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《世界卫生组织统计季刊》发表:1979年全世界约有2,100万名新生儿出生体重低于或等于2,500克,占该年1.2亿名新生儿的17%。所以,在全球范围内每6名新生儿中有1名是低出生体重儿,但各地低出生体重儿所占的比例并不一致。孕妇高血压、吸烟、产前感染、多次妊娠等因素与娩出低出生体重儿有关,母营养不良或不健康亦影响胎儿生长或引起早产。出生体重是新生儿能否存活的一个重要因素,低出生体重儿易发生呼吸紊乱、体
WHO Quarterly Bulletin of the World: In 1979, some 21 million newborns worldwide received less than or equal to 2,500 grams of birth weight, or 17% of 120 million newborns in that year. Therefore, one out of every six newborns worldwide has a low birth weight, but the proportion of low birth weight children in each region is not the same. Pregnant women with high blood pressure, smoking, prenatal infection, multiple pregnancies and other factors related to the delivery of low birth weight infants, malnutrition or malnutrition also affect fetal growth or premature birth. Birth weight is an important factor in the survival of newborns, low birth weight infants prone to respiratory disorders, body