scholarly journals Differential Changes in Myocardial Performance Index and Its Time Intervals in Donors and Recipients of Twin-to-Twin Transfusion Syndrome before and after Laser Therapy

2018 ◽  
Vol 44 (4) ◽  
pp. 305-310 ◽  
Author(s):  
Javier U. Ortiz ◽  
Ximena Torres ◽  
Elisenda Eixarch ◽  
Mar Bennasar ◽  
Monica Cruz-Lemini ◽  
...  
Keyword(s):  
Laser Therapy ◽  
Performance Index ◽  
Myocardial Performance Index ◽  
Myocardial Performance ◽  
Time Intervals ◽  
Before And After

Time intervals and myocardial performance index by tissue Doppler imaging

2010 ◽  
Vol 6 (5) ◽  
pp. 393-402 ◽  
Author(s):  
Michele Correale ◽  
Antonio Totaro ◽  
Riccardo Ieva ◽  
Natale Daniele Brunetti ◽  
Matteo Di Biase
Keyword(s):  
Tissue Doppler Imaging ◽  
Performance Index ◽  
Tissue Doppler ◽  
Myocardial Performance Index ◽  
Doppler Imaging ◽  
Myocardial Performance ◽  
Time Intervals

scholarly journals Cardiac time intervals and myocardial performance index for prediction of twin‐twin transfusion syndrome

2021 ◽  
Author(s):  
Manon. Gijtenbeek ◽  
Sanne J. Eschbach ◽  
Johanna M. Middeldorp ◽  
Frans J.C.M. Klumper ◽  
F. Slaghekke ◽  
...  
Keyword(s):  
Performance Index ◽  
Myocardial Performance Index ◽  
Myocardial Performance ◽  
Time Intervals ◽  
Cardiac Time Intervals

Myocardial performance index by tissue Doppler echocardiography predicts adverse events in patients with atrial fibrillation

2019 ◽  
Vol 21 (5) ◽  
pp. 560-566 ◽  
Author(s):  
Maria Dons ◽  
Flemming Javier Olsen ◽  
Martina Chantal de Knegt ◽  
Thomas Fritz-Hansen ◽  
Rasmus Mogelvang ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Performance Index ◽  
Prognostic Value ◽  
Independent Predictor ◽  
Tissue Doppler ◽  
Myocardial Performance Index ◽  
Left Ventricular Ejection ◽  
Myocardial Performance ◽  
Time Intervals ◽  
Increased Risk

Abstract Aims  The prognostic value of myocardial performance index (MPI) has not yet been assessed in patients with atrial fibrillation (AF). The aim of this study was to evaluate the prognostic value of MPI by tissue Doppler imaging (TDI) M-mode in AF patients. Methods and results  Echocardiograms from 210 patients with AF during examination were analysed offline. Patients with known heart failure (HF) were excluded. Time intervals were measured using an M-mode line through the mitral valve leaflets to provide a colour diagram of the mitral leaflet movement so all time intervals could be measured from one cardiac cycle. MPI was calculated as the sum of isovolumic relaxation time and isovolumic contraction time divided by the ejection time [(IVRT+IVCT)/ET]. During a median follow-up of 2.4 years, 84 patients (40%) reached the combined endpoint of major adverse cardiovascular events (MACE), being all-cause mortality, HF, myocardial infarction, or stroke. Increasing MPI was significantly associated with an increased risk of MACE, and the risk increased with 20% per 0.1 increase in MPI [hazard ratio (HR) 1.20, 95% confidence interval (CI) 1.10–1.32; P < 0.001]. Increasing MPI was also significantly associated with a lower left ventricular ejection fraction (LVEF) (P < 0.001). Nevertheless, MPI remained an independent predictor even after adjustment for age, sex, diabetes mellitus, left atrial volume, and LVEF (HR 1.12, 95% CI 1.01–1.25; P = 0.038). Conclusion  Increasing MPI was significantly associated with increased risk of MACE and remained an independent predictor after multivariable adjustment. This demonstrates that the MPI obtained by TDI M-mode might be useful in assessing cardiac function in AF patients with ongoing arrhythmia during examination.

scholarly journals The Fetal Modified Myocardial Performance Index: Is Automation the Future?

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Priya Maheshwari ◽  
Amanda Henry ◽  
Alec W. Welsh
Keyword(s):  
Performance Index ◽  
Left Ventricular ◽  
Myocardial Performance Index ◽  
Time Interval ◽  
Reference Ranges ◽  
Myocardial Performance ◽  
Time Intervals ◽  
Measurement Variability ◽  
Cardiac Time Intervals ◽  
The Future

The fetal modified myocardial performance index (Mod-MPI) is a noninvasive, pulsed-wave Doppler-derived measure of global myocardial function. This review assesses the progress in technical refinements of its measurement and the potential for automation to be the crucial next step. The Mod-MPI is a ratio of isovolumetric to ejection time cardiac time intervals, and the potential for the left ventricular Mod-MPI as a tool to clinically assess fetal cardiac function is well-established. However, there are wide variations in published reference ranges, as (1) a standardised method of selecting cardiac time intervals used in Mod-MPI calculation has not been established; (2) cardiac time interval measurement currently requires manual, inherently subjective placement of callipers on Doppler ultrasound waveforms; and (3) ultrasound machine settings and ultrasound system type have been found to affect Mod-MPI measurement. Collectively these factors create potential for significant inter- and intraobserver measurement variability. Automated measurement of the Mod-MPI may be the next key development which propels the Mod-MPI into routine clinical use. A novel automated system of Mod-MPI measurement is briefly presented and its implications for the future of the Mod-MPI in fetal cardiology are discussed.

Sign in / Sign up

Export Citation Format

Share Document