关键词: 早产儿, 维生素D, 认知水平, 孕产妇

Abstract: Objective To study the serum vitamin D levels in preterm infants and the influencing factors of the vitamin D and calcium intakes of maternal in Cangzhou. Methods The 158 preterm infants from Cangzhou People's Hospital were selected in the study,serum 25-(OH)D in preterm infants was measured by ELISA.The nutrition knowledges of pregnant women on vitamin D were investigated by using a self-designed questionnaire. Results It was high prevalence of moderately severe vitamin D deficiency in preterm infants.The proportion of vitamin D deficiency was 97.4%.It was related to the nutrition knowledge and vitamin D intakes of pregnant women.Only 6.9% of pregnant women took in the calcium with vitamin D,without the rule.Intakes of vitamin D did not meet the requirements of the Chinese Nutrition Society recommended intake of pregnant women.Conclusion Clinical staff should strengthen health education on maternal,to recognize the importance of reasonable supplement of vitamin D.

Key words: preterm infants, vitamin D, the nutrition knowledge level, maternal