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Updated: May 7, 2026

In vitro Assessment of Aortic Regurgitation Using Four-Dimensional Flow Magnetic Resonance Imaging
Published on: February 25, 2022
The A-dip of aortic regurgitation
Bahaa M Fadel1, Dalia Ahmed, Bader Almahdi
1King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia.
Abstract:
Careful analysis of the aortic regurgitation (AR) Doppler signal often provides important information regarding left heart hemodynamics. Here we illustrate a pattern on the AR signal, known as the A-dip that suggests the presence of elevated LVEDP.
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