학술논문
The clinical significance of the incorporation of tissue Doppler imaging into low-dose Dobutamine stress echocardiography in patients with aortic stenosis prior to Transcatheter aortic valve implantation
Document Type
article
Author
Source
BMC Cardiovascular Disorders, Vol 20, Iss 1, Pp 1-6 (2020)
Subject
Language
English
ISSN
1471-2261
Abstract
Abstract Background Low-dose dobutamine stress echocardiography (DSE) is indicated in patients with low flow (stroke volume index [SVi] 20% increase in SVi) and severity grade of AS. Severe AS is defined by a mean pressure gradient of 40 mmHg occurring at any time during the test when aortic valve area remains