Department of Neonatology, Sisli Etfal Children Hospital, Istanbul, Turkey.
Tohoku J Exp Med. 2011 Aug;224(4):273-9. doi: 10.1620/tjem.224.273.
The oxygen support during neonatal resuscitation is not completely defined by evidence-based science. We, therefore, aimed to determine the oxygen saturation (SpO(2)) levels within the first 15 minutes of life and to evaluate the effect of delivery routes, gender and measurement sites on the mean time to reach preductal and postductal SpO(2) levels of 90% among healthy term neonates. The sensors were placed at the right hand for preductally and the left hand for postductally SpO(2) measurements. In this prospective observational study, 141 healthy term neonates were included. Seventy-one (50.3%) of the babies were female, and 77 (54.6%) were delivered by caesarean section. Mean gestational age was 38.8 ± 1.1 weeks and mean birth weight was 3,082 ± 425.7 g. Overall, it took 7.5 ± 2.8 and 9.5 ± 3.2 min to reach oxygen saturation levels ≥ 90% preductally and postductally, respectively. The lengths of time to reach ≥ 90% preductal and postductal SpO(2) levels were 6.9 ± 2.8 and 8.4 ± 3.2 min for vaginal delivery and 8.0 ± 2.8 and 10.4 ± 2.9 min for caesarean section, respectively. Thus, the time to reach SpO(2) levels ≥ 90% was prolonged in the postductal measurements and in the neonates born by caesarean section. Gender was found to have no effect on duration to reach 90% SpO(2) levels at both preductal and postductal measurements. The measurement site and the type of delivery must be taken into consideration when oxygen saturation was measured in term healthy newborn in delivery room immediately after birth.
新生儿复苏过程中的氧支持并未完全被循证医学所定义。因此，我们旨在确定生命最初 15 分钟内的氧饱和度（SpO₂）水平，并评估分娩方式、性别和测量部位对健康足月新生儿达到导管前和导管后 SpO₂水平 90%的平均时间的影响。传感器分别放置于右手用于导管前 SpO₂测量，左手用于导管后 SpO₂测量。在这项前瞻性观察性研究中，纳入了 141 例健康足月新生儿。其中 71 例（50.3%）为女性，77 例（54.6%）为剖宫产分娩。平均胎龄为 38.8±1.1 周，平均出生体重为 3082±425.7g。总体而言，导管前 SpO₂达到≥90%的平均时间为 7.5±2.8 分钟，导管后 SpO₂达到≥90%的平均时间为 9.5±3.2 分钟。阴道分娩达到导管前和导管后 SpO₂≥90%的时间分别为 6.9±2.8 分钟和 8.4±3.2 分钟，剖宫产分别为 8.0±2.8 分钟和 10.4±2.9 分钟。因此，导管后测量和剖宫产分娩的新生儿达到 SpO₂水平≥90%的时间延长。性别对导管前和导管后测量达到 90%SpO₂水平的时间均无影响。在出生后立即在产房对健康足月新生儿进行氧饱和度测量时，必须考虑测量部位和分娩方式。
