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Mitral Valve Regurgitation: Paradoxical Behavior of Dobutamine Stress Cardiac Magnetic Resonance Imaging
Author(s) -
Fernandes Andre Mauricio S.,
Rathi Vikas K.,
Biederman Robert W. W.,
Andrade Dafne C.,
Borges Igor C.
Publication year - 2012
Publication title -
echocardiography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 62
eISSN - 1540-8175
pISSN - 0742-2822
DOI - 10.1111/j.1540-8175.2012.01713.x
Subject(s) - dobutamine , provocation test , cardiology , medicine , mitral regurgitation , magnetic resonance imaging , regurgitation (circulation) , radiology , hemodynamics , pathology , alternative medicine
A 62‐year‐old woman with mitral regurgitation (MR) underwent cardiac magnetic resonance (CMR) and dobutamine stress CMR imaging, a widely used method to analyze left ventricular function and MR volumes. During dobutamine provocation at escalating doses, the left ventricular end‐diastolic diameter (LVEDD) decreased, with a corresponding decrease in MR. At peak dobutamine dose, the LVEDD further decreased, with near complete relief of MR. Upon cessation of dobutamine provocation, the MR returned to predobutamine level. This case thereby demonstrates that MR may be reversible under certain conditions.