Myocardial velocities measured during adenosine, dobutamine and supine bicycle exercise: a tissue Doppler study in healthy volunteers

Saha, Samir K.; Brodin, Lars‐Åke; Lind, Britta; Svedenhag, Jan; Strååt, E.; Gunnes, Sigurd

doi:10.1111/j.1475-097x.2004.00563.x

Cited by 10 publications

(10 citation statements)

References 28 publications

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“…The atrial contraction is an active process, determined by the muscle strength in the atrium and is therefore less influenced by passive forces in the blood. Both PSV and A’ showed a significant increase with heart rate during the two different stress tests (Figs 2 and 4), which confirms the results from other studies (Saha et al. , 2004; Jassal et al.…”

Section: Discussionsupporting

confidence: 90%

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Differences in myocardial velocities during supine and upright exercise stress echocardiography in healthy adults

Bjällmark

Larsson

Shahgaldi

et al. 2009

Clin Physio Funct Imaging

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Summary Background: Tissue Velocity Imaging (TVI) is a method for quantitative analysis of longitudinal myocardial velocities, which can be used during exercise and pharmacological stress echocardiography. It is of interest to evaluate cardiac response to different types of stress tests and the differences between upright and supine bicycle exercise tests have not been fully investigated. Therefore, the aim of this study was to compare cardiac response during supine and upright exercise stress tests. Method: Twenty young healthy individuals underwent supine and upright stress test. The initial workload was set to 30 W and was increased every minute by a further 30 W until physical exhaustion. Tissue Doppler data from the left ventricle were acquired at the end of every workload level using a GE Vivid7 Dimension system (>200 frames s−1). In the off‐line processing, isovolumic contraction velocity (IVCV), peak systolic velocity (PSV), isovolumic relaxation velocity (IVRV), peak early diastolic velocity (E’) and peak late diastolic velocity (A’) were identified at every workload level. Result: No significant difference between the tests was found in PSV. On the contrary, E’ was shown to be significantly higher (P<0·001) during supine exercise than during upright exercise and IVRV was significantly lower (P<0·001) during supine exercise compared to upright exercise. Conclusion: Upright and supine exercise stress echocardiography give a comparable increase in measured systolic velocities and significant differences in early diastolic velocities.

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Section: Discussionsupporting

confidence: 90%

“…, 2005). These results were partly confirmed by another study reporting increased longitudinal motion of the left ventricular myocardium during physical exercise (Saha et al. , 2004).…”

Section: Introductionsupporting

confidence: 72%

Differences in myocardial velocities during supine and upright exercise stress echocardiography in healthy adults

Bjällmark

Larsson

Shahgaldi

et al. 2009

Clin Physio Funct Imaging

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“…We found that the peak velocity of systolic LV contraction was higher in the endurance athletes during exercise of moderate-to-maximal intensity, but not at rest. The highest PSV values (i.e., in the EG group during performance at VO 2max ) observed here are among the highest reported to date (Støylen et al 2003;Saha et al 2004;Bjällmark et al 2009). Furthermore, endurance athletes demonstrated an increase in PSV during exercise.…”

Section: Discussionsupporting

confidence: 67%

Enhanced systolic myocardial function in elite endurance athletes during combined arm-and-leg exercise

et al. 2010

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The aim here was to employ color tissue velocity imaging (TVI), to test the hypothesis that highly trained endurance athletes exhibit enhanced systolic function of the left ventricular (LV) myocardium both at rest and during combined arm-and-leg exercise in comparison with untrained subjects. For each of the ten elite male (EG) and ten matched control participants (CG), LV dimensions and systolic function were assessed at rest using echocardiography. Subsequently, these subjects exercised continuously on a combined arm-and-leg cycle ergometer for 3 min each at 50, 60, 70, 80, 90 and 100% of VO(2max). Oxygen uptake, heart rate, systolic blood pressure (SBP) and peak contraction systolic velocities of the LV myocardium (PSV) were recorded in the end of each level. At rest, the trained and untrained groups differed with respect to LV dimensions, but not systolic function. At 60-100% VO(2max), the EG group demonstrated both higher PSV and SBP. The observation that the EG athletes had higher PSV than CG during exercise at 60-100% VO(2max), but not at rest or at 50% of VO(2max), suggested an enhanced systolic capacity. This improvement is likely to be due to an enhanced inotropic contractility, which only becomes apparent during exercise.

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“…Therefore, myocardial deformation or strain, which more directly reflects local myocardial function, is preferable for measurement [16,17]. In our study, in the normally perfused myocardium, strain and SR did not change with adenosine stress, since adenosine has no direct inotropic influence on normal myocardium, although it has an obvious vasodilative function [18].…”

Section: Adenosine Stress Echocardiographymentioning

confidence: 95%

Assessment of ischemic myocardium by strain-rate imaging during adenosine stress echocardiography

Yao

Sun

et al. 2007

Int J Cardiovasc Imaging

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Myocardial velocities measured during adenosine, dobutamine and supine bicycle exercise: a tissue Doppler study in healthy volunteers

Cited by 10 publications

References 28 publications

Differences in myocardial velocities during supine and upright exercise stress echocardiography in healthy adults

Differences in myocardial velocities during supine and upright exercise stress echocardiography in healthy adults

Enhanced systolic myocardial function in elite endurance athletes during combined arm-and-leg exercise

Assessment of ischemic myocardium by strain-rate imaging during adenosine stress echocardiography

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