Key result
A rare congenital trileaflet mitral valve can mimic hypertrophic cardiomyopathy and naturally progresses to severe mitral regurgitation over 13 years.
Why the study?
With only nine published reports globally, the health implications and disease associations of trileaflet mitral valves remain uncertain.
Case Report (n=1)
No
This case report highlights trileaflet mitral valve as a rare but important differential diagnosis for non-classical intracavitary gradients in suspected hypertrophic cardiomyopathy.
Alerts clinicians to trileaflet mitral valve mimicking hypertrophic cardiomyopathy; leaves open larger studies on prevalence and management.
There are nine published reports of trileaflet mitral valves globally. As such their implication on health outcomes and associations with other disease is uncertain. This case describes a 62-year-old man presenting with exertional dyspnoea and hypertension. It describes an early misdiagnosis of hypertrophic cardiomyopathy and highlights that clinicians should be alerted in cases of very high left ventricular outflow gradients in the presence of eccentric mitral regurgitation (MR). Here the MR was caused by a rare congenital deformity whereby a deep cleft in the posterior leaflet resulted in a tricuspid appearance. We present the natural disease course of a trileaflet mitral valve and without intervention over 13 years from symptom onset to the development of severe MR.
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Barker et al. (2019) conducted a case report in Trileaflet mitral valve (n=1). Trileaflet mitral valve was evaluated on Development of severe mitral regurgitation. A rare congenital trileaflet mitral valve can mimic hypertrophic cardiomyopathy and naturally progresses to severe mitral regurgitation over 13 years.
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