Search Results
Results 301 - 350 of 2317
< 2 3 4 5 6 7 8 9 10 11 12 >
Akintunde Adeseye A - - 2011
Left ventricular geometry is associated with cardiovascular events and prognosis. The Tei index of myocardial performance is a combined index of systolic and diastolic dysfunction and has been shown to be a predictor of cardiovascular outcome in heart diseases. The relationship between the Tei index and left ventricular geometry has ...
Chen Shih-Jen - - 2011
Computed tomographic coronary angiography (CTA) is a non-invasive alternative to conventional coronary angiography (CCA) in detecting chronic coronary artery disease (CAD). However, the value of CTA in estimating acute myocardial infarction (AMI) has not been evaluated. CTA and CCA were performed on 10 patients with non-ST-elevated AMI and 17 patients ...
Kim Ju Han - - 2011
The Thrombolysis in Myocardial Infarction (TIMI) risk score (TRS) has proven value in predicting prognosis in unstable angina/non ST-elevation myocardial infarction (NSTEMI) as well as in ST-elevation myocardial infarction. The TRS system has little implication, however, in the extent of myocardial damage in high-risk patients with NSTEMI. A total of ...
Papoutsidakis Nikolaos - - 2011
There is accumulating clinical evidence that acute liver failure may be regularly associated with myocardial injury. To test this hypothesis in a standardized experimental setting, we used two porcine models of ALF. In 14 domestic pigs ALF was induced by either a) surgical devascularization of the liver (DV group, n ...
Ionac A - - 2011
In this study we aimed to evaluate the three-dimensional (3D) transthoracic echocardiography (TTE) in the assessment of cardiac valve morphology. Bidimensional (2D) and real-time 3D TTE was performed in 104 patients consecutive with cardiac catheterisation, prior to valve surgery. Using surgical findings as the gold standard, 2D and 3D TTE ...
Hanssen Henner - - 2011
Recent reports provide indirect evidence of myocardial injury and ventricular dysfunction after prolonged exercise. However, existing data is conflicting and lacks direct verification of functional myocardial alterations by CMR [cardiac MR (magnetic resonance)]. The present study sought to examine structural myocardial damage and modification of LV (left ventricular) wall motion ...
Clur S A B - - 2011
Trisomy 21 is associated with an increased nuchal translucency thickness (NT), abnormal ductus venosus (DV) flow at 11-14 weeks' gestation and congenital heart defects (CHD), and cardiac dysfunction has been hypothesized as the link between them. We therefore aimed to investigate whether cardiac function is altered in trisomy 21 fetuses. ...
Shahabi Venous - - 2011
Rapid measuring of B-type natriuretic peptide (BNP) in the emergency departments effectively results in evaluating patients with acute cardiac attacks and has appeared to be a useful prognostic marker of cardiovascular risk. A current study came to address the association between plasma N-terminal pro BNP level and severity of coronary ...
Comas M - - 2011
To construct gestational age (GA)- and estimated fetal weight (EFW)-adjusted reference ranges for tissue Doppler cardiac function parameters from 24 to 41 weeks' gestation. This was a prospective cross-sectional observational study involving 213 singleton pregnancies between 24 and 41 weeks' gestation. Myocardial peak velocities and myocardial performance index (MPI') were ...
Ke Dazhi - - 2011
Objective In the aged population, serum cholesterol is directly correlated with coronary heart disease (CHD) risk. We aimed to investigate the correlation between non-high density lipoprotein cholesterol (non-HDL-C) level and CHD and coronary lesions in an aged population. Methods 1,272 cases of old patients who were more than 65 years ...
Nakajima Kenichi - - 2011
Myocardial perfusion imaging (MPI) has been used to estimate cardiac event risk. The aim of the present study is to achieve stable risk estimation based on perfusion scoring and a multi-center prognostic database. Multivariate logistic regression analysis was performed to estimate cardiac event risk based on a J-ACCESS study. A ...
Che Jingjin - - 2011
Background: The relationship between autoantibodies against human oxidized low-density lipoprotein (anti-oxLDL) and the progression of atherosclerotic diseases is unclear. This study aimed to investigate the association between serum anti-oxLDL titers and the severity and extent of coronary stenotic lesions. Methods: We measured the titers of IgG anti-oxLDL by enzyme-linked immunosorbent ...
Iwashima Yoshio - - 2011
Concomitant diabetes and/or chronic kidney disease (CKD) in hypertensive patients may portend additive deleterious effects on active left ventricular relaxation. We investigated the effect of a passive leg lifting (PLL) maneuver, a means of increasing preload, on left ventricular filling to assess the relationship of concomitant diabetes mellitus (DM) and/or ...
Mehra Sanjay - - 2011
Numerous clinical studies have shown that coronary artery calcium scoring provides substantial incremental risk prediction beyond conventional coronary risk factors for coronary heart disease events. About half of all patients with coronary artery disease (CAD) present initially with unexpected myocardial infarction or sudden death. Early identification of this subgroup of ...
Clur S A B - - 2011
The pathophysiological background of an increased nuchal translucency (NT) is still poorly understood. Cardiac dysfunction has been proposed as a cause. The aim of this study was to determine if, in fetuses with normal hearts, the NT thickness is related to cardiac function throughout gestation. The NT was measured in ...
Akgul Ebru - - 2011
Objective: Autoimmune chronic thyroiditis (ACT) is characterized by lymphocyte infiltration in the thyroid gland and the presence of antithyroid antibodies in serum. Medical treatment does not affect antibody levels and treatment decision is not definite yet for the euthyroid patients. We aimed to evaluate cardiac autonomic function and global left ...
Carlomagno Guido - - 2011
Objective. Anorexia nervosa is a condition of reduced hemodynamic load, characterized by varying degrees of cardiac remodelling, only in part related to reduced body mass; the mechanism for such variability, as well as its clinical significance, remains unknown. Aim of the study was to assess the possible influence of a ...
Loomba Rohit S - - 2011
Revascularization after myocardial infarction is often achieved via percutaneous coronary intervention, which often entails stenting. Drug-eluting stents have shown benefits over bare metal stents in this setting, and a variety of drug-eluting stents are now available, including sirolimus-, paclitaxel-, and zotarolimus-eluting stents. There are studies that have compared the various ...
Yamamoto Hideya - - 2011
Although the coronary artery calcium (CAC) score as measured with computed tomography (CT) is associated with cardiovascular mortality and morbidity in Western countries, little is known in Asian populations. Three hundred and seventeen Japanese patients (205 men and 112 women) were followed in the study and they underwent both coronary ...
Decker Jeffrey M - - 2011
The goals of this study were to determine: 1) if the CHADS(2) score correlates with left atrial (LA) or left atrial appendage (LAA) thrombus on pre-cardioversion transesophageal echocardiography (TEE) in nonvalvular atrial fibrillation (NVAF); and 2) what, if any, components of the CHADS(2) score are most important in predicting LA/LAA ...
Akil Luma - - 2011
Obesity is among the leading causes of elevated cardiovascular disease (CVD) mortality and morbidity. In the present study, the associations between the increase in body mass index (BMI) and the increase rates of CVD and high blood pressure (HBP) in the states of Mississippi, Alabama, Louisiana, Tennessee, and Colorado are ...
André-Petersson Lena - - 2011
Psychosocial stress has been identified as a risk factor in association with cardiovascular disease but less attention has been paid to heterogeneity in vulnerability to stress. The serial Color Word Test (CWT) measures adaptation to a stressful situation and it can be used to identify individuals that are vulnerable to ...
Yeh Robert W - - 2011
Drug-eluting stents (DES) reduce rates of restenosis compared with bare metal stents (BMS). A number of observational studies have also found lower rates of mortality and non-fatal myocardial infarction with DES compared with BMS, findings not observed in randomized clinical trials. In order to explore reasons for this discrepancy, we ...
Lee Jung Yeop - - 2010
We investigated the thermal effects on heart rate, hemodynamics, and response of vitelline arteries of stage-18 chicken embryos. Heart rate was monitored by a high-speed imaging method, while hemodynamic quantities were evaluated using a particle image velocimetry (PIV) technique. Experiments were carried out at seven different temperatures (36-42 °C with ...
Elmstedt N - - 2010
OBJECTIVE: The high velocity and short duration of the myocardial motion requires a high sampling rate to obtain adequate temporal resolution, this issue becomes even more important when taking under consideration the high fetal heart rate. In this study, we have established optimal sampling requirements for assessing the duration of ...
Rudhani Ibrahim Destan - - 2010
The aim of this prospective study was the assessment of left ventricular and right ventricular diastolic function in patients on hemodialysis (HD) and the correlation of this func-tion with the duration of HD. The study included 42 patients (22 females and 20 males) with chro-nic renal failure (CRF), treated with ...
Urabe Takao - - 2010
In the past, transient ischemic attack (TIA) was defined as any sudden, focal cerebral ischemic event with neurological deficit lasting <24 hours. However, in several series of patients with TIA who underwent diffusion-weighted magnetic resonance imaging, many ischemic episodes with symptoms lasting <24 hours are associated with new infarctions. Therefore, ...
Negrine R J S - - 2012
Objective To measure the left and right ventricular myocardial velocities using tissue Doppler imaging (TDI) in the first 24 h of life in neonates. Design Left and right ventricular peak systolic (S'), early diastolic (E') and late diastolic (A') myocardial velocities were measured using TDI alongside standard echocardiography (including peak ...
Rossi Davide - - 2011
Several echo-Doppler parameters, particularly the E/e' ratio, have been explored in the attempt to improve prognostic stratification in chronic heart failure (CHF) patients. In most studies, however, left ventricular filling pressure was not measured and patients with severe impairment of left ventricular function were not considered. The aim of this ...
Rosenblum Hannah - - 2010
Peak oxygen consumption (VO(2) ) during cardiopulmonary exercise testing (CPET) is a powerful predictor of survival, providing an indirect assessment of cardiac output (CO). Noninvasive indices of CO derived from bioreactance methodology would add significantly to peak VO(2) as a means of risk-stratifying patients with heart failure. In this study, ...
Correale Michele - - 2011
The application of tissue Doppler imaging (TDI) has shown remarkable growth in clinical practice during the past few years, especially, in risk stratification of patients with coronary heart disease or heart failure (systolic and diastolic). Myocardial performance index (MPI) is a Doppler echocardiographic parameter defined as the sum of the ...
Matyal Robina - - 2010
BACKGROUND: We used echocardiographically derived myocardial performance index (MPI) to assess changes in global right ventricular function with lung isolation. We hypothesized that changes in MPI with lung isolation may be related to the incidence of postoperative supraventricular tachycardia (SVT). METHODS: Transesophageal echocardiographic examinations were performed after induction of general ...
Cadore Michel Pereira - - 2010
Scores to predict surgical risk in patients submitted to myocardial revascularization surgery are broadly used. To develop a score capable to predict mortality in patients submitted to myocardial revascularization surgery. From January 1996 to December 2007, data were collected from 2809 patients submitted to myocardial revascularization surgery at PUC-RS São ...
Bara Christoph - - 2010
Three-dimensional (3-D) visualization of ventricular activation sequence is imperative for the diagnosis and treatment of malignant cardiac arrhythmias. Modern mapping systems that serve as the gold standard for detection and localization of the focus are costly and require an invasive approach into the cavity of the ventricles. The aim of ...
Ichihashi Ko - - 2011
Background: The ratio of the peak transmitral velocity during early diastole (E) to the peak mitral valve annular velocity during early diastole (E') obtained by tissue Doppler imaging correlates with the left ventricular end-diastolic pressure in adults. However, the E/E' ratio has not been established in normal children. The purpose ...
Schober K E - - 2010
Echocardiographic prediction of congestive heart failure (CHF) in dogs has not been prospectively evaluated. CHF can be predicted by Doppler echocardiographic (DE) variables of left ventricular (LV) filling in dogs with degenerative mitral valve disease (MVD) and dilated cardiomyopathy (DCM). Sixty-three client-owned dogs. Prospective clinical cohort study. Physical examination, thoracic ...
Yagmur Julide - - 2011
Our aim was to evaluate whether atrial electromechanical delay measured by tissue Doppler imaging (TDI), which is an early predictor of atrial fibrillation (AF) development, is prolonged in obese subjects. A total of 40 obese and 40 normal-weight subjects with normal coronary angiograms were included in this study. P-wave dispersion ...
Yaylali Y T - - 2011
There have been controversial studies evaluating ventricular functions in patients with idiopathic hypogonadotropic hypogonadism (IHH). A recent study has demonstrated that low serum testosterone levels are associated with increased cardiovascular mortality. We aimed to investigate ventricular functions by standard echocardiography and examine the effects of substitutive therapy on right ventricular ...
Pinamonti Bruno - - 2010
The significance of the progression of systolic and diastolic dysfunctions in hypertrophic cardiomyopathy (HCM) is still an open issue. We sought to evaluate the clinical and prognostic implications of the progression of left ventricular systolic and diastolic dysfunction in HCM. One hundred one HCM patients were studied by echo-Doppler at ...
López-Candales Angel - - 2010
Tissue Doppler imaging (TDI) of mitral (MA) and tricuspid annulus (TA) events characterizes systolic and diastolic properties of each respective ventricle. However, the effect of chronic pulmonary hypertension (cPH) on these TDI annular events has not been well described. Measurements of right ventricular (RV) performance with TDI of the lateral ...
Ristow Bryan - - 2010
PURPOSE OF REVIEW: Accurate noninvasive evaluation of right heart hemodynamics is an essential component of the comprehensive cardiac examination. We aim to highlight recent advances in echocardiography allowing integration of measurements to obtain diagnostic accuracy. RECENT FINDINGS: Reports have advocated different imaging methods to describe right ventricular function and pulmonary ...
Pittarello D - - 2010
This study aimed to assess the effects of fenoldopam, an antihypertensive agent with nephroprotective properties, on myocardial function. The global systolic and diastolic function and the strain rate, a new parameter used to quantify regional myocardial function, were measured with transesophageal echocardiography. Forty patients undergoing elective coronary artery surgery were ...
Hankins Jane S - - 2010
Cardiac failure from myocardial iron deposition is a severe complication in patients with transfusion-related iron overload. Progressive heart damage from iron overload can cause left ventricular systolic and diastolic dysfunction in patients with hematologic disorders. Since nontransfused patients with sickle cell anemia (SCA) have a high incidence of diastolic dysfunction, ...
Marcí Marcello - - 2011
Backgrounds: In this study we tried to evaluate the prognostic significance of several echocardiographic parameters on the occurrence of heart failure or arrhythmias in patients with beta thalassemia. Methods: We investigated possible differences in myocardial function between a population of 37 asymptomatic patients with beta thalassemia and 25 age-matched healthy ...
Kargin Ramazan - - 2011
Background: Previous studies have demonstrated an increased risk for cardiovascular events and pulmonary disease in patients with biomass fuel exposure (BFE). However, biventricular heart function has yet to be investigated in these patients. Left ventricular (LV) myocardial performance index (LVMPI), which is an index of global ventricular function, incorporates ejection, ...
Odland Hans Henrik - - 2010
This study aimed to assess the effect of correcting for the impact of heart rate (HR) or ejection time (ET) on myocardial velocities in the long axis in piglets undergoing hypoxia. The ability to eject a higher volume at a fixed ET is a characteristic of contractility in the heart. ...
Stressig Rüdiger - - 2010
Left heart underdevelopment is commonly observed in fetuses with left diaphragmatic hernia. This finding has been attributed to compression of the left atrium by herniated abdominal organs, redistribution of fetal cardiac output and/or low pulmonary venous return. As preferential right or left heart underdevelopment is usually not a feature of ...
Petko Colin - - 2010
Two-dimensional (2D) speckle tracking (2DST) is a new technique independent of ventricular geometry but not independent of preload and afterload. Using 2DST, this study aimed to investigate differences in right ventricular (RV) function and intraventricular dyssynchrony in patients with hypoplastic left heart syndrome (HLHS) before and after preload-reducing stage 2 ...
Attia Gehan - - 2010
This study aimed to assess the impact of obstructive sleep apnea (OSA) due to adenotonsillar hypertrophy (ATH) on the global myocardial performance in children using tissue Doppler imaging (TDI) and to evaluate the reversibility of the disorder after adenotonsillectomy (AT). The study included 42 children with OSA due to ATH ...
Jakobsen C-J - - 2010
Ketamine may be followed by a general increase in haemodynamics and oxygen consumption, which may be of concern in patients with ischaemic heart disease. The purpose of this study was to evaluate the effect of ketamine on left ventricular (LV) systolic and diastolic function by different modalities of echocardiography and ...
< 2 3 4 5 6 7 8 9 10 11 12 >