ABSTRACT
Objective:To observe the effect of partial liquid ventilation (PLV) on gas exchange,pulmonary compliance and blood dynamics in the pulmonary edema rabbits after seawater drowning(PE-SWD). Methods:Totally 42 healthy male New Zealand rabbits were randomly allocated into 3 groups (n=14);each group was treated with various methods after PE-SWD model was established:PE group with no treatment,CMV group with conventional mechanical ventilation and positive end-expiratory pressure(PEEP),PLV group with CMV,PEEP and FDC.After being treated for 3 h,blood gases,pulmonary mechanics,hemodynamics,pulmonary histopathology and survival time were observed.Results:In PLV group,PaO 2 increased obviously and reached (262.84?64.33) mmHg (1 mmHg=0.133 kPa), airway pressure decreased by 23.4%,pulmonary static compliance increased by 31.3% and TNF-? decreased by 24.9%.HR and MAP showed no significant changes after treatment compared with PE group.Conclusion: Pulmonary gas exchange and compliance are improved significantly during PLV in the PE-SWD rabbits without obvious influence on hemodynamic status, although the survival time of PLV group is less than that of CMV group.