新生儿窒息非生命器官血流动力学变化的观察

STUDY ON NON-LIVING ORGANS HEMODYNAMICS IN NEONATES WITH BIRTH ASPHYXIA

应用美国Ultramark－9型彩色多普勒超声诊断仪，于1995年8月～1996年7月，对新生儿窒息非生命器官（肾、肝、脾、胃、大肠、小肠）血流动力学变化进行了有对照组的前瞻性研究.结果证实新生儿窒息后备非生命器官血液灌流量均减少，且重于生命器官，舒张期减少更明显；并发现各脏器血流速度减慢的程度与低氧血症的程度至高度正相关（γ＝0．39～O．96。P＜0．0005）。证实血流量减少是新生儿窒息各脏器损伤和功能障碍的主要原因。

Using pulse Doppler ultrasongraphy to observe the variation of blood flow velocity by measuring peak systolic flow velocity (PSFV), end diastolic flow velocity (EDFV), and temporal mean flow velocity (TMFV); the pulsatility index (PI) and resistance index (RI) on renal arteries (RA) celiac artery (CA) and superiorrmesenteric artery (SMA ) in 22 neonates with birth asphyxia. The results showed that all of the organs arteries flow velocity were decreased, especially EDFY were markedly, and the decreased grade in non-living organs were significant than in living organs, and have a significant direct correlation between the reduction of blood velocity and the severity of hypoxemia (r= 0. 93-0. 96,p＜0. 005).