Abstract
In aortic stenosis (AS) symptoms usually occur during exercise and, furthermore, most Doppler-echocardiographic indices that are used for assessing AS severity are flow dependent. Changes in loading conditions and contractility may lead to alterations in the severity of lesions, good or poor ventricular contractile reserve, altered volume-dependent compliance of heart chambers, and ventricular arterial coupling. Thus, there may be a need for stress testing and imaging in this setting. Herein we represent a case report of asymptomatic patient with moderate/severe AS and with preserved left ventriculae ejection fraction at rest in whom a low-dose dobutamine stress-echocardiography enabled an accurate assessment of AS severity and gave a better understanding of the optimal time for aortic valve replacement.
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