Assessing the true severity of low-gradient aortic stenosis using resting echocardiography

•Acceleration time/ejection time (AT/ET) ratio was the determinant of valve compliance in low-gradient aortic stenosis (LGAS) patients.•Indexed projected aortic valve area (AVAproj) at dobutamine stress echocardiography was determined by baseline indexed AVA and AT/ET.•The true severity of LGAS can...

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Bibliographic Details
Published in:Journal of cardiology 2021-04, Vol.77 (4), p.327-333
Main Authors: Abe, Yukio, Kitai, Takeshi, Furukawa, Atsuko, Nomura, Nanaka, Matsumura, Yoshiki, Naruko, Takahiko, Yoshiyama, Minoru
Format: Article
Language:English
Subjects:
Dobutamine stress echocardiography
Doppler echocardiography
Low-gradient aortic stenosis
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Summary:•Acceleration time/ejection time (AT/ET) ratio was the determinant of valve compliance in low-gradient aortic stenosis (LGAS) patients.•Indexed projected aortic valve area (AVAproj) at dobutamine stress echocardiography was determined by baseline indexed AVA and AT/ET.•The true severity of LGAS can be screened using resting indexed AVA and AT/ET. Dobutamine stress echocardiography (DSE) is required to determine whether low-gradient aortic stenosis (AS) with a small aortic valve area (AVA) is truly severe. The purpose of the present study was to evaluate the usefulness of ejection dynamics parameters at resting echocardiography for predicting the result of DSE performed in patients with low-gradient AS. The results of resting echocardiography and DSE performed on 51 AS patients with low mean-gradient (
ISSN:0914-5087
1876-4738
DOI:10.1016/j.jjcc.2020.07.028