Prenatal Diagnosis of Isolated Tricuspid Valve Atresia

Abstract

Objective. To describe the prenatal features of fetal tricuspid atresia. Methods. Four cases of fetal tricuspid atresia were prenatally diagnosed, sonographically described, and followed. Results. On the basis of this small series, the key findings for diagnosis included the demonstration of no patent tricuspid valve on the 4-chamber view, no flow across the tricuspid valve on pulsed or color Doppler flow mapping, small right ventricles, and associated interventricular septal defects. Increased nuchal translucency thickness may give the first clue leading to follow-up scans, resulting in a definite diagnosis. Conclusions. Tricuspid atresia can be readily diagnosed prenatally. The key findings and differential diagnoses are provided.

Prenatal Diagnosis of Dextrocardia with Complex Congenital Heart Disease Using Fetal Intelligent Navigation Echocardiography (FINE) and a Literature Review

“…Thus, in the setting of concordant ventriculoarterial connection, pulmonary stenosis or atresia is frequently found, especially when the ventricular septal defect is small, and the aorta is either normal, or slightly larger than normal [53]. However, in cases of ventriculoarterial discordance (found in the case herein), hypoplasia of the aortic arch, coarctation, or even aortic atresia may occur, depending upon the size of the ventricular septal defect [53,54]. This is because in the setting of tricuspid atresia and D-transposition of the great vessels, an increased portion of blood flows into the pulmonary artery and through the ductus arteriosus into the descending aorta.…”

Prenatal sonographic findings of prominent fetal tricuspid annulus: A case report

“…Dilatation and flattening of the tricuspid annulus compromises tricuspid valve coaptation, and may be associated with tricuspid regurgitation [ 4 , 5 ]. Overall, congenital structural anomalies of the fetal tricuspid valve are rare, and include Ebstein's anomaly, tricuspid atresia, partial absence, unguarded tricuspid orifice (absent leaflets) cleft, double orifice, bicuspid valve, and Uhl anomaly (absence of the right ventricular myocardium with an apposing endocardium and epicardium) [6] , [7] , [8] , [9] , [10] , [11] , [12] , [13] , [14] , [15] . We present an unusual case in which a prominent circular structure was noted in immediate proximity to, and slightly above the periphery of the fetal tricuspid valve at 31 weeks’ gestation.…”