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Reversal of Intraventricular Flow Propagation During Isovolumic Relaxation: A Marker of Anterior Wall Dysfunction
| العنوان: | Reversal of Intraventricular Flow Propagation During Isovolumic Relaxation: A Marker of Anterior Wall Dysfunction |
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| المؤلفون: | Edvardsen, T., Rodevand, O., Aakhus, S., Bjornerheim, R., Ihlen, H. |
| المصدر: | Journal of the American Society of Echocardiography; October 1999, Vol. 12 Issue: 10 p801-810, 10p |
| مستخلص: | Background: Myocardial infarction induces left ventricular (LV) wall motion abnormalities during isovolumic relaxation (IVR) and may potentially alter intraventricular flow during this period. This study evaluated whether 2-dimensional color Doppler measurements of intraventricular flow during IVR were able to identify LV dysfunction caused by coronary artery disease. Methods: Patients with single-vessel coronary artery disease and posterior wall infarction (21 patients) or anterior wall infarction (27 patients) were included. Eighteen healthy persons served as a control group. LV function was examined by 2-dimensional echocardiography, 2-dimensional color Doppler, and pulsed Doppler techniques. Results: All normal persons (23.6 +/- 10.9 cm/s) and patients with posterior infarction (19.6 +/- 9.3 cm/s) had flow propagation towards LV apex during IVR. Patients with anterior wall infarction had reversed flow direction (-12.2 +/- 8.7 cm/s, P < .001). The echocardiographic wall motion score index of the 4 apical segments correlated well with flow velocities (r = -0.78, P < .001). Conclusion: Reversed flow propagation during IVR may become a sensitive clinical marker of regional ischemia. (J Am Soc Echocardiogr 1999;12:801-10.) |
| قاعدة البيانات: | Supplemental Index |
| تدمد: | 08947317 10976795 |
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| DOI: | 10.1016/S0894-7317(99)70184-7 |