This 2019 focused update to the American Heart Association neonatal resuscitation guidelines is based on 2 evidence reviews recently completed under the direction of the International Liaison Committee on Resuscitation Neonatal Life Support Task Force. The International Liaison Committee on Resuscitation Expert Systematic Reviewer and content experts performed comprehensive reviews of the scientific literature on the appropriate initial oxygen concentration for use during neonatal resuscitation in 2 groups: term and late-preterm newborns (≥35 weeks of gestation) and preterm newborns (<35 weeks of gestation). This article summarizes those evidence reviews and presents recommendations. The recommendations for neonatal resuscitation are as follows: In term and late-preterm newborns (≥35 weeks of gestation) receiving respiratory support at birth, the initial use of 21% oxygen is reasonable. One hundred percent oxygen should not be used to initiate resuscitation because it is associated with excess mortality. In preterm newborns (<35 weeks of gestation) receiving respiratory support at birth, it may be reasonable to begin with 21% to 30% oxygen and to base subsequent oxygen titration on oxygen saturation targets. These guidelines require no change in the Neonatal Resuscitation Algorithm–2015 Update.

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2019年美国心脏协会专注于新生儿复苏：《美国心脏协会心肺复苏和紧急心血管护理指南》的更新。

2019年重点更新的美国心脏协会新生儿复苏指南基于最近在国际复苏新生儿生命支持小组特别委员会指导下完成的2项证据审查。国际复苏委员会联络专家系统的审查员和内容专家对新生儿复苏期间使用的适当初始氧气浓度的科学文献进行了全面审查，分为两组：足月和早产儿（妊娠≥35周）和早产儿（小于35周的妊娠）。本文总结了这些证据审查并提出了建议。新生儿复苏的建议如下：足月和早产儿（妊娠≥35周）在出生时接受呼吸支持，最初使用21％的氧气是合理的。不应使用100％的氧气来进行复苏，因为这会导致过度的死亡率。对于在出生时获得呼吸支持的早产新生儿（妊娠<35周），从21％到30％的氧气开始，然后根据氧气饱和度目标确定氧的含量是合理的。这些准则不要求对新生儿复苏算法– 2015更新进行任何更改。