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本文通过对100名妊娠早期孕妇的追踪观察发现,孕妇妊娠中、晚期的铁营养状况普遍较差,血红蛋白、红细胞计数、血浆铁蛋白的平均值均明显低于未婚女青年;红细胞游离原卟啉明显高于未婚青年;妊娠晚期的血浆铁水平和运铁蛋白饱和度较妊娠中期明显下降,红细胞游离原卟啉明显升高。膳食调查的结果表明,妊娠早、中、晚期的营养素多摄入不足,唯铁、维生素C、维生素B_1达到供给量标准。本文结合上述资料从孕前铁营养状况、孕期膳食构成和机体铁状况的动态变化等角度重点讨论了北京城区孕妇贫血的性质和原因,并提出了相应的对策。
In this paper, the follow-up of 100 pregnant women in early pregnancy found that pregnant women in the late pregnancy generally poor nutritional status of iron, hemoglobin, red blood cell count, plasma ferritin average were significantly lower than unmarried young women; erythrocyte free protoporphyrin Significantly higher than unmarried youth; late pregnancy, plasma iron levels and transferrin saturation significantly decreased compared with the second trimester of pregnancy, erythrocyte free protoporphyrin was significantly higher. Dietary survey results show that early, middle and late pregnancy, inadequate intake of nutrients, the only iron, vitamin C, vitamin B_1 to meet the supply standards. Based on the above data, this paper focuses on the characteristics and causes of anemia in pregnant women in Beijing city from the perspective of the nutritional status of pre-pregnancy iron, the dietary composition during pregnancy and the dynamic changes of body iron status. The corresponding countermeasures are also proposed.