​最后一句有没有错误？

新生儿复苏用药：

Epinephrine can be delivered via intravenous or endotracheal administration. IV access is the most effective and predictable means of delivery, though often endotracheal access is faster than IV access in the newborn. Epinephrine used in neonatal resuscitation should be the 1:10,000 concentration.IV dosing: 0.1–0.3 mL/kg of 1:10,000 epinephrine (0.01–0.03 mg/kg) [6].ETT dosing (to be given only while IV access is being obtained): 0.5–1 mL/kg of 1:10,000 epinephrine (0.05–0.1 mg/kg)

肾上腺素可以通过静脉或气管内给药。静脉途径是最有效和可预测的给药方式，尽管在新生儿中气管内途径通常比静脉途径更快。新生儿复苏时使用肾上腺素的浓度应为1：10000。静脉剂量：0.1~0.3mL/kg 1：10，000肾上腺素(0.01~0.03 mg/kg)[6]。ETT剂量(仅在获得静脉注射时给予)：0.5-1mL/kg 1：10，000肾上腺素(0.05-0.1 mg/kg)

最后一句气管内给药只有当有静脉通路的情况下可以这么做？有没有错误？还是只有在没有静脉通路时才能这么干