Key result
Surgical excision of an accessory mitral valve in an asymptomatic 10-year-old boy successfully eliminated a severe left ventricular outflow tract obstruction, with no residual gradient at 6 months.
Case Report (n=1)
Early surgical resection of an accessory mitral valve in an asymptomatic patient with severe LVOT obstruction is safe and effectively eliminates the pressure gradient without compromising native mitral valve function.
May warrant surgical evaluation in asymptomatic severe LVOT obstruction; case report leaves open standardized management approaches.
Accessory mitral valve (AMV) is an extremely uncommon congenital cardiac anomaly and it is a rare cause of left ventricular outflow tract (LVOT) obstruction. Identification of asymptomatic patients with LVOT obstruction is uncommon since the symptoms usually become manifest when the gradient across the LVOT rises. We describe a rare case of asymptomatic AMV with severe LVOT obstruction in a 10-year old child with no other congenital or acquired cardiac defects who successful underwent surgery. This case emphasizes the importance of early surgical indication also in absence of symptoms when significant LVOT obstruction occurs.
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Rao et al. (2013) conducted a case report in Accessory mitral valve with severe left ventricular outflow tract obstruction (n=1). Surgical excision of accessory mitral valve was evaluated on Left ventricular outflow tract pressure gradient. Surgical excision of an accessory mitral valve in an asymptomatic 10-year-old boy successfully eliminated a severe left ventricular outflow tract obstruction, with no residual gradient at 6 months.
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