Why the study?
What are the key prenatal sonographic features of fetal tricuspid atresia?
What are the key prenatal sonographic features of fetal tricuspid atresia?
Fetal tricuspid atresia can be prenatally diagnosed using key sonographic findings such as the absence of a patent tricuspid valve and flow, along with a small right ventricle and VSD.
May aid prenatal detection of tricuspid atresia; leaves open validation in prospective series before changing practice.
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.
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Tongsong et al. (2004) studied this question.
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