BACKGROUND Conventional pacemaker implantation induces left ventricular (LV) dyssynchrony, which might affect the LV function. We sought to evaluate the impact of different right ventricular (RV) pacing sites on the LV dyssynchrony and performance. METHODS Comprehensive echocardiographic evaluation including the atrio-ventricular, inter- and intra-ventricular dyssynchrony based on M-mode, con...

Bronchopulmonary dysplasia (BPD) is characterized by alveolar-capillary simplification and associated with pulmonary hypertension (PH) in preterm infants. The contribution of left ventricle (LV) disease towards this severe BPD-PH phenotype not well established. We aimed to describe the longitudinal trajectory LV function as measured tissue Doppler imaging (TDI) its association BPD-PH. retrospec...

BACKGROUND Cardiac dysfunction in patients with type 1 diabetes (T1D) represents one of the serious complications. To evaluate the cardiac function in children with T1D by conventional echocardiography and tissue Doppler imaging (TDI). METHODS The study included 40 T1D patients (age between 6 and 16 years) with > 5 years duration of diabetes and 42 healthy control children. The patients were ...

BACKGROUND Isovolumic acceleration (IVA) is a new tissue Doppler parameter in the assessment of systolic function of both left and right ventricles. It remains unaffected with the changes in pre- and after-load within the physiological range. The aim of our study was to assess the effect of mitral stenosis degree, which is determined by echocardiography, on the left ventricular (LV) function us...

AIMS In patients with ischaemic left ventricular (LV) dysfunction and viable myocardium, revascularization improves systolic function. Diastolic dysfunction is also present in such patients; however, whether revascularization improves diastolic function also is largely unknown. METHODS Twenty-six patients with chronic ischaemic cardiomyopathy [ejection fraction (EF) 32 +/- 6%, wall motion sco...

INTRODUCTION Chagas' disease can lead to severe and potentially lethal damage of cardiac function. Thus, the identification of cardiac abnormalities in patients presenting the indeterminate form (IF) can be important for risk stratification. This paper aimed to demonstrate whether IF chagasic patients who presented wall motion abnormalities showed functional and electric disturbances compared t...

S Noninvasive Imaging 455A JACC March 19,2003 and MVP was analyzed off-line. Results : 1) Wall motion score index (WMSI) assessed by PDE decreased significantly in 9 of 12 patients (75%) reflecting improvement of regional wall motion abnormality. 2) In contrast, in 11 of 12 patients (92%) the peak systolic myocardial velocity (1.17 vs 4.97cm!s, p < 0.001) and transmyocardial velocity gradient (...

OBJECTIVES The purpose of this study was to compare left ventricular (LV) dyssynchrony assessment by gated myocardial perfusion single-photon emission computed tomography (SPECT) (GMPS) and tissue Doppler imaging (TDI). BACKGROUND Recently, it has been suggested that LV dyssynchrony is an important predictor of response to cardiac resynchronization therapy (CRT); dyssynchrony is predominantly...

BACKGROUND Tissue Doppler imaging (TDI) is a new echocardiographic imaging technique that is believed to be superior to older conventional techniques in assessing abnormalities of cardiac function in many conditions affecting the heart. There are very limited data regarding the role of TDI in evaluating patients with mitral valve prolapse (MVP). Current study evaluates diastolic function in pat...