Macdonald P D, Yu V Y
Newborn Services, Monash Medical Centre, Clayton, Victoria, Australia.
Arch Dis Child. 1992 Oct;67(10 Spec No):1166-8. doi: 10.1136/adc.67.10_spec_no.1166.
Preductal and postductal oxygen saturation were compared in 20 ventilated preterm infants with hyaline membrane disease to establish the frequency of right to left shunting and to assess the accuracy of postductus arteriosus blood gas sampling. One hundred and thirty eight comparisons were made and the frequency of right to left shunting was 17% (95% confidence interval 12 to 25%). Shunting episodes with possible preductal hyperoxia occurred far less commonly on a maximum of 5% of occasions. The findings in infants under 1000 g and of 24-28 weeks' gestation were not significantly different from larger or more mature infants. Shunting occurred significantly more frequently in very ill infants who subsequently died as a result of respiratory disease.
对20例患有透明膜病的机械通气早产儿的导管前和导管后血氧饱和度进行了比较，以确定右向左分流的频率，并评估动脉导管后血气采样的准确性。共进行了138次比较，右向左分流的频率为17%（95%置信区间为12%至25%）。导管前可能出现高氧血症的分流情况极为罕见，最多占5%。体重不足1000克、孕周为24 - 28周的婴儿的研究结果与较大或更成熟的婴儿无显著差异。在因呼吸系统疾病随后死亡的重病婴儿中，分流发生的频率明显更高。
