帮助急性呼吸衰竭的危重患儿进行有效协调的机械通气 ,减轻应激反应顺利完成床边各项创作性诊断和治疗操作 ,更有助于帮助危重患儿在心理上顺利渡过危重急救期。临床上常用的一些麻醉剂如吗啡、哌替啶等的副作用较大 ,而不适用于长时间反复使用 ,特别对呼吸中枢的抑制与现代机? To help children with acute respiratory failure effectively coordinate the mechanical ventilation and reduce the stress response to successfully complete the bedside of the various creative diagnosis and treatment operations, but also help to help children with critical psychiatric successfully passed the critical first aid period. Some commonly used in clinical anesthetics such as morphine, meperidine and other side effects larger, but not for a long time repeated use, especially for the inhibition of the respiratory center and the modern machine?