Cleft mitral valve in transposition with intact ventricular septum
We describe two cases of an isolated cleft of the mitral valve in transposition with intact ventricular septum. The cleft is positioned leftward in the pulmonary leaflet, at about 2 o’clock, when viewed from below looking at the cardiac short axis with the right ventricle to one’s left hand. Such clefts, when seen in the Taussig-Bing malformation are also positioned leftward.
In keeping with our current knowledge of cardiac development, our cases provide further evidence that transposition with an intact ventricular septum is the end-point of the Taussig-Bing spectrum.(Accepted May 18 2004)
Key Words: Discordant ventriculo-arterial connections; Taussig-Bing malformation; trifoliate left atrioventricular valve.
c1 Correspondence to: Samuel Menahem, Murdoch Children’s Research Institute, Monash University Heart and Chest Research Institute, Royal Children’s Hospital, Flemington Road, Parkville, Vic 3052, Australia. Tel: +61 3 9345 5712; Fax: +61 3 9345 6001; E-mail: [email protected]