[Transvaginal echocardiography in the early diagnosis of congenital heart defects in the human fetus].

Transvaginal echocardiography makes it possible to diagnose serious congenital heart disease already during the first trimester of pregnancy. The authors present their experience with this examination method in pregnant women with a high risk of foetal cardiopathies and in women whose foetus is affected by another serious organ anomaly. The authors evaluate the successful visualization of the cardiac anatomy in different projections in relation to foetal age. They present the diagnosis of a serious inborn heart disease detected during the 15th week of gestation.