Fetal Congenital Heart Disease Screening The current rate of fetal congenital heart disease diagnosis is gradually increasing with the improvement of medical technology. Many pregnant women are particularly concerned about their fetus’ heart problems. There are questions about whether fetal heart disease can be detected and when fetal heart tests can be performed. The development of the fetal heart begins in the second week, when the primitive heart begins to emerge, called the primitive heart tube; in the fifth week, the atrial septum is formed; in the sixth week, the heart begins to divide into ventricles and beat regularly; in the seventh week, the embryonic heart is divided into the left atrium and the right ventricle; in the eighth week, the ventricular septum is formed; in the ninth to tenth weeks, unique valves are formed at the atrial and ventricular outlets are formed, ensuring that blood flows in only one direction and does not reflux. In the 17th week, fetal heart development is complete. There are many ways to detect fetal heart abnormalities, and most of the fetal congenital heart diseases can be detected, so if you follow the process of maternity checkups during pregnancy, you will not miss the diagnosis. To detect fetal congenital heart, there are the following methods: 1. NT: also on the nuchal translucency. The test is performed at 11-13+6 weeks. If the nt thickens, it suggests two possibilities, one is chromosomal abnormality and the other is cardiac abnormality. If the nt thickens, the fetal heart must be detected well later. 2.Pregnancy fetal system ultrasound (also called macroscopic ultrasound): can systematically detect all organs and systems of the fetus, including the fetal heart. 3.Fetal heart ultrasound: it is specially for checking the fetal heart during pregnancy and is done at 24-28 weeks. Some hospitals with higher technology can perform fetal heart examination at 16-20 weeks. The more common fetal heart anomalies: ventricular septal defect; atrial septal defect; endocardial cushion defect; tricuspid valve downshift malformation; hypoplastic left heart syndrome; tetralogy of Fallot; transposition of the great arteries; right ventricular double outlet; permanent arterial trunk; permanent left superior vena cava; strong intraventricular light spot; large oval foramen; small oval foramen with distorted arterial duct; right aortic arch; aortic arch narrowing; tricuspid regurgitation Key notes. 1, the majority of fetal congenital heart disease can be detected by good maternal examination during pregnancy 2, when encountering abnormal heart examination, do not be nervous, normal treatment can be, regular review. 3, fetal heart abnormalities and fetal congenital heart disease is not a concept, the abnormalities may return to normal, so pay attention to the regular review of the abnormalities encountered, and do a good job of confirming the diagnosis of the disease.