However, these changes were small compared to the changes in absolute strain (the change in circumferential SR did not reach statistical significance [p = 0.07] and the posterior wall radial SR barely did [p = 0.04]).
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Left ventricular strain and strain rate by 2D speckle tracking in chronic thromboembolic pulmonary hypertension before and after pulmonary thromboendarterectomy.
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0.0700
0.0700