Search Results
Results 201 - 250 of 2583
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Huang S C - - 2012
BACKGROUND: Despite of stiffening change of conduit arteries, how total peripheral resistance (TPR) is adapted to chronic spinal cord injury (SCI) remains unclear. AIM: To investigate how chronic cervical SCI influences hemodynamic characteristics DESIGN: Cross-sectional, case-control study SETTING: Rehabilitation department in the tertiary medical center POPULATION: Twenty-one male patients with ...
Myers Martin G - - 2012
OBJECTIVES:: To determine the prevalence of masked hypertension [normal office blood pressure (BP) with high awake ambulatory BP] using automated office BP (AOBP) or conventional manual office BP (MOBP) measurement in routine clinical practice. METHODS:: The prevalence of masked hypertension was evaluated on three consecutive visits during a median 6 ...
Aekplakorn Wichai - - 2012
OBJECTIVE:: To determine the changes in prevalence, awareness, treatment and control of hypertension and their metabolic risk factors in Thai population between 2004 and 2009. METHODS:: The Thai National Health Examination Survey (NHES) in 2004 and 2009 data were used. Blood pressure and anthropometric measurements were performed. Prevalence, awareness, treatment ...
Burns Joanna - - 2012
OBJECTIVES:: Neuroendocrine activation may be an important adjunctive mechanism for left ventricular hypertrophy (LVH) development. Controversy exists to as to whether LVH regression occurs due to blood pressure (BP) reduction alone or if adjunctive mechanisms play a role. We planned to test the hypothesis that for a similar BP reduction, ...
Chiu Min-Chi - - 2012
The COP progression is the trajectory of the center of foot pressure. Thirty healthy young adults were recruited to participate in this study. All subjects were asked to walk randomly at four different speeds (3km/h, preferred walking speed, 4km/h and 5km/h). A foot pressure measurement system (RS-scan(®) system) was used ...
Kanikowska Dominika - - 2012
The effects of environmental temperature on blood pressure and hormones in obese subjects in Japan were compared in two seasons: summer vs winter. Five obese (BMI, 32 ± 5 kg/m(2)) and five non-obese (BMI, 23 ±3 kg/m(2)) men participated in this experiment at latitude 35°10' N and longitude 136°57.9' E. The average environmental temperature ...
Nogami Yoshie - - 2012
AIMS: Recently developed vector flow mapping (VFM) enables evaluation of local flow dynamics without angle dependency. This study used VFM to evaluate quantitatively the index of intraventricular haemodynamic kinetic energy in patients with left ventricular (LV) diastolic dysfunction and to compare those with normal subjects. METHODS AND RESULTS: We studied ...
Tzeng Yu-Chieh - - 2012
We assessed the convergent validity of commonly-applied metrics of cerebral autoregulation (CA) to determine the extent to which the metrics can be used interchangeably. To examine between-subject relationships between low (LF, 0.07- 0.2 Hz) and very low (VLF, 0.02-0.07 Hz) frequency transfer function coherence, phase, gain, and normalized gain, we ...
de Alba María - - 2012
The effect of high pressure (HP) on Salmonella enterica subsp. enterica serovar Enteritidis in beef carpaccio stored under temperature abuse conditions (8°C) during 30days was investigated. After treatment, reductions of S. Enteritidis were 3.68 and 5.94 log cfu/g in samples pressurized at 450MPa for 5 and 10min, respectively, whereas the ...
Uetani Eri - - 2012
OBJECTIVE: Increased blood pressure (BP) variability is suggested to be a risk factor for cardiovascular disease. Although a postprandial decline in BP is a frequently observed phenomenon in the elderly, little attention has been paid to the clinical and diagnostic significance of postprandial BP change. Here, we aimed to clarify ...
Stamatelopoulos Kimon S - - 2012
OBJECTIVE: We tested the hypotheses that monthly fluctuations in markers of arterial stiffness and blood pressure hemodynamics differ between women with and without premenstrual syndrome. We also assessed hypertension prevalence and arterial stiffening in postmenopausal women with or without history of premenstrual symptoms. METHODS: Twenty one pre-menopausal women with premenstrual ...
Movileanu Codina - - 2012
Explosions of gaseous ethylene-air mixtures with various concentrations between 3.0 and 14.0vol.% and initial pressures between 0.20 and 1.10bar were experimentally investigated at ambient initial temperature, using several elongated cylindrical vessels with length to diameter ratio between 1.0 and 2.4. The maximum explosion pressures p(max), the explosion times θ(max), the ...
Bastos-Barbosa Rachel Gabriel - - 2012
BackgroundFew studies have evaluated blood pressure (BP) and cardiovascular risk in older persons with frailty syndrome. The objective of the present study was to assess the cardiovascular risk factors of subjects with frailty syndrome with emphasis on BP, as compared with individuals without frailty or with prefrailty.MethodsThis was a cross-sectional ...
Chrysohoou Christina - - 2012
The aim of this study was to evaluate the relation between aortic artery distensibility, expressed by pulse pressure (PP) and autonomic nervous system function expressed by heart rate variability (HRV), among elders. During 2009, 469 individuals (50 % males, mean age 75 ± 6 years old), permanent inhabitants of Ikaria ...
Yoeruek Efdal - - 2012
PURPOSE:: To describe a new technique for unfolding of the Descemet membrane (DM) during Descemet membrane endothelial keratoplasty. METHODS:: DM and endothelium were stripped from donor corneas submerged in corneal storage solution. Donor DM diameters were 8.5 mm. The central 8 mm of DM was stripped from the recipient cornea. ...
Falkner Bonita B Department of Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA. - - 2013
To examine the relative effects of high blood pressure (HBP) and obesity on left ventricular mass (LVM) among African-American adolescents; and if metabolic or inflammatory factors contribute to LVM. Using a 2 × 2 design, African-American adolescents were stratified by body mass index percentile (body mass index <95th percentile = ...
De Gottardi Andrea - - 2012
BACKGROUND: In cirrhosis, hepatic endothelial dysfunction as a result of oxidative stress contributes to the postprandial increase in hepatic venous pressure gradient (HVPG). OBJECTIVE: We aimed at testing the hypothesis that dark chocolate, which holds potent antioxidant properties, might attenuate the postprandial increase in HVPG in patients with cirrhosis. DESIGN: ...
Mastropietro Christopher W - - 2012
OBJECTIVE: To describe the haemodynamic response of children who receive arginine vasopressin for haemodynamic instability after cardiac surgery and to identify clinical variables associated with a favourable response. Materials and Methods We reviewed patients less than or equal to 6 years undergoing open heart surgery in our institution between January, ...
Baumbach R E - - 2012
The temperature (T)-pressure (P) phase diagrams are reported for the tetragonal layered compounds CeRu(2)Al(2)B, CeRu(2)Ga(2)B, and CeRu(2)Ga(2)C, studied by magnetization, specific heat and electrical resistivity. These systems exhibit localized 4f magnetic ordering with ferromagnetic ground states at T(C) = 12.8 K, 16.3 K, and 17.2 K, respectively. Chemical and applied pressure both increase T(C) in ...
Kool Nathalie P - - 2012
Artifacts in anesthesia information management system (AIMS) databases may influence research results. Filtering during data capturing can prevent artifacts from being stored. In this prospective study, we assessed the reliability of AIMS data by determining the incidence of artifactual values stored in the AIMS. Vital parameter values regarding 86 surgical ...
González-Cebrino Francisco - - 2012
The application of hydrostatic high pressure on a "Songold" plum purée was assessed in comparison with heat pasteurization. To simulate industrial conditions, one-half of the total purée was manufactured with a pretreatment of thermal blanching (TB) and the other half without it (nonthermally blanched, NTB). Changes after thermal treatment and ...
Belva F - - 2012
Do young adolescents conceived by ICSI display a higher blood pressure than spontaneously conceived (SC) adolescents? In our study, 14-year-old male and female ICSI teenagers were not found to have increased blood pressure at rest. Only limited data are available regarding the cardiovascular risk of children born after assisted conception ...
Vizzardi Enrico - - 2012
BACKGROUND: The aim of this study was to investigate the effects of transcatheter aortic valve implantation (TAVI) on left ventricular (LV) hypertrophy and diastolic function in patients with severe aortic valve stenosis (AVS). There are few and conflicting data on LV mass remodeling and LV diastolic function after TAVI. METHODS: ...
Apitz Christian - - 2012
OBJECTIVES: Chronic right ventricular (RV) pressure overload results in pathologic RV hypertrophy and diminished RV function. Although aortic constriction has been shown to improve systolic function in acute RV failure, its effect on RV responses to chronic pressure overload is unknown. METHODS: Adjustable vascular banding devices were placed on the ...
To W J - - 2012
Hypertension is asymptomatic until late stages of pathogenesis, rendering an effective means of detection for early diagnosis essential. The current method of diagnosing hypertension requires two or more sphygmomanometric readings over two or more office visits, which potentially hinders early detection. Though retinopathy is an indicator of vascular damage, it ...
Buckley Gareth J - - 2012
OBJECTIVE: To investigate the hemodynamic effects following the use of an impedance threshold device (ITD) in a canine model of cardiopulmonary arrest. DESIGN: Experimental, randomized crossover study. SETTING: Cardiovascular research laboratory at a university veterinary center. ANIMALS: Eight purpose bred beagle dogs. INTERVENTIONS: Dogs were anesthetized and instrumented for the ...
Ozkan Gulsum - - 2012
Hypertension is associated with fibrinolysis abnormality. Thrombin-activatable fibrinolysis inhibitor (TAFI) is a novel molecule-linking coagulation and fibrinolysis. The aim of this study was to investigate the levels of TAFI in primary hypertensive patients and to compare the effects of amlodipine and ramipril on TAFI levels. The study was performed with ...
Dimeo Fernando - - 2012
Regular physical exercise is broadly recommended by current European and American hypertension guidelines. It remains elusive, however, whether exercise leads to a reduction of blood pressure in resistant hypertension as well. The present randomized controlled trial examines the cardiovascular effects of aerobic exercise on resistant hypertension. Resistant hypertension was defined ...
Johnson D M - - 2012
INTRODUCTION: Evaluation of drug-related effects on cardiovascular function is part of the core battery described in the ICH S7A guideline. Anaesthetized guinea-pigs are an excellent model for the evaluation of drug-induced prolongation of ventricular repolarization; however less information is available regarding other cardio-haemodynamic parameters in this model. The current study ...
Singleton Thomas A - - 2012
The photo-induced isomerisation and thermal back relaxation of an azobenzene-functionalized polymer poly(disperse red 1 acrylate) were investigated at increasing external pressures up to 1.5 GPa inside a diamond-anvil spectroscopic cell. The thermal cis-trans isomerisation was monitored by laser pump-probe spectroscopy, which demonstrated an increase in the half-life of the isomerisation ...
Wu Shouling - - 2012
OBJECTIVES: This study aimed to determine the occurrence of cardiovascular (CV) events in a prehypertensive Chinese population. METHODS: Participants meeting the JNC 7 diagnostic criteria for prehypertension (n=30,027) and ideal blood pressure (n=15,614) were enrolled in this prospective, observational cohort. New CV events were collected during follow-up of 38-53months (mean ...
Mick Eric E Department of Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, MA, USA. - - 2013
Compared to children, adults with ADHD are at greater risk for developing adverse cardiovascular related outcomes and, if treated, may be likely to carry a greater burden of exposure to stimulant medications. The goal of this report is to critically review the available literature relevant to the cardiovascular safety of ...
Zepeda Ramiro J - - 2012
Oxidative stress and endothelial dysfunction have been associated with essential hypertension (EH) mechanisms. The purpose of this study was to evaluate the effect of carvedilol and nebivolol on the oxidative stress-related parameters and endothelial function in patients with EH. The studied population included 57 patients, either sex, between 30 and ...
Clayton H M - - 2012
The objectives of this study were to measure forces and pressure profiles when riding with a conventional saddle compared to bareback riding. An electronic pressure mat was used to compare contact area, mean total force and pressure variables for one rider riding seven horses at sitting trot with a conventional ...
Bor-Seng-Shu Edson - - 2012
Object In recent years, the role of decompressive craniectomy for the treatment of traumatic brain injury (TBI) in patients with refractory intracranial hypertension has been the subject of several studies. The purpose of this review was to evaluate the contribution of decompressive craniectomy in reducing intracranial pressure (ICP) and increasing ...
Russold Elena - - 2012
Objective  To compare tidal volume estimations obtained from Respiratory Ultrasonic Plethysmography (RUP) with simultaneous spirometric measurements in anaesthetized, mechanically ventilated horses. Study design  Prospective randomized experimental study. Animals  Five experimental horses. Methods  Five horses were anaesthetized twice (1 week apart) in random order in lateral and in dorsal recumbency. Nine ventilation ...
Gassara Fatma - - 2012
Lignin quantification in apple pomace residues was carried out using a microwave oven to replace traditional refluxing during the mild acidolysis step to augment the selectivity of this step towards cleavage of lignin-carbohydrate bonds and to reduce the time needed to quantify lignin. The pressure, temperature and time were optimized ...
Dragoumanos Vasileios - - 2012
OBJECTIVE: The objective was to evaluate whether passive leg raising during cardiopulmonary resuscitation in a porcine model of prolonged ventricular fibrillation improves hemodynamics, return of spontaneous circulation, 24-hour survival, and neurological outcome. METHODS: Ventricular fibrillation was induced in 20 healthy Landrace/Large White piglets, which were subsequently left untreated for 8 ...
Vernay Michel - - 2012
OBJECTIVE:: Dietary recommendations to reduce blood pressure (BP) have been widely disseminated. We investigated associations between dietary intake and BP in a national sample of adults living in France. METHODS:: The survey included 1968 18-74-year-old participants in the French Nutrition and Health Survey (Etude Nationale Nutrition Santé), a cross-sectional national ...
Jeppesen Jørgen L - - 2012
BackgroundIn a large collaborative study (n > 50,000), common variants in the natriuretic peptide (NP) genes were found to be associated with circulating NP levels and also with blood pressure (BP) levels based on office BP measurements (OBPMs). It is unknown if determining an individual's BP by 24-h ambulatory BP ...
Shukla Akash - - 2012
Transient lower esophageal sphincter relaxation (tLESR) and decreased basal lower esophageal sphincter (LES) pressure are postulated mechanisms of gastroesophageal reflux (GER). There is conflicting evidence on the effect of carbonated drinks on lower esophageal sphincter function. This study was conducted to assess the effect of a carbonated beverage on tLESR ...
Delerme Samuel - - 2012
BACKGROUND: Transcutaneous carbon dioxide pressure (PtcCO(2)) has been suggested as a noninvasive surrogate of arterial carbon dioxide pressure (PaCO(2)). Our study evaluates the reliability of this method in spontaneously breathing patients in an emergency department. PATIENTS AND METHODS: A prospective, observational study was performed in nonintubated dyspneic patients who required ...
Lin Aaron C W - - 2012
BACKGROUND:: Central arterial pressure is a better predictor of adverse cardiovascular outcomes than brachial blood pressure, but noninvasive measurement by applanation tonometry is technically demanding. METHOD:: Pulsecor R6.5 is a novel device adapted from a standard sphygmomanometer which estimates the central aortic pressure from analysis of low-frequency suprasystolic waveforms at ...
Rodrigues Sergio L - - 2012
BackgroundObesity has been described as a predictor of cardiovascular mortality, and some studies have reported an association with obesity and increased aortic stiffness. Other studies have not identified obesity to be an independent risk factor. Therefore, the purpose of our study was to determine the association between aortic stiffness and ...
Bosker Fokko J - - 2012
Genetic and environmental contributions to urinary excretion rates of norepinephrine (U(NE)V) and epinephrine (U(E)V) and their association with blood pressure (BP) were investigated in 91 African American (mean age, 17.3±2.6 years) and 101 European American (mean age, 18.7±3.4 years) mono- and di-zygotic twins. Genetic modeling was performed using Mx software. ...
Ilies C - - 2012
BACKGROUND: /st>The intensified use of spinal anaesthesia (SPA) for Caesarean section significantly contributed to a decreased maternal mortality and morbidity. Nevertheless, one of the major side-effects is hypotension after SPA with potential negative effects on the fetus. Owing to discontinuous oscillometric measurements (non-invasive arterial pressure, NIAP), hypotensive episodes may be ...
Iwamoto Yumiko - - 2012
OBJECTIVE: Cardiovascular diseases are associated with impaired flow-mediated vasodilation (FMD) and increase in carotid intima-media thickness (IMT). Both FMD and IMT are independent predictors for cardiovascular outcomes. When measuring FMD and nitroglycerine-induced vasodilation in the brachial artery, IMT can also be simultaneously assessed in the same brachial artery. The purpose ...
McBride William T - - 2012
OBJECTIVE: Negative-pressure ventilation (NPV) by external cuirass (RTX; Deminax Medical Instruments Limited, London, UK) in intubated patients after cardiac surgery improves hemodynamics measured by pulmonary artery catheter (PAC)-based methods with increased cardiac output (CO) and stroke volume (SV) without changing the heart rate (HR). The less-invasive pressure recording analytical method ...
Ulusoy Sukru - - 2012
In addition to high blood pressure (BP), BP variability has recently also been shown to increase cardiovascular events. The purpose of this study was to compare the effect of a fixed-dose combinations (FDCs) of valsartan/amlodipine and a valsartan- and amlodipine-free drug combination on 24-h BPV. A total of 85 patients ...
Bayarjargal Lkhamsuren - - 2012
The high-pressure behavior of KIO(3) was studied up to 30 GPa using single crystal and powder x-ray diffraction, Raman spectroscopy, second harmonic generation (SHG) experiments and density functional theory (DFT)-based calculations. Triclinic KIO(3) shows two pressure-induced structural phase transitions at 7 GPa and at 14 GPa. Single crystal x-ray diffraction at 8.7(1) GPa was ...
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