Conclusion In patients with respiratory failure Type II, MRV resulted in lower PIP, PP, Pm as compared with CMV, PEEPi with MRV mode was significantly lower than that with CMV.

• SIMV的PP、Pm低于CMV；差异有显著性(P<0.；05)；但PIP及PEEPi水平与CMV比较无显著差异(P>0