Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography
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J Am Soc Echocardiogr · Oct 2006
Randomized Controlled Trial Comparative StudyTransthoracic coronary flow velocity reserve assessment: comparison between adenosine and dobutamine.
We sought to compare coronary flow velocity reserve (CFVR) with adenosine and dobutamine in patients scheduled for noninvasive evaluation of coronary artery disease. ⋯ TTE CFVR with dobutamine is comparable to CFVR with adenosine in patients with a wide range of LAD diseases. Dobutamine could be a good alternative to adenosine for TTE CFVR assessment, particularly in patients with a contraindication to adenosine or scheduled for DSE.
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J Am Soc Echocardiogr · Oct 2006
Controlled Clinical TrialAcute improvement in myocardial function assessed by myocardial strain and strain rate after aortic valve replacement for aortic stenosis.
We investigated whether Doppler tissue imaging (tissue velocity, strain, and strain rate) could be useful to detect subtle left ventricular (LV) dysfunction in patients with aortic stenosis and changes in regional myocardial function after aortic valve replacement (AVR). ⋯ Strain and strain rate parameters seemed to relate to LV function and aortic stenosis severity. Further, they seemed to be superior to tissue velocity and conventional echocardiography in detecting subtle changes in myocardial function after AVR before LV mass and LV function showed improvement.