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J Am Coll Cardiol, 2007; 50:1315-1323, doi:10.1016/j.jacc.2007.03.070 (Published online 14 September 2007).
© 2007 by the American College of Cardiology Foundation
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Severe Left Ventricular Dyssynchrony Is Associated With Poor Prognosis in Patients With Moderate Systolic Heart Failure Undergoing Coronary Artery Bypass Grafting

Martin Penicka, MD, PhD*,1,*, Jozef Bartunek, MD, PhD§,1, Otto Lang, MD, PhD{dagger}, Karel Medilek, MD{ddagger}, Petr Tousek, MD*, Marc Vanderheyden, MD§, Bernard De Bruyne, MD, PhD§, Michaela Maruskova, MD* and Petr Widimsky, MD, PhD*

* Cardiocenter, Department of Cardiology, Third Faculty of Medicine, Charles University, and University Hospital Kralovske Vinohrady, Prague, Czech Republic
{dagger} Department of Nuclear Medicine, Third Faculty of Medicine, Charles University, and University Hospital Kralovske Vinohrady, Prague, Czech Republic
{ddagger} Department of Cardiosurgery, Medical Faculty, Hradec Kralove, Czech Republic
§ Cardiovascular Center, OLV Hospital, Aalst, Belgium.


Figure 1
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Figure 1 Pre-CABG Dyssynchrony and Myocardial Viability in 30-Day Survivors and Nonsurvivors

Degree of the pre-CABG left ventricular dyssynchrony (left) and degree of viable myocardium (right) in patients who died versus survived during the first 30 days after CABG. CABG = coronary artery bypass grafting.

 

Figure 2
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Figure 2 Pre-CABG Dyssynchrony, Myocardial Viability, and 30-Day Mortality

Agreement between the presence (+DYS) or absence (–DYS) of severe pre-CABG left ventricular dyssynchrony (≥119 ms) (top), the absence (–viable) or presence (+ viable) of viable myocardium (<5 viable segments) (bottom) and the 30-day mortality. AUC = area under curve; CABG = coronary artery bypass graft; DYS = dyssynchrony.

 

Figure 3
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Figure 3 Accuracy of LV Dyssynchrony and Myocardial Viability to Predict Long-Term Clinical Events

Receiver-operating characteristic curves to predict clinical events occurring from day 31 after CABG to the end of the follow-up period for pre- and post-CABG left ventricular dyssynchrony and the number of dysfunctional but viable segments. Sp = specificity; Ss = sensitivity; other abbreviations as in Figure 2.

 

Figure 4
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Figure 4 Long-Term Mortality and Hospitalizations According to Degree of Post-CABG DYS and Myocardial Viability

Kaplan-Meier estimates of the time to death from any cause or hospitalization for worsening heart failure between day 31 after CABG to the end of the follow-up period in patients without post-CABG dyssynchrony (<72 ms) and with large area (≥5 segments) of viable myocardium (blue solid line), patients without post-CABG dyssynchrony (<72 ms) and with small area (<5 segments) of viable myocardium (green dotted line), patients with significant post-CABG dyssynchrony (≥72 ms) and large area (≥5 segments) of viable myocardium (red solid line), and patients with significant post-CABG dyssynchrony (≥72 ms) and small area (<5 segments) of viable myocardium (orange dashed line). Pairwise comparison between groups is shown in accompanying table. CABG = coronary artery bypass grafting; DYS = dyssynchrony.

 




 
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