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  • Title: Echocardiographic spectrum of Ebstein's anomaly of the tricuspid valve.
    Author: Farooki ZQ, Henry JG, Green EW.
    Journal: Circulation; 1976 Jan; 53(1):63-8. PubMed ID: 1244257.
    Abstract:
    Sixteen patients aged between one day to 18 years with Ebstein's malformation of the tricuspid valve were studied with ultrasound. The findings were compared with a group of 74 patients without Ebstein's malformation. Two features were considered specific for Ebstein's malformation: 1) ability to record the anterior tricuspid leaflet (ATL) farther to the left of the left sternal border than in the control group; and 2) abnormally prolonged interval between the "C" points of the tricuspid and the mitral valve echoes (McTcI). All other parameters measured were nonspecific for Ebstein's anomaly of the tricuspid valve. The sail sound was recorded in ten patients with Ebstein's malformation and occurred at the time when the anterior tricuspid leaflet was in the most posterior position. In a patient with congenital heart disease, an McTc interval greater than 0.03 sec and recording of an anterior tricuspid leaflet near the apex of the heart strongly suggest the diagnosis of Ebstein's malformation. These two criteria were not fulfilled in any patient who did not have Ebstein's malformation. Conversely, however, absence of these two features does not rule out Ebstein's anomaly of the tricuspid valve.
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