted ...
Ram C Venkata S - - 2010
Beta blockers have been used in the treatment of cardiovascular conditions for decades. Despite a long history and status as a guideline-recommended treatment option for hypertension, recent meta-analyses have brought into question whether β blockers are still an appropriate therapy given outcomes data from other antihypertensive drug classes. However, β ...
Gelbke Martin K - - 2010
To quantify patellofemoral contact pressures and forces during infrapatellar (IP) and suprapatellar (SP) intramedullary tibial nail insertion. Fresh-frozen hemicadavers with intact lower extremities and pelves were used for this study. A standard IP entry portal was used on nine tibiae, whereas an SP entry portal was used in eight tibiae. ...
Spooner Simon K - - 2010
Foot orthoses are believed to exert their therapeutic effect on the human locomotor apparatus by altering the location, magnitude, and temporal patterns of ground reaction forces acting on the plantar foot during weightbearing activities. In-shoe pressure-measurement systems are increasingly being used by clinicians and researchers to assess kinetic changes at ...
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