先天性心脏病的原因（The causes of congenital heart disease）.docVIP

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先天性心脏病的原因（The causes of congenital heart disease）.doc

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先天性心脏病的原因（The causes of congenital heart disease）

先天性心脏病的原因（The causes of congenital heart disease） Congenital heart disease.Txt without a line you see me online, hurry to stealth, rest assured. Im not going to mess with you. Good now but never abandon they do have cause of congenital heart disease Time of publication: 2008-06-22 Publisher: Ma Xudong (visitor: 2240) There are many reasons for congenital heart disease. There are five main factors related to congenital heart disease at present: Congenital heart disease one reason: fetal development environment factors Intrauterine viral infection is the most important cause of congenital heart disease, among which rubella virus infection is most prominent, followed by Coxsackie virus infection. Mothers suffer from rubella in the first three months of pregnancy, and the prevalence of congenital heart disease is higher in infants, including the absence of patent ductus arteriosus and stenosis of the pulmonary valve orifice. This is due to the development of fetal heart large vessels in pregnancy second to eight weeks, and at this time the uterus virus infection enough to affect the development of fetal heart. Ma Xudong, cardiovascular surgery, not included hospital ?? Others such as amniotic membrane disease, fetal compression, threatened abortion in early pregnancy, maternal malnutrition, diabetes mellitus, phenylketonuria, hypercalcemia, radiation and cytotoxic drugs in early pregnancy in the application, are the causes of fetal congenital heart disease. Congenital heart disease two causes: premature birth Premature birth is an important cause of congenital heart disease. Premature infants suffer from ventricular insufficiency and patent ductus arteriosus. The former is related to ventricular septum without sufficient time to complete development before birth. The latter is related to premature infants vascular contraction reaction after birth. Newborns born below 2500g are particularly vulnerable to congenital heart disease. ? Congenital heart disease three reasons: