Key result
Resting echo-derived elastance parameters correlated with exercise duration, and a total stiffness index of 0.8 reliably predicted impaired exercise capacity in patients with dilated cardiomyopathy.
Why the study?
Can echo-Doppler-derived indices of ventricular elastance and ventriculoarterial interaction predict exercise capacity in patients with dilated cardiomyopathy?
Population
75 subjects including 25 patients with nonischemic dilated cardiomyopathy, 25 age- and gender-matched…
Comparison
Echo-Doppler evaluation of left ventricular… vs Comparisons between DCM patients, hypertensive…
Design
Cross-sectional
Authors
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May support resting echo elastance assessment for exercise limitation in dilated cardiomyopathy; leaves open prospective validation before clinical adoption.
Cross-Sectional (n=75)
Can echo-Doppler-derived indices of ventricular elastance and ventriculoarterial interaction predict exercise capacity in patients with dilated cardiomyopathy?
Echo-derived elastance and stiffness indices can reliably predict impaired exercise capacity in patients with nonischemic dilated cardiomyopathy.
Her et al. (2009) conducted a cross-sectional in Nonischemic Dilated Cardiomyopathy (n=75). Echo-Doppler-derived elastance and ventriculoarterial interaction indices vs. Hypertensive patients and marathon runners was evaluated on Exercise capacity and duration. Resting echo-derived elastance parameters correlated with exercise duration, and a total stiffness index of 0.8 reliably predicted impaired exercise capacity in patients with dilated cardiomyopathy.
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