Abstract
Mitral regurgitation (MR) is a common valve disease encountered frequently in echocardiography laboratories; correct quantification of the severity of the MR is of paramount importance for accurate prognostication and proper treatment planning. The MR spectral Doppler tracing can provide important information regarding intracardiac pressures and be a clue to the presence of various cardiovascular pathologies. MR jet velocity is essentially unrelated to the MR severity. Severity is determined by the quantity of the MR—the volume (or fraction) of blood that spills back into the LA; MR velocity is determined by the pressure gradient driving this velocity, irrespective of the volume of blood that regurgitates back into the LA. Unusual MR spectral tracing can manifest as abnormally high or abnormally low peak velocity, as well as slower rate of rise of the MR velocity. Identifying an unusual MR spectral tracing should prompt a search for its cause.
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Perk, G. (2021). What’s Wrong with This MR: Part II. In: Hemodynamics in the Echocardiography Laboratory. Springer, Cham. https://doi.org/10.1007/978-3-030-79994-6_7
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DOI: https://doi.org/10.1007/978-3-030-79994-6_7
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