Search Results
Results 251 - 300 of 1919
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Cupo G - - 2012
Aims. To compare changes in vital signs and pain level experienced by patients during phacoemulsification and foldable intraocular lens (IOL) implantation using either topical/intracameral or peribulbar anesthesia. Materials and Methods. In this prospective, parallel-group clinical study 46 consecutive patients (mean age 72.9 +/- 8.1 years) undergoing cataract surgery were randomized ...
Naghshineh Mahsa - - 2013
The application of high hydrostatic pressure technology for enzymatic extraction of pectin was evaluated. Cellulase and xylanase under five different combinations (cellulase/xylanase: 50/0, 50/25, 50/50, 25/50, and 0/50U/g lime peel) at ambient pressure, 100 and 200MPa were used to extract pectin from dried lime peel. Extraction yield, galacturonic acid (GalA) ...
Jung Jeesun - - 2012
Two potassium (K) channel genes, Kcnk3 and Kcnk9, when deleted in mice, produced a model of hyperaldosteronism and hypertension. Our objective was to explore genetic variation [single-nucleotide polymorphisms (SNP)] in KCNK3 and KCNK9 in relation to blood pressure (BP) and aldosterone production in humans. Two groups of healthy European Americans ...
Manna Rudra Sekhar - - 2012
We report on the realization of a capacitive dilatometer, designed for high-resolution measurements of length changes of a material for temperatures 1.4 K ≤ T ≤ 300 K and hydrostatic pressure P ≤ 250 MPa. Helium ((4)He) is used as a pressure-transmitting medium, ensuring hydrostatic-pressure conditions. Special emphasis has been ...
Sangwan Manuvesh - - 2012
Reaction of methyl radicals with hydroxyl radicals, CH3 + OH  products (1) was studied using pulsed laser photolysis coupled to transient UV-vis absorption spectroscopy over the 294 - 714 K temperature and 1 - 100 bar pressure ranges (bath gas He). Methyl radicals were produced by photolysis of acetone ...
Tumanov Nikolay A - - 2012
The effect of pressure on DL-alanine has been studied by X-ray powder diffraction (up to 8.3 GPa), single-crystal X-ray diffraction and Raman spectroscopy (up to ∼ 6 GPa). No structural phase transitions have been observed. At ∼ 1.5-2 GPa, cell parameters b and c become accidentally equal to each other, but the space-group symmetry does ...
Rea Irene Maeve - - 2012
Mitochondria produce cellular energy but also free-radicals, which damage cells despite an array of endogenous anti-oxidants. In Northern Europe, the mitochondrial haplogroup J has been related to longevity in nonagenarians and centenarians but also with age-related disease. Hypertension is an important contributor to atherosclerotic-related diseases and its pathogenesis is associated ...
Toka Hakan R - - 2012
Advances in genetic mapping and sequencing techniques have led to substantial progress in the study of rare monogenic (Mendelian) forms of abnormal blood pressure. Many disease-defining pathways for hypertension have been identified in the past two decades. Perturbations in renal salt handling appear to be a common mechanism underlying these ...
Shah Masood Alam - - 2012
An accurate assessment of Intraocular pressure (IOP) is vital in establishing diagnosis of Glaucoma and decision making regarding various treatment modalities available. The purpose of this study is to compare Goldmann Applanation Tonometer (GAT) with Air puff tonometer. Cross-sectional comparative study conducted. 73 eyes from 73 patients were included in ...
Friedman Michael - - 2012
ObjectiveEvaluate the effects of continuous positive airway pressure (CPAP) on C-reactive protein (CRP) levels, reported either as a primary or secondary end point among patients with obstructive sleep apnea-hypopnea syndrome (OSAHS) based on a meta-analysis of published studies.Data SourcesEnglish-language searches of PubMed, Ovid, and the Cochrane databases were completed. Reference ...
Cabo Jorge - - 2012
Epidemiological and clinical studies suggest that consumption of omega (ω-3) polyunsaturated fatty acids (PUFA) contributes to the reduction of cardiovascular mortality through different mechanisms including modulation of cellular metabolic functions, gene expression and beneficial effects on lipid profile or blood pressure. The aim of the study is to review the ...
Ziyaeifard Mohsen - - 2012
The aim of this study was to evaluate intraocular pressure (IOP) and hemodynamic responses following insertion of laryngeal mask airway (LMA) or endotracheal tube (ETT) after anesthesia induction with propofol and remifentanil in cataract surgery. In a randomized controlled study, 50 adults scheduled for elective cataract extraction procedure under general ...
Ebeigbe J A - - 2012
Intraocular pressure (IOP) has been reported to be associated with systemic blood pressure (SBP) in population based studies. The aim of this study was to determine the relationship between IOP and arterial blood pressure in pregnant and menopausal Nigerian women. A longitudinal study of a hundred pregnant women aged 20 ...
Kollias Anastasios - - 2012
OBJECTIVE: The dynamic relationship between 24 h diastolic and systolic ambulatory blood pressure (BP) expressed by the ambulatory arterial stiffness index (AASI) has been introduced as a novel measure of arterial function, which independently predicts cardiovascular mortality. This article reviews the published evidence on the features and the clinical relevance of AASI. ...
Gray Mikel - - 2012
The voiding pressure flow study is the gold standard for evaluating micturition. Part 10 of the Traces series described techniques for evaluating micturition via the voiding pressure flow study; it focused on interpretation of results qualitatively via inspection and classification of flow pattern, detrusor contraction amplitude and duration, pelvic floor ...
Clotet Xavier - - 2012
We study the capillary rise of a viscous liquid in large Hele-Shaw models of disordered media, both analytically and experimentally. Compared to the Fries-Dreyer and Lucas-Washburn solutions for capillary rise with and without gravity, our experimental data reveal a systematic deviation at short and intermediate times. The original pressure balance ...
Anand Tanya - - 2012
BACKGROUND: Arginine vasopressin (AVP) is a key player in maintaining the intravascular volume and pressure during hemorrhagic shock. During the past 2 decades, animal studies, case reports, and reviews have documented the minimized blood loss and improved perfusion pressures in those receiving pressure support with AVP. MATERIALS AND METHODS: A ...
Scheibel Markus G - - 2012
The fixation with fixation: Microorganisms have converted atmospheric nitrogen into ammonia for millions of years under ambient conditions, whereas the Haber-Bosch process requires high pressures and temperatures. Some recent studies on the biological and synthetic generation of ammonia should contribute to a better understanding of the mechanism of this reaction, ...
Mantovani N P - - 2012
We studied the presence of primary resistance to raltegravir (RAL), natural polymorphisms, and selection pressure on HIV-1 integrase. We found a high frequency of integrase polymorphisms related to the resistance to RAL and sequence stability. Further studies are needed to determine the importance of these polymorphisms to RAL resistance.
James Jack E - - 2012
Considering the central role of the concept of blood pressure reactivity to explanations of the influence of life stress in the pathogenesis of cardiovascular disease, it is important that the underlying psychophysiological determinants of blood pressure change are elucidated. Empirical evidence is reviewed concerning the utility of the Hemodynamic Profile-Compensation ...
Gray Mikel - - 2012
Part 10 of the Traces series focuses on urodynamics evaluation of micturition via the voiding pressure-flow study (VPS). This article reviews techniques for generating a high-quality voiding pressure-flow study and initial interpretation of findings. Part 11 of the Traces series will focus on advanced analysis of the VPS using nomograms ...
Vaidya Abhinav A Nepal Hypertension Society, Kathmandu, - - 2012
The objective of the study was to examine if there has been any change in the prevalence of hypertension (HTN) in the Nepalese population in the last two and half decades. A population-based cross-sectional study was done in Bhadrabas village area of Kathmandu valley to estimate the prevalence of HTN ...
Rogenski Noemi Marisa Brunet NM Divisão de Enfermagem Cirúrgica, Hospital Universitário, Universidade de São Paulo, SP, Brazil. - - 2012
Even in the present, pressure ulcers still represent a severe health problem, particularly in Intensive Care Units (ICU). This study assesses the implementation of a protocol to prevent pressure ulcers in ICU inpatients. This prospective, descriptive and exploratory study verifies the incidence of pressure ulcers following the implementation of a ...
Susantitaphong Paweena - - 2012
Increased left ventricular (LV) mass is a risk factor for cardiovascular mortality in patients with chronic kidney failure. More frequent or extended hemodialysis (HD) has been hypothesized to have a beneficial effect on LV mass. Meta-analysis. MEDLINE literature search (inception to April 2011), Cochrane Central Register of Controlled Trials and ...
Mercadal Lucile - - 2012
Dialysate sodium prescription has major implications for hemodialysis tolerance but also for dialyzed patients' cardiovascular morbidity as a determinant factor of blood pressure. Biofeedback systems have been developed to drive dialysate conductivity in order to reach a prescribed serum sodium concentration, indirectly evaluated by a dialysate or an ultrafiltrate conductivity ...
Franks Amy M - - 2012
BACKGROUND:Cardiovascular events associated with energy drink consumption have been reported, but few data exist to delineate the hemodynamic effects of energy drinks.OBJECTIVE:To compare the effects of an energy drink versus caffeine supplementation on blood pressure (BP) indices as measured by 24-hour ambulatory BP monitoring (ABPM).METHODS:Healthy, nonsmoking, normotensive volunteers (aged 18-45 ...
Ebigwai Joseph Kayefor - - 2012
Aqueous crude cold-water extract from the fruiting body of the culinary-medicinal oyster mushroom Pleurotus ostreatus was assessed for activity against increased intra-ocular pressure (IOP) in mice. A 0.1% dexamethasone instillation was used to raise the intra-ocular pressure in the animals above the 21-mmHg threshold limit. The extract has intrinsic anti-hypertensive ...
Matsuda Yu - - 2012
We have proposed a novel concept of a pressure sensor called electroluminescent pressure sensor (ELPS) based on oxygen quenching of electroluminescence. The sensor was fabricated as an organic light-emitting device (OLED) with phosphorescent dyes whose phosphorescence can be quenched by oxygenmolecules, and with a polymer electrode which permeates oxygen molecules. ...
Nishiyama Masayoshi - - 2012
Hydrostatic pressure is one of the physical stimuli that characterize the environment of living matter. Many microorganisms thrive under high pressure and may even physically or geochemically require this extreme environmental condition. In contrast, application of pressure is detrimental to most life on Earth; especially to living organisms under ambient ...
Potop Vasile - - 2012
Glaucoma today has sophisticated means of diagnosis and a range of complex treatment modalities. Despite these recent acquisitions this disease continues to send to darkness in an annual pace, millions of individuals worldwide. Somewhere diagnosis and treatment is occurring delayed, or have lost their adequacy and their fine tuning. Finding ...
Augustinus C J - - 2012
This review article addresses the different aspects that influence the choice and sequence of surgical treatment in patients with coexisting open-angle glaucoma and cataract. The effect of phacoemulsification on the intraocular pressure (lOP) and on a preexisting bleb is discussed and phacotrabeculectomy and trabeculectomy are compared. Moreover, the most recent ...
Ciaccia Flavia Renata Dantas Alves Silva - - 2012
The objective of the present study is to propose a method to dynamically evaluate discomfort of a passenger seat by measuring the interface pressure between the occupant and the seat during the performance of the most common activities of a typical flight. This article reports the results of resting and ...
Wiener Thomas C - - 2012
Humans undergo several consistent and measurable changes of fluid distribution and regulation in the course of adapting to microgravity. Recently, a syndrome of objective findings has been described by Mader et al. associated with long-duration missions, including hyperopic shifts, mildly elevated intracranial pressure, papilledema, globe flattening, choroidal folds, and other ...
Crawley Laura - - 2012
Elevated IOP in clinical practice is usually seen in glaucoma or ocular hypertension. Glaucoma affects 60 million people worldwide and 8.4 million are bilaterally blind from this chronic disease.1 Options for reducing IOP rely on pharmacological agents, laser treatments and surgery which may be penetrating or non-penetrating. The last twenty ...
Shemesh Gabi - - 2012
Myopic photorefractive surgery induces a reduction in central corneal thickness, which may lead to underestimation of intraocular pressure. This retrospective clinical study compared intraocular pressure measurements obtained by Goldmann applanation tonometry (GAT) and dynamic contour tonometry (DCT-Pascal) in eyes undergoing myopic intralaser-assisted in situ keratomileusis (IntraLASIK) or laser-assisted subepithelial keratomileusis ...
Sarker Mohamed Zaidul Islam - - 2012
Fish oil was extracted from the viscera of African Catfish using supercritical carbon dioxide (SC-CO(2)). A Central Composite Design of Response Surface methodology (RSM) was employed to optimize the SC-CO(2) extraction parameters. The oil yield (Y) as response variable was executed against the four independent variables, namely pressure, temperature, flow ...
Karadag Remzi - - 2012
To investigate the effects of body mass index (BMI) on intraocular pressure (IOP) and ocular pulse amplitude (OPA). Totally 140 healthy individuals without any systemic diseases were included in the study. BMI (kg/m(2)) was calculated for every individual. IOP and OPA were measured with Pascal Dynamic contour tonometer (DCT). Blood ...
Kim Joon Mo - - 2012
Intraocular pressure (IOP) may vary according to the change of ocular conditions. In this study, we want to assess the effect and mechanism of pupil dilation on IOP in normal subjects. We prospectively evaluated 32 eyes of 32 patients (age; 61.7±8.2 years) with normal open angles under diurnal IOP. IOP was ...
Cheng Jin-Wei - - 2012
The first goal of medical therapy in glaucoma is to reduce intraocular pressure (IOP), and the fixed-combination medications are needed to achieve sufficiently low target IOP. The aim of this systematic review and meta-analysis is to evaluate IOP-lowering effect of the commonly used fixed-combination drugs containing 0.5% timolol. Pertinent publications ...
Samuels Brian C - - 2012
Intraocular pressure (IOP) fluctuation has recently been identified as a risk factor for glaucoma progression. Further, decreases in intracranial pressure (ICP), with postulated increases in the translaminar pressure gradient across the lamina cribrosa, has been reported in glaucoma patients. We hypothesized that circadian fluctuations in IOP and the translaminar pressure ...
Gao Feng - - 2012
Primary open-angle glaucoma (POAG) is one of the leading causes of blindness in the United States and worldwide. While lowering intraocular pressure (IOP) has been proven to be effective in delaying or preventing the onset of POAG in many large-scale prospective studies, one of the recent hot topics in ...
Heidary Roghayeh R Alborz University of Medical Sciences, Karaj, - - 2012
Tactile palpation is a simple technique that can prove useful for estimating intraocular pressure (IOP) in primary healthcare settings, mainly in the absence of equipment, for very young children, patients who are intellectually challenged, those with eyes with extremely irregular corneas, and patients with corneal prostheses. Accordingly, this technique can ...
Muhovic-Bejtic Jasna J Department of Ophthalmology, General Hospital Prim dr Abdulah Nakas Sarajevo Kranjceviceva 12, 71 000 Sarajevo Bosnia and Herzegovina. - - 2012
To establish the frequency increase of intraocular pressure (IOP) and endophthalmitis as well as other complications that may occur after intravitreal application of bevacizumab. The study included 45 patients and 75 eyes with exudative form of senile degeneration of macula lutea, who were treated in the General Hospital "Prim. Dr. ...
Januleviciene Ingrida I Department of Ophthalmology, Hospital of Lithuanian University of Health Sciences Kaunas Clinics, Eye Clinic of Kaunas University of Medicine, Eiveniu Str. 2, Kaunas 50009, Lithuania. - - 2012
To compare the effects of dorzolamide and timolol add-on therapy in open-angle glaucoma (OAG) patients previously treated with prostaglandin analogue (Pg), by evaluating fluctuations in the intraocular (IOP), blood (BP), ocular perfusion pressures (OPP) and retrobulbar blood flow (RBF) parameters. 35 OAG patients (35 eyes), 31 women (88.6%) age 63.3 ...
Alamiry Mohammed A H - - 2011
The target dye, which is a derivative of Merocyanine 540 bearing a naphthoxazole head group, persists as a monomer in ethanol solution but dimerizes in water under ambient conditions. Analysis of the absorption spectrum indicates that the dimer has an oblique geometry with the two molecules being held at an ...
Willeford Breanna - - 2012
Abstract Background: Orthostatic hypotension and cerebral autoregulation have been extensively studied in the rabbit. However, these physiologic responses have not been previously studied utilizing a rabbit in the sitting position under anesthesia. Methods: This unusual position was obtained as the preferred orientation based on geometry requirements of associated equipment for ...
Dimitriou Gabriel - - 2011
: To determine whether composite extubation indices can predict extubation outcome in preterm infants. : Prospective observational study. : Level III neonatal intensive care unit. : Fifty-six preterm infants cared for in the neonatal intensive care unit of a tertiary teaching hospital during 2007 and 2008. : None. : The ...
Dabney Michael J - - 2011
Important interfacial processes in disciplines ranging from medicine to the separations sciences occur over a wide range of pressures, temperatures, and time scales. In this paper we report a new high-pressure total internal reflection fluorescence (HP-TIRF) apparatus that allows rapid fluorescence measurements of sub-monolayers in contact with liquids and supercritical ...
Takenaka Joji - - 2011
Purpose: To investigate the influence of positional deviations on rebound tonometer measurement of intraocular pressure in humans. Materials and methods: Intraocular pressure was measured using the Icare rebound tonometer on the right eyes of 53 subjects in various conditions as follows: first, at a distance of 4, 6, or 8 mm ...
Klein Klaus Ulrich KU Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, Medical University Vienna, Vienna, Austria. - - 2011
A novel uncoated fluorescence quenching probe allows fast measurement of oxygen tension in vessels and tissue. The present study reports the first use of the technology for dual measurements of arterial (paO(2)) and brain tissue oxygen tension (ptiO(2)) during hypoxic challenge in a pig model. Eight pigs were anesthetized using ...
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