23 research outputs found
Cardiac Time Intervals by Tissue Doppler Imaging M-Mode:Normal Values and Association with Established Echocardiographic and Invasive Measures of Systolic and Diastolic Function
Get PDFPURPOSE:To define normal values of the cardiac time intervals obtained by tissue Doppler imaging (TDI) M-mode through the mitral valve (MV). Furthermore, to evaluate the association of the myocardial performance index (MPI) obtained by TDI M-mode (MPITDI) and the conventional method of obtaining MPI (MPIConv), with established echocardiographic and invasive measures of systolic and diastolic function. METHODS:In a large community based population study (n = 974), where all are free of any cardiovascular disease and cardiovascular risk factors, cardiac time intervals, including isovolumic relaxation time (IVRT), isovolumic contraction time (IVCT), and ejection time (ET) were obtained by TDI M-mode through the MV. IVCT/ET, IVRT/ET and the MPI ((IVRT+IVCT)/ET) were calculated. We also included a validation population (n = 44) of patients who underwent left heart catheterization and had the MPITDI and MPIConv measured. RESULTS:IVRT, IVRT/ET and MPI all increased significantly with increasing age in both genders (p<0.001 for all). IVCT, ET, IVRT/ET, and MPI differed significantly between males and females, displaying that women, in general exhibit better cardiac function. MPITDI was significantly associated with invasive (dP/dt max) and echocardiographic measures of systolic (LVEF, global longitudinal strain and global strainrate s) and diastolic function (e', global strainrate e)(p<0.05 for all), whereas MPIConv was significantly associated with LVEF, e' and global strainrate e (p<0.05 for all). CONCLUSION:Normal values of cardiac time intervals differed between genders and deteriorated with increasing age. The MPITDI (but not MPIConv) is associated with most invasive and established echocardiographic measures of systolic and diastolic function
Optimisation of coronary vascular territorial 3D echocardiographic strain imaging using computed tomography:a feasibility study using image fusion
No full textConcordance and reproducibility between M-mode, tissue Doppler imaging, and two-dimensional strain imaging in the assessment of mitral annular displacement and velocity in patients with various heart conditions
No full textGlobal longitudinal strain corrected by RR-interval is a superior echocardiographic predictor of outcome in patients with atrial fibrillation
No full textCoronary plaque composition assessed by cardiac computed tomography using adaptive Hounsfield unit thresholds
No full textLeft ventricular end-diastolic pressure is associated with left atrial functional measures by echocardiography
No full textMultimodality Cardiac Imaging for the Assessment of Left Atrial Function and the Association With Atrial Arrhythmias
No full textMyocardial performance index by tissue Doppler echocardiography predicts adverse events in patients with atrial fibrillation
No full textThe association between MPI<sub>TDI</sub> and MPI<sub>Conv</sub>, and invasive and echocardiographic measures of systolic and diastolic obtained from the validation cohort (group B, n = 44).
No full text<p>The association between MPI<sub>TDI</sub> and MPI<sub>Conv</sub>, and invasive and echocardiographic measures of systolic and diastolic obtained from the validation cohort (group B, n = 44).</p
Diagnostic accuracy of MPI<sub>TDI</sub> for diagnosing impaired systolic and/or diastolic function in the validation cohort (group B, n = 44).
No full text<p>Diagnostic accuracy of MPI<sub>TDI</sub> for diagnosing impaired systolic and/or diastolic function in the validation cohort (group B, n = 44).</p
