骨定量超声技术在早产儿骨发育评价中应用和影响早产儿骨发育因素的研究

目的探讨定量超声(QUS)技术评价早产儿骨发育的作用及早产儿骨发育的影响因素。方法选取2009年2～7月本院NICU住院的早产儿为观察组,按2∶1比例随机选择同期出生的足月儿为对照组,用定量超声仪测量生后2d之内胫骨声波速度(SOS),同时检测出生24h内血钙、镁、磷和碱性磷酸酶,分析不同胎龄、体重、性别、母妊娠期高血压疾病及生化指标等因素对SOS值的影响,对有意义的因素进行多元回归分析。结果(1)胫骨SOS值早产儿低于足月儿;胎龄≤30周早产儿低于胎龄34～36周早产儿和足月儿,胎龄31～33周早产儿低于胎龄34～36周早产儿和足月儿;出生体重<1500g新生儿低于1500～2500g和>2500g的新生儿,P均<0.05;不同性别之间SOS值差异无统计学意义(P>0.05);早产适于胎龄儿低于早产小于胎龄儿,P<0.001;母妊娠期高血压疾病组早产儿高于非妊娠期高血压疾病组,P<0.05。(2)SOS值与胎龄(r=0.347,P<0.001)、母妊娠期高血压疾病(r=0.215,P=0.016)、宫内发育迟缓(r=0.367,P<0.001)、血钙(r=0.259,P=0.004)和血镁(r=0.234,...

The role of quantitative ultrasound in evaluating the skeletal development in preterm infants and the influence factors of bone development in prematurity

Objective To study the role of Quantitative ultrasound (QUS) which evaluate the skeletal development of preterm infants and the influence factors of bone development in prematurity. Methods We selected the preterm infants who hospitalized in the NICU from February 2009 to July 2009 as the observation group according to a ratio of 2:1 randomly selected the full-term children born in the same period as the control group. We used ultrasound bone sonometer to measure the SOS value along the mid tibia in two gro...