Final answer:
For BSI and CLABSI prevention after central catheter insertion, chlorhexidine should be used for skin antisepsis, the site should not be left uncovered, only catheters with known and reliable origins should be used, and signs of infection should never be ignored.
Step-by-step explanation:
When considering BSI and CLABSI prevention after the insertion of central catheters, it is vital to adhere to specific protocols to reduce the risk of infection. The correct approach is to use chlorhexidine for skin antisepsis because of its broad-spectrum antimicrobial activity that effectively reduces the risk of infection at the catheter insertion site. The catheter site should not be left uncovered; instead, an appropriate dressing should be used to provide a barrier against bacteria and to allow for constant monitoring of the site for any signs of infection. Using a catheter with an unknown origin is highly discouraged due to potential risks of contamination and lack of sterility assurance. Lastly, any signs of infection should not be ignored; they must be addressed promptly to manage and treat the infection early, potentially avoiding more serious complications such as sepsis.
This set of actions is in alignment with the World Health Organization's recommendations and the principles of aseptic technique, which include maintaining a sterile field during medical procedures to prevent contamination and subsequent infections. Health care providers should always be vigilant for clinical signs of infection which can stem from pathogens introduced to the bloodstream via contaminated catheters and other sources.