S-Space College of Medicine/School of Medicine (의과대학/대학원) Emergency Medicine (응급의학전공) Journal Papers (저널논문_응급의학전공)
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
- Issue Date
- Circ J. 2007 Dec;71(12):1904-11.
- Adult ; Aged ; Blood Flow Velocity/physiology ; Coronary Vessels/*physiopathology/ultrasonography ; Echocardiography, Doppler/*methods ; Female ; Humans ; Magnetic Resonance Imaging/*methods ; Male ; Middle Aged ; Myocardial Infarction/*physiopathology/*ultrasonography ; Predictive Value of Tests ; Prospective Studies ; Reproducibility of Results ; Sensitivity and Specificity ; Stroke Volume/*physiology ; Myocardial Reperfusion
- 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 RESULTS: Using 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 semi-quantified 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.
- 1346-9843 (Print)