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Reversible, severe mitral regurgitation in thyrotoxic Graves’ disease


Mitral valve prolapse is a common finding in Graves’ disease. However, severe mitral regurgitation (MR) is a relatively uncommon manifestation of Graves’ disease. We report a case of a 32-year-old woman with toxic Graves’ disease and MR. The echocardiogram was suggestive of severe MR with biventricular failure, severe enough to be considered for mitral valve replacement. With medical control of the thyrotoxic state, a repeat echocardiogram revealed only trace MR, with normal left ventricular function. The timely management of the thyrotoxic state in this patient with Graves’ disease and moderate to severe MR possibly related to myxomatous degeneration, averted the need for mitral valve replacement.

  • hyperthyroidism
  • thyrotoxicosis
  • valvar diseases

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