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据报道,我国儿童出生缺陷率在10‰～25‰之间,也就是说,我国每年大约出生30万～40万有明显出生缺陷的孩子。如果通过仪器筛查,每年出生缺陷儿可达55万～60万左右。其中,先天性心脏病占出生缺陷儿的22.7%,是造成5岁以下儿童死亡的主要原因。由于先天性心脏病对婴幼儿的危害较大,近年来已引起世界各国医学界的普遍重视,对先天性心脏病的研究也取得了可喜的成果。我国计生委从1999年开始,在全国逐步推广实施出生缺陷干预工程。目前已知先天性心脏病的发生主要与下述因素有关。一、染色体异常和单基因突变在正常人的细胞中有23对染色体,每对染色体中有一个是来自父亲,另一个是来自母亲。在23对染色体中,有22对常染色体,
It is reported that the birth defect rate of children in China is between 10 ‰ ~ 25 ‰, that is to say, about 300,000 to 400,000 children born in China each year have obvious birth defects. If you pass the instrument screening, birth defects per year up to 550,000 to 600,000 or so. Among them, congenital heart disease accounted for 22.7% of children born defective, is the main cause of death of children under 5 years old. Congenital heart disease is more harmful to infants and young children. In recent years, it has drawn universal attention from medical circles all over the world. The research on congenital heart disease has also achieved gratifying results. Since 1999, China’s Family Planning Commission has gradually popularized and implemented birth defect intervention projects nationwide. It is known that congenital heart disease is mainly related to the following factors. First, chromosomal abnormalities and single-gene mutations in normal human cells have 23 pairs of chromosomes, each chromosome of one from the father and the other from the mother. Of 23 pairs of chromosomes, 22 pairs of autosomes,