面罩吸氧后脑血流速度又恢复至手术前状态。
After mask oxygen inhalation, the blood flow velocity returned to preoperative level.
面罩吸氧适合低出生体重儿，可替代头罩吸氧，是早产儿理想的供氧方法。
Conclusion: inhalation oxygen with facemask is proper to low birth weight infants, which can replace head net, which is also an ideal way to supply oxygen.
目的：证明氧气雾化吸入器面罩吸氧的有效性，以便更好的向病人进行宣教，提高其利用效能。
Objective: to prove oxygen mask oxygen inhalation device effectiveness in order to better educate patients, and improve the effectiveness of its use.
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