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作者对57例因有呼吸困难或持续胎儿循环使用呼吸器的早产儿(平均胎龄为30.1周,平均出生体重1470g)用~(133)xe(氙)法闪烁器记录测量生后48小时内的脑血流量(CBF),并用多元逐步回归法分析观察在动脉二氧化碳分压和动脉血压变化时CBF的相应变化。通过调整呼吸器使P_aCO_e尽量保持稳定。57例中38例颅内超声一直正常的早产儿,其CBF-CO_2反应性在生后第一天(11.2～11.8％/KP_aP_cO_2)明显低于第二天
The authors measured 57 premature infants (mean gestational age 30.1 weeks, mean birth weight 1470 g) with a ~ (133) xe (xenon) scintillator recording within 48 hours after birth due to respiratory distress or persistent fetal circulation Of cerebral blood flow (CBF), and using multivariate stepwise regression analysis of changes in arterial carbon dioxide partial pressure and arterial blood pressure changes in the corresponding CBF. Keep P_aCO_e as stable as possible by adjusting respirator. Among the 57 cases, 38 cases of preterm infants with normal intracranial ultrasound had lower CBF-CO 2 reactivity on the first day after birth (11.2-11.8% / KP_aP_cO_2) than the second day