Search Results
Results 351 - 400 of 2339
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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 H Columbia University Medical Center, New York, NY 10032, - - 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 ...
Kimura Hiroshi - - 2011
Diastolic heart failure is the most common clinical form of heart failure. Tissue Doppler imaging (TDI) is often used to quantitate left ventricular (LV) diastolic function. The purpose of this study was to identify the determinant(s) of diastolic dysfunction in patients with end-stage renal disease on hemodialysis (HD), using the ...
Prasad Anand - - 2010
Congestive heart failure in the setting of a preserved left ventricular (LV) ejection fraction is increasing in prevalence among the senior population. The underlying pathophysiologic abnormalities in ventricular function and structure remain unclear for this disorder. We hypothesized that patients with heart failure with preserved ejection fraction (HFPEF) would have ...
Yoshida Naoyasu - - 2010
The aim of this study was to investigate the role and limitations of left atrial (LA) preload or contractility as determinants of active LA emptying in patients with heart failure. In 56 healthy individuals (controls) and 30 patients with heart failure, the LA volume before atrial contraction (LAV(pre) I), the ...
Shudo Yasuhiro - - 2010
Little information related to the effects of surgical ventricular reconstruction on left ventricular diastolic function is available. The aims of this study were to examine the effects of surgical ventricular reconstruction on left ventricular diastolic function and assess the predictive significance of that function on clinical outcome in patients with ...
Sadeghian Hakimeh - - 2010
Echocardiographic measurements of time-to-peak systolic velocities (Ts) are helpful for assessing the degree of cardiac asynchrony. We assessed the degree of ventricular asynchrony in structurally normal heart according to Ts by tissue Doppler imaging. We performed conventional echocardiography and tissue velocity imaging for 65 healthy adult volunteers to measure the ...
Mizuguchi Yukio - - 2010
Pulsed tissue Doppler imaging is increasingly used to record mitral annular motion (MAM) velocity pattern. A reversed MAM velocity wave (Cm) is commonly seen at the beginning of the mitral valve closure in timing, whereas the underlying mechanism and clinical significance have not been studied. Conventional, pulsed Doppler, pulsed tissue ...
Sim┼ček Ziya - - 2010
The most important sequel of acute rheumatic fever is mitral stenosis in long-term. The aim of the study is to determine left ventricular (LV) functions by tissue Doppler imaging (TDI) and strain/strain rate echocardiography (SE/SRE) in mitral stenosis patients who had no clinical signs of heart failure. Our study was ...
Angelo Lilian C - - 2010
To determine reference values for tissue Doppler imaging (TDI) and pulsed Doppler echocardiography for left ventricular diastolic function analysis in a healthy Brazilian adult population. Observations were based on a randomly selected healthy population from the city of Vitória, Espírito Santo, Brazil. Healthy volunteers (n = 275, 61.7% women) without ...
Hashima Jason N JN Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Oregon Health & Science University, Portland, OR 97239, USA. - - 2010
We hypothesized that fetal ventricular diastolic filling characteristics are related to fetal heart rate (FHR) and pulmonary vascular impedance. Rhesus monkeys underwent Doppler ultrasonography at near-term gestation. Tricuspid (TV) and mitral valve (MV) blood velocity waveforms were used to calculate maximum velocity (V-max) and velocity time integral (VTI) E/A ratios ...
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 ...
Otani Kyoko - - 2010
Mitral inflow patterns reflect not only left ventricular diastolic function but also left atrial (LA) remodeling. The aim of this study was to determine the effects of left ventricular diastolic dysfunction on LA volumetric and functional parameters assessed using two-dimensional speckle-tracking echocardiography. Two-dimensional speckle-tracking analysis of the LA wall in ...
Hu Yu-Feng - - 2010
The presence of diastolic dysfunction increases the risk of atrial fibrillation (AF), and might be associated with the left atrial (LA) substrate. The aim of the present study was to investigate the relationships between the diastolic dysfunction, atrial substrate and outcome of the catheter ablation. Eighty-three patients with paroxysmal AF ...
Palmieri Vittorio - - 2010
Reproducibility of Doppler echocardiography for assessment of inter-ventricular and intra-left ventricular (LV) dyssynchrony, and its clinical implications, have not been established. Twenty-eight subjects (heart failure stages A-C, 61% with QRS ≥ 120 ms, ejection fraction (EF) ≤ 35%) underwent two consecutive echo-studies within 24h to evaluate test-re-test reproducibility of inter-ventricular ...
Fukuta Hidekatsu - - 2010
Although left ventricular (LV) diastolic dysfunction is associated with increased risk for incident heart failure in patients with coronary artery disease (CAD), no specific treatment for diastolic abnormalities has been established. Animal and small human studies have shown that an acute increase in LV afterload adversely impacts on LV early ...
Bassareo Pier Paolo - - 2010
The univentricular heart (UVH) corrected by Fontan repair is characterized by a single dilated pumping chamber, which is both hypertrophic and hypocontractile. The complex geometrical distortion and asynchronous contraction of this organ prevents assessment of systolic and diastolic function by traditional echocardiographic procedures. Sixteen children (10 males, 6 females) aged ...
Letti Müller A L - - 2010
To examine, in patients with premature rupture of the amniotic membranes (PROM) at < 34 weeks of gestation, the relationship between fetal myocardial performance measured by the Tei index and fetal inflammatory response syndrome (FIRS). A case-control study was conducted including 15 preterm PROM patients with gestational age between 24 ...
Fennira Sana - - 2010
AIM: Myocardial ischemia impairs the diastolic left ventricular (LV) function earlier than the systolic function. We evaluated the value of pulse-wave Doppler Tissue Imaging (DTI) in the study of regional myocardial function of LV in patients with coronary artery disease. METHODS: We performed a prospective study in 60 patients with ...
Nishimura Kazuhisa - - 2011
The aim of this study was to investigate the significance of the MOSAIC (measurement of stenosis by aliasing coronary flow) method for the detection of proximal left coronary stenosis in patients with unstable angina (UA) using transthoracic Doppler echocardiography (TTDE). Patients (n=107) with UA were evaluated. Proximal left coronary flow ...
Rohani Atoosheh - - 2010
Sulfur mustard (SM) is an alkylating chemical warfare agent that was widely used during Iran-Iraq war between 1983 and 1988. SM exposure leads to various late complications. The aim of this study was to determine the late cardiovascular effects of SM in war-disabled Iranian victims. This was a retrospective cohort ...
Russo Cesare C Department of Medicine, Columbia University, New York, NY 10032, - - 2010
Racial-ethnic disparities exist in cardiovascular risk factors, morbidity, and mortality. Left ventricular diastolic dysfunction is a predictor of mortality and of cardiovascular outcome including incident heart failure. We sought to assess whether race-ethnic differences in diastolic function exist. Such differences may contribute to the observed disparities in cardiovascular outcomes. Two-dimensional ...
Yuan Lijun L Penn Cardiovascular Institute and Division of Cardiovascular Diseases, University of Pennsylvania, PA 19104, - - 2010
With the continued development of genetically engineered mouse models of cardiac disease, further advancement of noninvasive techniques for evaluating cardiac diastolic dysfunction in these models would be valuable. Therefore, we performed comprehensive transmitral and pulmonary venous Doppler echocardiographic studies to devise novel indices of diastolic function in a mouse model ...
López-Candales Angel - - 2010
Background: 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. Methods: Measurements of right ventricular (RV) performance with TDI of ...
Wahl Andreas - - 2011
Systolic right ventricular (RV) function is an important predictor in the course of various congenital and acquired heart diseases. Its practical determination by echocardiography remains challenging. We compared routine assessment of lateral tricuspid annular systolic motion velocity (TV(lat), cm/s) using pulsed-wave tissue Doppler imaging from the apical 4-chamber view with ...
Atilgan Dursun - - 2010
OBJECTIVE: Standard echocardiographic methods reflect chamber dynamics and do not provide a direct measure of myocardial fiber shortening. Therefore we evaluated longitudinal left ventricular myocardial function by tissue Doppler echocardiography; strain (S), strain rate (SR), tissue Doppler velocity (TDV) in newly diagnosed mild to moderate hypertensive patients. METHODS: Our cross-sectional ...
Sen Nihat - - 2010
The goal of this study was to evaluate the relationship between admission hemoglobin levels and left ventricular systolic functions in patients admitted with first ST-segment elevated myocardial infarction (STEMI). The study was conducted prospectively in three centers in 483 consecutive patients (402 men, 81 women; mean age 56.5±11.2 years; range ...
Varli Murat - - 2010
BACKGROUND AND AIMS: Obesity is one of the most common diseases in the world. Particularly in elderly subjects, the effects of weight loss on cardiac functions have not been previously investigated by means of pulsed wave tissue doppler imaging (PWTDI). Using PWTDI, we examined the effects of weight loss on ...
Butz Thomas T Department of Cardiology, Heart Center Northern-Westphalia, Bad Oeynhausen, Germany. - - 2010
Echocardiographic tissue Doppler imaging (TDI) has been proposed for the differentiation of physiologic left ventricular hypertrophy and pathologic left ventricular hypertrophy in athletes. In addition, cutoff values for systolic (S'<9 cm/s) and early diastolic (E'<9 cm/s) myocardial velocities had been defined. The aim of our study was the analysis of ...
Aydin Kaderli Aysel - - 2010
Cardiac sarcoidosis is symptomatic in only 5% of patients, and it is an independent predictor of mortality and carries a very poor prognosis. In our study, we aimed to assess left ventricle (LV) systolic and diastolic functions with tissue Doppler imaging (TDI) in patients with early grade pulmonary sarcoidosis. The ...
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