Title:First Trimester Tricuspid Regurgitation: Clinical Significance
Volume: 19
Issue: 3
Author(s): Sofia Teixeira*Luís. Guedes-Martins
Affiliation:
- Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Porto 4050-313, Portugal
- Centro de Medicina
Fetal, Medicina Fetal Porto, Serviço de Obstetrícia-Centro Materno Infantil do Norte, Porto 4099-001, Portugal
Keywords:
Doppler, fetal echocardiography, tricuspid valve, tricuspid regurgitation, chromosomal abnormality, congenital heart defect.
Abstract: Tricuspid regurgitation is a cardiac valvular anomaly that consists of the return of blood
to the right atrium during systole due to incomplete valve closure. This structure can be visualized
on ultrasound between 11 and 14 weeks of gestation in most cases. Despite being a common finding,
even in healthy fetuses, the presence of tricuspid regurgitation may be associated with chromosomal
and structural abnormalities. The evaluation of tricuspid flow and the presence of regurgitation
on first-trimester ultrasound has shown promising results regarding its role in the early detection
of aneuploidies, congenital heart defects, and other adverse perinatal outcomes. This review
article aims to demonstrate the importance of tricuspid regurgitation as a secondary marker, and
consequently, significant benefits of its early detection when added to the combined first-trimester
screening. Its value will be discussed, namely its sensitivity and specificity, alone and together
with other current markers in the fetal assessment performed in the first-trimester ultrasound.