Measurement of Cardiac Time Intervals by Doppler Tissue M-Mode Imaging of the Anterior Mitral Leaflet

Kjærgaard, Jesper; Hassager, Christian; Oh, Jae K.; Kristensen, Jens; Berning, J; Søgaard, Peter

doi:10.1016/j.echo.2005.03.043

Cited by 63 publications

(59 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…IVRT, which can provide information related to LV diastolic function, is correlated with dP/dt min and  [12,13,15,16,22]. Several studies have demonstrated that the TDI-derived IVRT is prolonged in patients with LV diastolic dysfunction [9,17,28]. Our results demonstrate that pulsed-TDI-derived IVRT is significantly shortened by dobutamine, but significantly prolonged by esmolol.…”

Section: Discussionsupporting

confidence: 56%

“…Several parameters measured by tissue Doppler imaging (TDI)-derived early and late diastolic myocardial velocities are indicators of diastolic function in dogs, providing diagnostic information and describing the severity of heart disease [4,6,29]. Similarly, TDI-derived isovolumic relaxation time (IVRT) can potentially be used as an indicator of LV diastolic function in humans and dogs with heart disease [3,9,17,28].…”

mentioning

confidence: 99%

See 1 more Smart Citation

The Relationship between Invasive Hemodynamic Measurements and Tissue Doppler-Derived Myocardial Velocity and Acceleration during Isovolumic Relaxation in Healthy Dogs

Hori

Kunihiro

Kanai

et al. 2009

The Journal of Veterinary Medical Science

View full text Add to dashboard Cite

ABSTRACT. This study investigated the feasibility of using the values of tissue Doppler imaging (TDI)-derived myocardial velocity during isovolumic relaxation (V IR ) and myocardial acceleration during isovolumic relaxation (ACC) obtained from the left ventricular (LV) free wall to evaluate LV relaxation in normal dogs. Seven dogs were anesthetized, and dobutamine or esmolol was infused at a rate of 5.0 and 10.0 g/kg/min or 100 and 500 g/kg/min, respectively, via a cephalic vein. The order of drug administration (dobutamine or esmolol) was assigned to each dog. Simultaneous pulsed-Doppler (PD) echocardiography, TDI and hemodynamic measurements were performed. Compared with the baseline values, dobutamine significantly increased dP/dt min, but significantly shortened tau (). Similarly, esmolol significantly decreased dP/dt min, but significantly prolonged . Compared with the baseline values, dobutamine significantly increased V IR and ACC, and esmolol significantly decreased V IR and ACC. Both dP/dt min and  were significantly correlated with TDI-derived IVRT (r=-0.43 and 0.74), V IR (r=0.85 and -0.49) and ACC (r=0.84 and -0.52). These results indicate that the TDIderived V IR and ACC values obtained from the LV free wall can potentially be used to assess LV relaxation in dogs.KEY WORDS: canine, diastolic function, left ventricle, tissue Doppler imaging.

show abstract

Section: Discussionsupporting

confidence: 56%

mentioning

confidence: 99%

The Relationship between Invasive Hemodynamic Measurements and Tissue Doppler-Derived Myocardial Velocity and Acceleration during Isovolumic Relaxation in Healthy Dogs

Hori

Kunihiro

Kanai

et al. 2009

The Journal of Veterinary Medical Science

View full text Add to dashboard Cite

show abstract

“…The advantage and validity of this method have previously been demonstrated. 9,10 Efforts to improve risk stratification, clarify pathophysiological mechanisms, and identify targets for therapeutic intervention are of the utmost importance in patients with ST-segment-elevation myocardial infarction (STEMI). Echocardiography after an acute MI (AMI) is a routine procedure for risk stratification.…”

mentioning

confidence: 99%

Prognostic Value of Cardiac Time Intervals by Tissue Doppler Imaging M-Mode in Patients With Acute ST-Segment–Elevation Myocardial Infarction Treated With Primary Percutaneous Coronary Intervention

Møgelvang

Søgaard

Pedersen

et al. 2013

Circ: Cardiovascular Imaging

View full text Add to dashboard Cite

Background-Color tissue Doppler imaging M-mode through the mitral leaflet is an easy and precise method to estimate all cardiac time intervals from 1 cardiac cycle and thereby obtain the myocardial performance index (MPI). However, the prognostic value of the cardiac time intervals and the MPI assessed by color tissue Doppler imaging M-mode through the mitral leaflet in patients with ST-segment-elevation myocardial infarction (MI) is unknown. Methods and Results-In total, 391 patients were admitted with an ST-segment-elevation MI, treated with primary percutaneous coronary intervention, and examined by echocardiography a median of 2 days after the ST-segment-elevation MI. Outcome was assessed according to death (n=33), hospitalization with heart failure (n=53), or new MI (n=25). Follow-up time was a median of 25 months. The population was stratified according to tertiles of the MPI. The risk of new MI, being admitted with congestive heart failure or death, increased with increasing tertile of MPI, being ≈3 times as high for the third tertile compared with the first tertile (hazard ratio, 2.8; 95% confidence interval, 1.7-4.7; P<0.001). MPI provided independent prognostic information in a multivariable Cox regression model adjusted for age, sex, previous MI, peak troponin, and systolic and diastolic echocardiographic parameters, with a hazard ratio of 1.24 (P=0.005) for the combined end point per each 0.1 increase in MPI.

show abstract

“…11 Longitudinal systolic (SL') and early diastolic (EL') myocardial tissue velocities, as well as longitudinal peak velocity during the pre-ejectional period (PEVL), were obtained using a 16-segments model. When a biphasic PEVL pattern was encountered, the dominant one over the other, in terms of an absolute value, was chosen for subsequent analysis.…”

Section: Echocardiographymentioning

confidence: 99%

Clinical Validity of Longitudinal Pre-Ejectional Myocardial Velocity for Identifying the Transmural Extent of Viable Myocardium Early After Reperfusion of an Infarct-Related Coronary Artery

Kim

Chang

Kim

et al. 2007

Circ J

View full text Add to dashboard Cite

Background Positive longitudinal pre-ejectional velocity (+PEVL) was recently reported to be a reliable index of myocardial recovery early after successful revascularization in myocardial infarction (MI); that is, it recognizes the transmural extent of viable myocardium. The applicability of PEVL in the real-world clinical setting for identifying the transmural extent of viable myocardium in reperfused recent MI was assessed. Methods and ResultsUsing tissue Doppler imaging, the resting basal and mid myocardial PEVLs were determined within 3 days after revascularization in 41 consecutive patients with recent MI. Infarct thickness was semiquantified using delayed gadolinium-enhanced magnetic resonance imaging (MRI) at baseline and at 6-month follow up to differentiate transmural from nontransmural MI. The proportion of segments showing the presence of +PEVL was not significantly changed as infarct thickness increased (p=0.2), with 66.2% having +PEVL even in segments involving >75% transmural infarction. Moreover, +PEVL was found in a large fraction of segments with akinesia (70.4%). Specificity and negative predictive value of +PEVL for assessing infarct nontransmurality were disappointingly low (32.0% and 26.9%, respectively). All of these results were not altered when the 6-month follow-up MRI was done. Conclusions +PEVL cannot be regarded as a reliable marker for predicting the transmural extent of viable myocardium in recent MI. (Circ J 2007; 71: 1904 -1911

show abstract

Measurement of Cardiac Time Intervals by Doppler Tissue M-Mode Imaging of the Anterior Mitral Leaflet

Cited by 63 publications

References 24 publications

The Relationship between Invasive Hemodynamic Measurements and Tissue Doppler-Derived Myocardial Velocity and Acceleration during Isovolumic Relaxation in Healthy Dogs

The Relationship between Invasive Hemodynamic Measurements and Tissue Doppler-Derived Myocardial Velocity and Acceleration during Isovolumic Relaxation in Healthy Dogs

Prognostic Value of Cardiac Time Intervals by Tissue Doppler Imaging M-Mode in Patients With Acute ST-Segment–Elevation Myocardial Infarction Treated With Primary Percutaneous Coronary Intervention

Clinical Validity of Longitudinal Pre-Ejectional Myocardial Velocity for Identifying the Transmural Extent of Viable Myocardium Early After Reperfusion of an Infarct-Related Coronary Artery

Contact Info

Product

Resources

About