bag-valve-mask respiration unit

例句：

1. 1. The patient wasplaced on a bag-valve-mask respiration unit for the treatment ofpneumonia.
   患者被安置在袋阀面具呼吸机上进行治疗。
2. 2. During theoperation, the surgeon used a bag-valve-mask respiration unit tomaintain the patient's airway patency.
   手术中，外科医生使用袋阀面具呼吸机来保持患者的气道通畅。
3. 3. The nurse carefully monitored the patient's oxygen levels and adjusted the bag-valve-mask respiration unit accordingly.
   护士仔细监测了患者的氧气水平，并相应地调整了袋阀面具呼吸机。