lower body negative pressure

例句：

1. 1.The patient was given a lower body negative pressure to help him breathe.
   病人被给予下体负压以帮助他呼吸。
2. 2. In the operating room, doctors use lower body negative pressure to reduce blood loss.
   在手术室里，医生使用下体负压来减少出血。
3. 3.The nurse adjusted the patient's position to ensure that he was under lower body negative pressure.
   护士调整了病人的位置，以确保他处于下体负压状态。