目的通过检测不同孕期妇女及新生儿出生时血清中的锌值，探索锌值与新生儿出生体质量之间的关系，以及血锌值的变化规律。方法应用原子分光光度法，分别检测孕3月、6月和生产前孕妇血中及脐血中元素锌的含量，以及新生儿出生时的体质量。结果孕产妇血中的锌值随孕期的增加呈现持续下降的趋势，脐血中的锌值明显高于分娩前，孕期血锌值越高则新生儿体质量越重，且新生儿脐带血锌含量越高则出生时体质量越重。结论妇女在妊娠期对微量元素锌的需求明显提高，在孕6月前对孕妇进行血清锌含量的检测并对锌缺乏孕妇的进行早期干预，可避免锌缺乏而致的胎儿宫内发育迟缓。%Objective Maternal serum zinc levels of different pregnancy periods and neonatal serum zinc level at birth are measured to evaluate the relationship between zinc level and birth weight, and the changing law of zinc level. Method Atomic spectrophotometry is applied to measure serum zinc level in maternal blood before birth delivery and neonatal umbilical cord at birth, and the weight of neonate at birth.. Result The maternal serum zinc level presents a continuously declining trend due to the increase of pregnancy time, and the zinc level in umbilical cord is evidently higher than that of pre-birth. The higher the maternal zinc level is, the heavier of the newborn weight will be. Similarly, the higher the umbilical cord zinc level is, the heavier of the newborn weight will be. Conclusion During pregnancy women have an evidently increased demand for microelement zinc. To measure serum zinc level of less than 6-month pregnant women and carry out early intervention for those short of zinc can avoid intrauterine growth retardation arising from zinc shortage.
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