Comparing Smart Care/ps And Psv Used In Difficult Weaning Patient

Objective:To compare the variation on hemodynamics and respiratory mechanics of Smart Care/PS and PSV used in difficult weaning patients,in order to verify the superiority when using Smart Care/PS mode. Method:Forty-one difficult weaning patients caused by postoperative CNS disease and pulmonary infection were included in this RCT. When these patients were fitted to the weaning condition, they were divided into two groups. The basic ventilation mode was SIMV+PSV before weaning.The two groups used Smart Care/PS and PSV respectively. Parameters of pulmonary mechanics and hemodynamics were measured at 5 min,15 min,30 min,1 h and 2h after weaning. The collecting dates were analyzed by repeated measurement analysis of variance. Results: (1) The f,Vt,P_0.1,NIF and HR had no significant difference between the two weaning modes (P>0. 05), but they had difference at each times (P<0. 05). (2) The PetCO₂,C,R,MAP and CI had no significant difference between the two weaning modes (P>0. 05) and at each times (P>0. 05). Conclusion:For those difficult weaning patients caused by postoperative CNS disease and pulmonary infection, Smart Care/PS can take the place of PSV, simulate the doctor judging and dealing with pressure support level according to the patients condition and can be used to automated weaning .