Objective:To prospectively evaluate the feasibility of clinical application of dual chamber high pressure injection type PICC power(central venous catheter)in respiratory and critical patients. Methods:Totally 187 patients in ICU of the department of respiratory medicine of the First Affiliated Hospital of Chongqing Medical University for PICC catheterization from 2014 January to December 2015 were taken as the research object including 100 cases using double channel power of PICC catheter and 87 cases using three directional valve catheter. The general information

catheter indwelling time

time of hospitalization

cost of hospitalization

the patient satisfaction and catheter related complications occurred rate of the two groups were prospectively analyzed. Results:There was no significant difference in the general information

catheter indwelling time

length of hospital stay and hospital costs between the two groups. Pipe blocking rate was lower in double channel power PICC catheter group than in three directional valve catheter group;incidence of venous thrombosis was higher in double channel power PICC catheter group than in three directional valve catheter group

but without significant differences. But the double channel power PICC catheter can reduce the pain of patients with repeated puncture

so the patient satisfaction was in double channel power PICC catheter group than in three directional valve catheter group with statisti-cal significance. As the three directional valve catheter group need to puncture the peripheral blood vessels

resulting in increased incidence of transfusion related complications

the nursing workload was heavier than that of double channel power PICC catheter group.Conclusion:Double channel power peripherally inserted central catheter can provide patients with continuous multi-channel administration

continuous hemodynamic monitoring

parenteral nutrition

strengthen the collection of CT angiography and blood samples. It has outstanding advantages

especially for patients with coagulation disorders. It is worth popularization and use in critically ill patients.