头皮血肿新生儿大脑中动脉血流动力学的超声影像学分析

Study on hemodynamics of middle cerebral artery in newborn infants with scalp hematoma

目的探讨新生儿头皮血肿对大脑中动脉血流动力学的影响。方法采用飞利浦公司的Philips iU22彩超仪测量55例头皮血肿新生儿及30例正常新生儿大脑中动脉的收缩期峰值流速、舒张末期血流速度及阻力指数,比较两组间各参数;分析头皮血肿侧大脑中动脉阻力指数与头皮血肿深度的相关关系。结果头皮血肿新生儿大脑中动脉收缩期峰值流速降低,舒张末期流速降低,阻力指数升高,与正常儿童组比较,有统计学差异(P<0.05);头皮血肿侧大脑中动脉的阻力指数与头皮血肿厚度呈正相关关系(r=0.4,P=0.042)。结论头皮血肿新生儿大脑中动脉血流动力学发生显著改变,预示同时存在其它并发症的可能。

Objective： probe the effect of scalp hematoma on hemodynamics of middle cerebral artery in newborn infants. Methods： Measuring the systolic peak blood velocity （Vs） and the diastolic blood velocity （Ve） and resistent index （RI） of the middle cerebral artery in 55 newborn infants with scalp hematoma and 30 normal newborn infants by Transcranial Doppler （ TCD）, All parameters were compared between the two groups. The correlation between the RI of the middle cerebral artery and depth of scalp hematoma was analyzed. Results ： The Vs and Ve is decreasing, the RI is increasing, there is a significant difference between the group of newborn infants with scalp hematoma and the group of normal newborn infants （P 〈 0.05） ; There was positive relation between the RI of the middle cerebral artery and depth of scalp hematoma. Conclusion： The hemodynamics of middle cerebral artery in newborn infants with scalp hematoma are changed, which implies that some complications maybe exist in newborn infants with scalp hematoma.