Search Results
Results 351 - 400 of 2317
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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 - - 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 ...
Russo Cesare - - 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 ...
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 ...
Yuan Lijun - - 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 ...
Butz Thomas - - 2010
BACKGROUND AND OBJECTIVE: 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 ...
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 ...
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 ...
Russell Kristoffer - - 2010
Better clinical tools for measuring left ventricular electrical dyssynchrony are needed. The present study investigates if onset of active myocardial force generation (AFG) may serve as a measure of electrical dyssynchrony. In anesthetized dogs, we evaluated left ventricular mechanical dyssynchrony by 2 different approaches. First, we measured timing of peak ...
Popovic Zoran B - - 2010
It is unknown whether longitudinal rotation (LR), often seen in cardiac resynchronization therapy candidates, may affect mitral annular early diastolic (E') velocities and tricuspid annular motion. We assessed whether (1) LR affects the amplitude and timing of septal and lateral mitral annular E' velocities and tricuspid annular systolic and E' ...
Savage Andrew - - 2010
Parameters derived from Doppler echocardiography, such as the myocardial performance index (MPI) and the ratio of peak velocity of early diastolic prograde flow (E) across the atrioventricular valve (AVV) divided by the peak velocity of early diastolic tissue motion at the AVV annulus (E') (E:E' ratio), are routinely used to ...
Hershenson Jared A - - 2010
Tissue Doppler imaging measurements could be used to quantitate ventricular function in patients with systemic single ventricles. The objective of the present study was to measure the tissue doppler imaging-derived indexes of function and dyssynchrony in patients with single ventricular physiology and compare these values with those from control patients. ...
Comas Montse - - 2010
OBJECTIVE: To evaluate cardiac function by tissue Doppler imaging vs conventional echocardiography in intrauterine growth restriction. STUDY DESIGN: A prospective study in 25 intrauterine growth restriction, and in 50 normally grown fetuses between 24 and 34 weeks. Conventional echocardiography (E/A ratios, outflow tract velocities and myocardial performance index), and tissue ...
Guazzi Marco - - 2010
Previous investigations have reported a relationship between variables obtained from echocardiography with tissue Doppler imaging (TDI) and cardiopulmonary exercise testing (CPX) in systolic heart failure (HF) cohorts. The purpose of the present investigation was to perform a comparative analysis between echocardiography with TDI and CPX in patients with HF and ...
Chinali Marcello - - 2010
Few epidemiological studies have examined differences in the prevalence of risk factors and comorbidities in patients with systolic heart failure (HF), as compared with those with diastolic HF. We analyzed data from 1426 residents of the Worcester (MA) metropolitan area hospitalized at all 11 greater Worcester medical centers for acute ...
Karaahmet Tansu - - 2010
Primary myocardial involvement is common in systemic sclerosis (SSc). We evaluated the atrial and ventricular electromechanical characteristics by using tissue Doppler echocardiography in SSc patients with subclinical cardiac involvement. Twenty-seven consecutive patients (24 women; mean age +/- SD 49.9 +/- 11.3 years) presenting with SSc without pulmonary arterial hypertension or ...
Erden Ismail - - 2010
SUMMARY AIM: The prevalence of myocardial involvement in influenza infection ranges from 0% to 12% depending on the diagnostic criteria used to define myocarditis. Whether such an association holds for the novel influenza A strain, pandemic-2009-H1N1, remains unknown. The aim of this present study is to evaluate the cardiovascular manifestations ...
Zimbarra Cabrita Inês - - 2010
Myocardial performance index (MPI) measured by conventional Doppler is routinely used to assess right ventricular (RV) systolic function in patients with pulmonary hypertension (PH). Our aim was to determine whether MPI measured by Doppler tissue imaging (tMPI) is effective in assessing RV function in these patients. Retrospectively, we have studied ...
Seth Rachna - - 2010
To study role of Tissue Doppler imaging (TDI) in identification of cardiomyopathy before development of ventricular dysfunction. Twenty-five patients with Duchenne's (DMD) and 10 with Becker's (BMD) muscular dystrophy along with 20 controls were evaluated using TDI. Pulse Tissue Doppler signals of the lateral left ventricle wall (lateral mitral annulus) ...
Mukhaini Mohammed - - 2010
BACKGROUND: It is known that right ventricular systolic parameters as assessed by color tissue Doppler imaging (TDI) are abnormal in patients with inferior wall ST elevation myocardial infarction (IWMI) with right ventricular myocardial infarction (RVMI). This study was undertaken to determine right ventricular diastolic function as assessed by TDI in ...
Pala Selcuk - - 2010
Despite many potential benefits, thiazolidinedione (TZD) use has been associated with increased exacerbation rate of heart failure due to fluid retention. In our study, the effect of rosiglitazone and pioglitazone on myocardial function in patients with type 2 diabetes mellitus (DM) and normal left ventricular systolic function was evaluated by ...
Henareh Loghman - - 2010
To investigate the association between intima-media thickness of brachial and common carotid arteries and factors of the coagulation- and fibrinolysis-system with left ventricular diastolic dysfunction in patients with a previous myocardial infarction. One hundred and twenty three patients, men (76%) and women (24%) aged between 32 and 81 years with ...
Shabanian Reza - - 2010
Early detection of myocardial iron overload is crucial for optimal management of patients with beta thalassemia major, which could lead to intensification of iron chelating therapy. In this study, we evaluate the conventional echocardiography and tissue Doppler imaging measurements in patients with beta thalassemia major and further introduce the assessment ...
Rydman Riikka - - 2010
BACKGROUND: Assessments of right ventricular (RV) function using myocardial velocities in patients with pulmonary embolism (PE) may add vital information. METHODS: Thirty-four patients with PE were studied in the acute stage and 3 months afterward. Tricuspid annular velocity was recorded using pulsed-wave Doppler tissue imaging. RESULTS: At the time of ...
Montisci Roberta - - 2010
BACKGROUND: The chronic consumption of androgenic anabolic steroids (AAS) has shown to cause subclinical impairment of myocardial function. Pulsed-wave Doppler tissue imaging (PWDTI) detects early regional alterations of ventricular function, whereas integrated backscatter cyclic variations (IBScv) are tightly related to the contractile efficiency of the left ventricular wall. The aim ...
Meimoun Patrick - - 2010
To assess the usefulness of non-invasive coronary flow reserve (CFR) to predict left ventricular adverse remodelling (LVR) after ST-elevation myocardial infarction (STEMI). Sixty-five consecutive patients (mean age 58 +/- 13 years, 24 women) with a first anterior STEMI, underwent prospectively CFR in the distal part of the left anterior descending ...
Leong Darryl P - - 2010
Heart failure with normal ejection fraction (HFNEF), previously referred to as diastolic heart failure, has increased in prevalence as a cause of heart failure, now accounting for up to 50% of all cases. Contrary to initial evidence, the prognostic outlook in HFNEF may be similar to that of heart failure ...
Meco M - - 2010
AIM: The main indexes of ventricular function used in clinical practice are strongly influenced by the ventricular load conditions. Tissue Doppler imaging (TDI) has been reported to be a powerful modality that enables assessment of ventricular wall motion with a high temporal and spatial resolution. The study of the systolic ...
Duzenli M A - - 2010
OBJECTIVES: The results of the studies in which the effect of hormone replacement therapy (HRT) on cardiac function have been evaluated are rather disputable. In these studies, cardiac function was evaluated with conventional echocardiographic methods. This study was planned in order to investigate the effects of HRT on myocardial velocities ...
Bartlett Heather L - - 2010
Advances using Xenopus as a model permit valuable inquiries into cardiac development from embryo to adult. Noninvasive methods are needed to study cardiac function longitudinally. The objective of this study was to evaluate the feasibility of echocardiographic studies in Xenopus and establish normative data of adult cardiac structure and function. ...
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