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Johnson Alexander A Critical Care, Central DuPage Hospital, Cadence Health, 25 North Winfield Road, Winfield, IL 60190, USA. Electronic address: - - 2014
The lack of randomized controlled trials suggesting improved outcomes with pulmonary artery catheter use and pressure-based hemodynamic monitoring has led to a decrease in pulmonary artery catheter use. However, an increasing amount of literature supporting stroke volume optimization (SVO) has caused a paradigm shift from pressure-based to flow-based techniques. This ...
Baumgartner Jill J Institute for Health and Social Policy and Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada H3A 1A3; Institute on the Environment, University of Minnesota, St. Paul, MN 55108; - - 2014
Air pollution in China and other parts of Asia poses large health risks and is an important contributor to global climate change. Almost half of Chinese homes use biomass and coal fuels for cooking and heating. China's economic growth and infrastructure development has led to increased emissions from coal-fired power ...
Kong Chang Yi CY Department of Applied Chemistry and Biochemical Engineering, Graduate School of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8561, Japan; Research Institute of Green Science and Technology, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8561, Japan. Electronic address: - - 2014
The effects of temperature and density on retention of platinum(II) 2,4-pentanedionate in supercritical fluid chromatography were investigated at temperatures of 308.15-343.15K and pressure range from 8 to 40MPa by the chromatographic impulse response method with curve fitting. The retention factors were utilized to derive the infinite dilution partial molar volumes ...
Bronzo Ana Lúcia Aparecida - - 2012
BACKGROUND: Felypressin has been added to local anesthetic to increase the length of the anesthetic effect and reduce toxicity during dental procedures. However, the effect on blood pressure remains uncertain, and this may be highly relevant in the dental treatment of hypertensive patients. OBJECTIVE: To investigate the effect of felypressin ...
Chung Sheng-Chia - - 2012
Abstract Objective: The present study investigates the effect of Sahaja yoga meditation on quality of life, anxiety, and blood pressure control. Design: The prospective observational cohort study enrolled two study groups: those receiving treatment from the International Sahaja Yoga Research and Health Center (meditation group) and those receiving treatment from ...
Kayano Hiroyuki - - 2012
Background: Nocturnal and early morning hypertension are both significant risk factors for cardiovascular events. It remains unclear whether anxiety disorder affects nocturnal blood pressure (BP), early morning BP, or BP pattern in hypertensive patients. Methods and Results: One hundred and twenty consecutive hypertensive outpatients (77 men and 43 women; mean ...
Ettner Randi - - 2012
Literature supporting a relationship between emotions and regulation of blood pressure dates back to the early 1900s. Theoretical explanations of the pathophysiology of the correlation have centered on several possible trajectories, the most likely being cardiovascular reactivity to stress. Prospective studies have demonstrated that chronic stress and enduring traits such ...
Nguyen John S - - 2010
There are few data on the impact of left ventricular (LV) filling pressure on systolic and diastolic myocardial mechanics in patients with cardiac disease and preserved LV ejection fraction (LVEF) (≥ 50%). Patients referred for cardiac catheterization underwent comprehensive echocardiography within 20 minutes of catheterization. Strain and strain rate in ...
Chung Chang-Min - - 2010
The association between the arterial stiffness and the severity of left ventricular (LV) diastolic function in hypertension has not been fully evaluated. This study was conducted to evaluate the relationship of aortic stiffness by brachial-ankle pulse wave velocity (baPWV) to parameters reflecting the atherosclerosis and the severity of LV diastolic ...
Hart E C - - 2010
Alterations in the carotid baroreflex (CBR) control of arterial pressure may explain the reduction in arterial pressure and left ventricular (LV) function after prolonged exercise. We examined the CBR control of heart rate (HR) and mean arterial pressure (MAP), in addition to changes in LV function, pre- to post-exercise. Seven ...
Shanks Miriam - - 2010
This study sought to examine the changes in diastolic dyssynchrony with cardiac resynchronization therapy (CRT). Little is known about the effect of CRT on diastolic dyssynchrony. Consecutive heart failure patients (n = 266, age 65.7 ± 10.0 years) underwent color-coded tissue Doppler imaging at baseline, 48 h, and 6 months ...
Saltijeral Adriana - - 2010
High blood pressure increases left ventricular (LV) after-load. Furthermore, LV response to that high blood pressure varies among different subjects. Nevertheless, myocardial deformation behavior in these different adaptative responses has not been analyzed until now. Prospective study in which 66 consecutive hypertensive patients were enrolled in between May and August ...
Kajimoto Katsuya - - 2010
Negative inotropic agents are often administered to decrease the left ventricular (LV) pressure gradient in patients with obstructive hypertrophic cardiomyopathy (HC). Little information is available regarding comparisons of the effects on LV pressure gradient among negative inotropic agents. The present study compared the decrease in the LV pressure gradient at ...
Fukuta Hidekatsu - - 2011
Although mildly reduced renal function is associated with increased risk for heart failure in patients with coronary artery disease (CAD), mechanisms underlying the association remain unclear. We tested the hypothesis that abnormal ventricular-arterial interaction may occur in mildly reduced renal function. We examined the relationships of the estimated glomerular filtration ...
Wansapura Arshani N - - 2011
The Na,K-ATPase is a ubiquitous transmembrane pump and a specific receptor for cardiac glycosides such as ouabain and digoxin, which are used in the management of congestive heart failure (CHF). A potential role for these so-called endogenous cardiotonic steroids (CS) has been explored, and it has become apparent that such ...
Chen Ling - - 2010
Chronic intermittent hypoxia (CIH) and cardiovascular dysfunction occur in patients with obstructive sleep apnea. We hypothesized that the Na(+)/Ca(2+) exchanger-1 (NCX1) mediates, at least partially, left ventricular (LV) dysfunction in CIH. Four groups of mice (N = 15-17 per group), either cardiac-specific NCX1 knockouts (KO) or wild types (WT), were ...
Selvaraj Raja J - - 2011
In patients with severe left ventricular (LV) dysfunction, visible pulsus alternans coincides with visible T-wave alternans (TWA), but a similar relationship has not been described for nonvisible microscopic systolic pressure alternans (MSPA) and microvolt TWA (MTWA). The purpose of this study was to determine the prevalence of MSPA and its ...
Hsu Po-Chao - - 2010
Previous studies which included patients with preserved left ventricular (LV) systolic function demonstrated that arterial stiffness progressively increased as LV diastolic function decreased. However, it was unknown whether this correlation was still present in a heterogeneous study population involving patients with a wide range of LV systolic function. Seventy-five patients ...
Sharma Anu - - 2011
The present study was designed to evaluate the effect of Lipotab, a polyherbal formulation on isoprenaline (ISO)-induced left ventricular (LV) remodeling and heart failure (HF). HF in Wistar albino rats was produced by two consecutive injections of ISO (150 mg/kg, s.c.) at an interval of 24 h. After 15 days ...
D'Andrea Antonello - - 2011
Although the physiologic range of pulmonary artery systolic pressure (PASP) has been reported, data on how it is manifested in athletes are limited. The aim of the present study was to explore the full spectrum of PASP and the long-term training impact in a large population of highly trained athletes. ...
Rothermund Lars - - 2011
BackgroundLow nephron number is a recently identified cause of arterial hypertension. We set out to test the effect of nephron number dosing on blood pressure and cardiorenal damage including left ventricular (LV) remodeling and function. Because exact determination of nephron number in vivo is currently not possible, we combined the ...
Pyles Lee A - - 2010
Extracorporeal membrane oxygenation (ECMO) is routinely used to support cardiopulmonary failure in infants and children. Suboptimal outcomes for primary cardiac support suggest a need for investigation of the impact of ECMO on the heart. Twenty-four newborn lambs received a brief period of ECMO support to investigate the hypothesis that ECMO ...
Weiner Rory B - - 2010
left ventricular (LV) rotation results from contraction of obliquely oriented myocardial fibers. The net difference between systolic apical counterclockwise rotation and basal clockwise rotation is left ventricular torsion (LVT). Although LVT is altered in various cardiac diseases, determinants of LVT are incompletely understood. LV end-diastolic volume, LV apical and basal ...
Galderisi Maurizio - - 2010
The aim of this study was to compare speckle-tracking echocardiography-derived left ventricular (LV) systolic mechanics and their relationships with LV diastolic properties in young patients with hypertension and in young competitive athletes in relation to their respective alterations of LV structure. Nineteen sedentary controls, 22 top-level rowers, and 18 young ...
MornoĊŸ Cristian - - 2010
The early diastolic transmitral velocity/early mitral annular diastolic velocity ratio (E/Ea) reflects left ventricular (LV) filling pressure in a variety of cardiac diseases. The value of this parameter in patients with significant mitral regurgitation (MR) remains controversial. It has been hypothesized that, by combining the index of diastolic function (E/Ea) ...
Kim Yoo Ri - - 2010
Anemia is associated with worse long term outcomes in heart failure. However, there is little evidence on the effect of low hemoglobin level to the left ventricular (LV) structure and diastolic function in hypertensive patients. This study assessed the relationship of hemoglobin level to LV filling pressure in elderly hypertensive ...
Dokainish Hisham H Department of Medicine, Section of Cardiology, Baylor College of Medicine, Houston, TX, USA. - - 2010
There are few data on echocardiographic indexes incorporating peak mitral inflow velocity (E), left atrial volume index (LAVi), and pulmonary artery pressure (PAP) for estimation of left ventricular (LV) filling pressure in patients with preserved LV ejection fraction (EF ≥ 50%). Patients underwent echocardiography ≤20 minutes of cardiac catheterization. Echocardiographic ...
Damy Thibaud - - 2010
The epidemiology of pulmonary arterial hypertension (PAH) in patients with heart failure (HF) is poorly described. Our aim was to investigate the determinants and prognostic significance of PAH in a large representative outpatient population with HF. Routine measurement of right ventricular tricuspid pressure gradient (RVTG) was attempted among unselected, consecutive ...
Meluzin Jaroslav - - 2011
the ratio of early diastolic transmitral flow velocity (E) to early diastolic mitral annular velocity (E(a)) is frequently used to predict an increase in left ventricular filling pressure (LVFP). However, this approach has several limitations. The aim of this study was to test whether additional information is gained by new ...
Cuspidi Cesare - - 2010
Impaired left ventricular (LV) mechanics in human hypertension are strongly related to LV hypertrophy (LVH). In the present study, we investigated the relationship between LV mid-wall fractional shortening (MWS) and biventricular hypertrophy in uncomplicated essential hypertensives. A total of 328 hypertensive patients categorized in tertiles of MWS were considered for ...
Acikel Mahmut - - 2010
Pulmonary hypertension (PH) caused by chronic obstructive lung disease (COLD) essentially involves the right heart. Also left ventricular (LV) systolic and diastolic functions may be affected. The aim of this study was to investigate the effect of on LV diastolic function in patients with COLD. A total of 47 patients ...
Matos-Souza J R - - 2011
This is cross-sectional study. The aim of this study is to investigate the cardiac structure and function of subjects with spinal cord injury (SCI) and the impact of metabolic, hemodynamic and inflammatory factors on these parameters. São Paulo, Brazil. Sixty-five nondiabetic, nonhypertensive, sedentary, nonsmoker men (34 with SCI and 31 ...
Cheng Susan S The Framingham Heart Study, Framingham, MA 01702-5803, - - 2010
The heart progressively remodels over the life course, yet longitudinal data characterizing such remodeling in the community are limited. Using multilevel modeling, we analyzed up to 4 serial echocardiographic observations obtained over a 16-year period in 4062 Framingham Heart Study participants (mean age 45 years, 54% women; 11 485 person-observations). ...
Tarumi Toshiaki - - 2010
Myocardial ischaemia and angina have been demonstrated in patients with hypertrophic cardiomyopathy (HCM). We hypothesized that left ventricular (LV) systolic or diastolic dysfunction would be provocated by pacing tachycardia in patients with HCM. We investigated LV global and regional systolic and diastolic function in 17 patients with HCM without LV ...
Xing Shan-Shan - - 2010
Inflammation plays an important role in the pathophysiology of the metabolic syndrome (MS). We determined whether the overexpression of interleukin (IL)-18 could aggravate left ventricular (LV) remodeling and diastolic dysfunction in fructose-fed rats (FFRs). To create an animal model for MS, male Wistar rats received 10% fructose in water for ...
Nishizawa Takao - - 2010
The beneficial cardiac effects of some Ca(2+) channel blockers have been attributed to blood pressure reduction, but these pleiotropic effects require further investigation. We compared the effects of benidipine, which has beneficial cardiac effects, and nitrendipine, which does not, in an animal model of hypertensive diastolic heart failure (DHF). Male ...
Saraiva Roberto M - - 2010
Pulmonary artery hypertension (PAH) increases mortality in patients with severe aortic stenosis. We hypothesized that left atrial (LA) dysfunction would be related to PAH in patients with severe aortic stenosis complicated by left ventricular (LV) systolic dysfunction. The data from 70 patients with severe aortic stenosis and LV systolic dysfunction ...
Guellich Aziz - - 2010
Adenylyl cyclase (AC) type 5 (AC5) and AC type 6 (AC6) are the two major AC isoforms in the heart. Cardiac overexpression of AC6 has been shown to be protective in response to several interventions. In this investigation, we examined the effects of chronic pressure overload in AC6 transgenic (TG) ...
Heffernan Kevin S - - 2010
Although typically derived from the contour of arterial pressure waveform, augmentation index (AIx) may also be derived from the digital pulse volume waveform using finger plethysmography (peripheral arterial tonometry, PAT). Little is known regarding the physiologic correlates of AIx derived from PAT. In this study, we investigated the relation of ...
Dokainish Hisham - - 2010
Background: There are few data on echocardiographic indexes incorporating peak mitral inflow velocity (E), left atrial volume index (LAVi), and pulmonary artery pressure (PAP) for estimation of left ventricular (LV) filling pressure in patients with preserved LV ejection fraction (EF >/= 50%). Methods: Patients underwent echocardiography </=20 minutes of cardiac ...
Cuspidi Cesare - - 2010
BACKGROUND AND AIM: Limited information is available on the association between left ventricular (LV) geometric patterns defined according to updated criteria and blood pressure (BP) levels and extra-cardiac organ damage (OD) in human hypertension. Thus, in untreated essential hypertensives we assessed the relationship between LV geometry, ambulatory BP and markers ...
Wachtell Kristian - - 2010
OBJECTIVE: It is unclear whether improvement of left atrial (LA) and ventricular (LV) structure results in reduction in new-onset atrial fibrillation (AF). The aim of the present study was to examine whether changes in-treatment LA diameter were related to changes in risk of new-onset AF. METHODS: We followed 939 hypertensive ...
Collins Sean P - - 2010
The authors previously described an acoustic cardiographic model that predicted echocardiographic correlates of elevated left ventricular (LV) filling pressure. This study evaluated this bedside acoustic cardiographic model against invasive measurements of LV filling pressure. Data were prospectively obtained from 68 adults referred for right heart catheterisation. Acoustic cardiographic measurements were ...
Subherwal Sumeet - - 2010
Studies investigating the association between central aortic pressures and diastolic function have been limited. Consecutive ambulatory patients (n = 281, mean age 49 +/- 13 years, 49% male) with normal left ventricular (LV) systolic function were included. The LV filling pressure (E/Em) was estimated by Doppler-derived ratio of mitral inflow ...
Nakamura Nobuo - - 2011
Electrocardiographic strain pattern (ECGS) is a well-recognized marker of the presence and severity of anatomic left ventricular hypertrophy (LVH) and also has been associated with adverse prognosis in hypertensive patients. Left ventricular (LV) endomyocardial radial strain (Endo-RS) is predominant in systolic LV wall thickening compared with epimyocardial radial strain (Epi-RS) ...
Liang Kimberly P - - 2010
To compare the prevalence of left ventricular (LV) diastolic dysfunction in subjects with and without rheumatoid arthritis (RA), among those with no history of heart failure (HF), and to determine risk factors for diastolic dysfunction in RA. A cross-sectional, community-based study comparing cohorts of adults with and without RA and ...
Park Sung-Ji - - 2010
Left ventricular torsion (LVtor) measures the rotational deformation of the myocardium and plays an important role in LV contraction and filling. Two-dimensional (2D) speckle tracking echocardiography (STE) has been validated as a reproducible non-invasive technique to assess LVtor. LVtor is altered in many disease states, but the effects of loading ...
Sarkar Subhendu - - 2010
This prospective randomized study aims to evaluate and compare the effects of isoflurane, sevoflurane and desflurane (study drugs) on left ventricular (LV) diastolic function in patients with impaired LV relaxation due to ischemic heart disease using transesophageal Doppler echocardiography. After approval of the local ethics committee and informed consent, 45 ...
Cioffi Giovanni - - 2010
BACKGROUND: Obstructive sleep apnea (OSA) has several negative effects on the heart including increase in myocardial end-systolic stress, venous return and sympathetic activity, all potential stimuli of left ventricular (LV) hypertrophy. The impact of the severity of OSA on LV geometry is unknown. We hypothesized that OSA is related to ...
Penicka Martin - - 2010
This case describes a middle-aged patient with normal ejection fraction (64%) and significant dyspnoea which could not be explained by results from routine examinations. A pressure-volume loop analysis revealed severe left ventricular (LV) dyssynchrony to be the underlying mechanism of heart failure. The patient underwent implantation of a biventricular pacemaker. ...
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