Abstract
Central venous catheters (CVCs) are now widely used in critical care for critical care, fluid resuscitation, drug infusion, parenteral nutrition, hemodynamic monitoring, chemotherapy, and continuous blood purification treatment. Although the application of CVCs can facilitate clinical medical care work, the proportion of patients with various catheter complications will exceed 15%, and the incidence of catheter blockage is about 25%. At present, adequate flushing and effective sealing are considered to be important means to reduce and prevent catheter blockage. This article reviews the prevention of central venous catheter occlusion with different sealing fluids, in order to provide reference for clinical nurses to prevent central venous catheter occlusion. Key words: Central venous catheter; Normal saline; Heparin saline; Blocking
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