OBJECTIVES: We tested the hypothesis that the tissue Doppler imaging (TDI)-derived positive preejection velocity (+VIC) can predict the recovery of contractile function after revascularization in patients with a recent myocardial infarction. BACKGROUND: In experimental studies, the presence and extent of TDI-derived +VIC correlated with the extent of viable myocardium. METHODS: Forty-three patients with a large myocardial infarction and an occluded left anterior descending (n = 38) or dominant right coronary (n = 5) artery were selected. The median duration of occlusion was 24 h. Longitudinal myocardial velocities were recorded at rest by pulsed-wave TDI echocardiography 6 ± 2 h after revascularization. Functional recovery was defined as an increase in segmental chordal shortening ≥10% at three-month follow-up left ventricular angiogram as compared with baseline. RESULTS A good quality TDI signal was obtained in 309 of 324 analyzed segments (95.4%). Severe dysfunction was present in 198 segments of which 126 (64%) showed recovery at three-month follow-up. Sampling of all dysfunctional segments lasted 11 ± 4 min per patient. Sensitivity, specificity, and accuracy of the +VIC to predict segmental recovery were 91%, 71%, and 84%, respectively. The percentage of segments that were dysfunctional at angiography but showed a +VIC correlated with improvement of both global left ventricular ejection fraction (r = 0.60, p = 0.001) and wall motion score index (r = -0.78, p < 0.0001) at follow-up. CONCLUSIONS: Assessment of +VIC by pulsed-wave TDI is a simple and accurate method that predicts recovery of contractile function after revascularization in patients with a recent myocardial infarction. © 2004 by the American College of Cardiology Foundation.

Tissue Doppler Imaging Predicts Recovery of Left Ventricular Function after Recanalization of an Occluded Coronary Artery / Penicka, M; Bartunek, J; Wijns, W; De Wolf, I; Heyndrickx, Gr; De Raedt, H; Barbato, Emanuele; De Bruyne, B.. - In: JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY. - ISSN 0735-1097. - 43:1(2004), pp. 85-91. [10.1016/j.jacc.2003.07.034]

Tissue Doppler Imaging Predicts Recovery of Left Ventricular Function after Recanalization of an Occluded Coronary Artery

BARBATO, EMANUELE;
2004

Abstract

OBJECTIVES: We tested the hypothesis that the tissue Doppler imaging (TDI)-derived positive preejection velocity (+VIC) can predict the recovery of contractile function after revascularization in patients with a recent myocardial infarction. BACKGROUND: In experimental studies, the presence and extent of TDI-derived +VIC correlated with the extent of viable myocardium. METHODS: Forty-three patients with a large myocardial infarction and an occluded left anterior descending (n = 38) or dominant right coronary (n = 5) artery were selected. The median duration of occlusion was 24 h. Longitudinal myocardial velocities were recorded at rest by pulsed-wave TDI echocardiography 6 ± 2 h after revascularization. Functional recovery was defined as an increase in segmental chordal shortening ≥10% at three-month follow-up left ventricular angiogram as compared with baseline. RESULTS A good quality TDI signal was obtained in 309 of 324 analyzed segments (95.4%). Severe dysfunction was present in 198 segments of which 126 (64%) showed recovery at three-month follow-up. Sampling of all dysfunctional segments lasted 11 ± 4 min per patient. Sensitivity, specificity, and accuracy of the +VIC to predict segmental recovery were 91%, 71%, and 84%, respectively. The percentage of segments that were dysfunctional at angiography but showed a +VIC correlated with improvement of both global left ventricular ejection fraction (r = 0.60, p = 0.001) and wall motion score index (r = -0.78, p < 0.0001) at follow-up. CONCLUSIONS: Assessment of +VIC by pulsed-wave TDI is a simple and accurate method that predicts recovery of contractile function after revascularization in patients with a recent myocardial infarction. © 2004 by the American College of Cardiology Foundation.
2004
Tissue Doppler Imaging Predicts Recovery of Left Ventricular Function after Recanalization of an Occluded Coronary Artery / Penicka, M; Bartunek, J; Wijns, W; De Wolf, I; Heyndrickx, Gr; De Raedt, H; Barbato, Emanuele; De Bruyne, B.. - In: JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY. - ISSN 0735-1097. - 43:1(2004), pp. 85-91. [10.1016/j.jacc.2003.07.034]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/648922
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