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  • Title: [Malformations of the tricuspid valve associated with Fallot's tetralogy. Apropos of a series of 224 surgically treated Fallot's tetralogies].
    Author: Piot JD, Leriche H, Losay J, Touchot A, Piot C, Worms AM, Planché C, Pernot C, Binet JP.
    Journal: Arch Mal Coeur Vaiss; 1985 May; 78(5):757-61. PubMed ID: 3925919.
    Abstract:
    This study was based on 7 children aged 20 months to 13 years with tetralogy of fallot (TOF) and tricuspid valve defects. Cases of endocardial cushion defects (8 cases of atrioventricular) were excluded. Three types of tricuspid valve defect were observed: 4 tricuspid valve prolapse (with one associated mitral valve prolapse); 2 accessory tricuspid valves passing through a ventricular septal defect to prolapse in diastole under the aortic valve; 1 Ebstein anomaly. The prevalence of tricuspid valve defects associated with TOF 3 p. 100 in this series. The diagnosis can: usually be made by 2D echocardiography. Tricuspid valve prolapse (usually the septal leaflet) is visualised in the apical 4 chamber view. The passage of accessory tricuspid tissue across the VSD into the left ventricular outflow tract is visible in the parasternal long axis or subcostal long axis views. Ebstein anomaly can be demonstrated in apical 4-chamber views showing the abnormally apical site of insertion of the septal leaflet of the tricuspid valve and "atrialisation" of part of the right ventricle. Tricuspid valve defects did not pose any special surgical problems during complete repair of TOF but this series did not include any cases of tricuspid hypoplasia or parachute tricuspid valve which have been reported in the literature and which do complicate surgery. Tricuspid valve and subendocardial cushion defects should be looked for systematically in patients with TOF undergoing 2D echocardiography.
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