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通过测定50名正常早产儿血浆儿茶酚胺（CA）浓度、常用临床指标（毛细血管充盈时间（CRD、肛温、腑温）并与既往足月儿的研究结果比较，发现早产儿交感神经系统已经发育但尚不成熟，早产儿不同个体间交感神经系统活性变异较大。CA浓度与临床指标的相关分析结果进一步显示，早产儿交感神经系统特别是周围交感神经系统发育尚不成熟。强调在早产儿护理中温度管理的重要性。
By measuring plasma catecholamine (CA) concentrations in 50 normal preterm infants and comparing commonly used clinical indicators (capillary filling time (CRD, rectal temperature, and intestinal temperature) with previous full-term infants and finding that the sympathetic nervous system in preterm infants has developed But not yet mature, the variation of sympathetic nervous system activity in different individuals of premature infants is larger.The correlation analysis of CA concentration and clinical indicators further shows that premature infants sympathetic nervous system, especially peripheral sympathetic nervous system development is not yet mature. The importance of temperature management in nursing.