Mechanical Dyssynchrony Assessed by Tissue Doppler Imaging Is a Powerful Predictor of Mortality in Congestive Heart Failure With Normal QRS Duration
Goo-Yeong Cho, MD*,*,
Jae-Kwan Song, MD, FACC
,
Woo-Jung Park, MD*,
Sung-Woo Han, MD*,
Seung-Hyuk Choi, MD*,
Young-Cheoul Doo, MD*,
Dong-Jin Oh, MD* and
Yung Lee, MD*
* Division of Cardiology, Hangang Sacred Heart Hospital, University of Hallym, Seoul, Korea
Division of Cardiology, Asan Medical Center, University of Ulsan, Seoul, Korea

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Figure 2 Receiver-operating characteristic curve to determine the optimal cutoff value of the standard deviation of the time to peak systolic point from R-wave on electrocardiogram (Ts-SD). (A) and the maximal temporal difference of Ts (Ts-diff). (B) for predicting clinical events. AUC = area under the curve.
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Figure 3 Clinical event-free survival (top) and mortality-free survival (bottom) by Kaplan-Meier analysis. Patients with time interval from R-wave to peak systolic tissue velocity (Ts)-SD >37 ms were expressed in dashed lines and those with Ts-SD 37 ms in solid line. CI = confidence interval.
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Figure 4 Clinical event-free survival (top) and mortality-free survival (bottom) by Kaplan-Meier analysis. Patients with maximal temporal difference of time to peak systolic point from R-wave on electrocardiogram (Ts-diff) >91 ms were expressed in a dashed line and those with Ts-diff 91 ms in a solid line. CI = confidence interval.
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Copyright © 2005 by the American College of Cardiology Foundation.