According to the statistics of the Ministry of health services, from 2010 to 2017, the most common infection site was blood flow infection in the intensive care unit of the medical center, in which the blood flow infection rate of the central venous catheter (CVC) was as high as 44%. Although CVC indwelling provides convenience for clinical treatment, the use of invasive catheters increases the risk of infection. Once bacteremia is caused, the mortality of patients will be increased (Sheng, Chen, 2017).<br>Goals and objectives: in order to improve the improvement value of the unit by 80%, the complete rate of combined central venous catheter care in critical units was from 56.9% to 91.4%<br>
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