Objective To discuss the electrocardiogram(EKG)positioning method to the guiding role of determining the pipe length and the accuracy of operative localization in central venous catheterization procedure. Methods Chose 32 cases of tumor patients who had center venipunture.Use the catheter taken EKG data when cath-etering,and then given validation using postoperative chest X -ray or fluoroscopy.Judgment the sensitivity,specificity and disposable catheters success rate of the EKG positioning method.Results In the 32 cases of cancer patients, 30 patients had characteristic P waves,when the chest X -ray confirmed the superior vena cava or the junction with the right atrium,one case into the right atrium,when one case of non -P -wave in the subclavian after intravenous discounts tune into the tube after it confirmed the superior vena cava.Conclusion EKG positioning method with high accuracy in the deep venous catheter in the catheter tip positioning applications.The clinical applications are feasible.

Objective Through the statistics of drug consumption in the task of Harmonious Mission -2018, sort out the process of medication supply of overseas medical services, analyze and evaluate the medication supply services. Methods Count the types and quantities of medicines consumed by marine hospitals in the Harmonious Mission-2018, analyze whether the preparation of medicines is sufficient, effective, and economically reasonable, and find way to improve the process of medicine supply in overseas medical services. Results Statistics on the consumption of drugs in the Harmonious Mission-2018 show that the number of drugs consumed accounted for 68.21% of the total kinds of medicine carried, that the total amount of drugs consumed accounted for 40.61% of the total costs of medicine carried, and that the total number of boxes of drugs consumed (the number of the smallest packages) accounted for 21.72% of the total number of boxes of medicine carried. Conclusion The medicine support services in the Harmonious Mission-2018 was sufficient and effective. But, the workflow and the processes of the services still need to be further improved.