彩色多普勒超声测定窒息新生儿肠系膜上动脉、腹腔动脉血流

目的了解窒息后新生儿胃肠血流灌注动态变化。方法应用多普勒超声血流显像技术，对２２例（３０例次）窒息后新生儿于生后１、３、７天进行了肠系膜上动脉（ＳＭＡ）和腹腔动脉（ＣＡ）的血流各参数测定，并以３０例正常足月新生儿作为对照。结果窒息组患儿生后第１天、第３天ＳＭＡ、ＣＡ血流速度各参数较对照组低（Ｐ＜０．０５），并且较本组第７天各参数亦低（Ｐ＜０．０５）。ＳＭＡ血流参数的改变较ＣＡ明显。结论围生期窒息后新生儿胃肠道的血流存在低灌注现象，可能为窒息后新生儿易罹患急性胃粘膜损伤、坏死性小肠结肠炎的病理生理学基础。

Assessment of blood flow of coelia artery and superior mesentric artery by colour Doppler sonography in neonates with birth asphyxia

Objective To elucidate the hemodynamic changes in gut blood perfusion of newborn infants with birth asphyxia. Methods The blood flow parameters of superior mesentric artery (SAM) and coelia artery (CA) in 22 asphyxiated neonates and 30 healthy full term infants were measured on the first day, the third day and the seventh day of life by using colour Doppler sonography. Results The blood flow velocities were decreased in SMA and CA of asphyxiated group on the first and the third day compared with those of healthy infants, but they relurned normal levels on the seventh day of life. The change was more significant in SMA than in CA. Conclusion Post asphyxiated hypoperfusion of gut blood flow could be considered as a pathophysiologic basis of susceptibility of asphyxiated infants to acute damage of gastric mucosa and necrotizing enterocolitis.