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J Am Coll Cardiol, 2007; 49:1715-1721, doi:10.1016/j.jacc.2006.12.047 (Published online 4 April 2007).
© 2007 by the American College of Cardiology Foundation
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Early Prediction of Infarct Size by Strain Doppler Echocardiography After Coronary Reperfusion

Trond Vartdal, MD*,1, Harald Brunvand, MD, PhD*, Eirik Pettersen, MD*,2, Hans-Jørgen Smith, MD, PhD{dagger}, Erik Lyseggen, MD, PhD*,1, Thomas Helle-Valle, MD*,1, Helge Skulstad, MD, PhD*, Halfdan Ihlen, MD, PhD* and Thor Edvardsen, MD, PhD*,*

* Department of Cardiology, Rikshospitalet University Hospital, University of Oslo, Oslo, Norway
{dagger} Department of Radiology, Rikshospitalet University Hospital, University of Oslo, Oslo, Norway.


Figure 1
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  		Figure 1 Example of Strain Curves in Infarcted and Remote Areas

Myocardial strain assessed in the acute phase compared with the myocardial scarring 9 months later (middle panel). At left, dyskinesia is shown in the infarcted area with systolic lengthening of the myocardium, followed by postsystolic shortening. A normal strain curve from the noninfarcted remote area with systolic shortening and diastolic lengthening is shown at right. Arrows indicate the peak negative strain values. MRI = magnetic resonance imaging.

 

Figure 2
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  		Figure 2 Transmural Extent of Infarction Measured by Strain

The transmural extent of delayed enhancement in myocardial segment is inversely related to a decrease in absolute strain values.

 

Figure 3
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  		Figure 3 Correlation Between the Global Peak Negative Strain and MRI

The correlation between the global peak negative strain value in each patient and infarct size by magnetic resonance imaging (MRI) calculated as percentage of total volume is shown.

 




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Copyright © 2007 by the American College of Cardiology Foundation.