Transvaginal Examination of the Foetal Heart
Congenital heart disease is one of the most common forms of congenital malformation affecting approximately 8 per 1000 live births. Foetal echocardiography has become well established as a means of examining cardiac structures in utero, and as a result most forms of structural cardiac lesion have now been detected during foetal life . However, the antenatal diagnosis of congenital heart disease is rarely made before 16 weeks of gestation using a transabdominal approach. The development of transvaginal ultrasonography has enabled more detailed imaging of foetal anatomy possible in the first trimester of pregnancy . Thus, using high-frequency transducers, it has become possible to detect foetal malformations earlier in pregnancy [4, 12, 13, 17].
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