Complications
If the cannula is not sited correctly, or the vein is particularly fragile and ruptures, blood may leak into the surrounding tissues, this situation is known as a "tissuing" or a "blown vein". Using this cannula to administer medications causes extravasation of the drug which can lead to edema, causing pain and tissue damage, and even necrosis depending on the medication. The person attempting to obtain the access must find a new access site proximal to the "blown" area to prevent extravasation of medications through the damaged vein. For this reason it is advisable to site the first cannula at the most distal appropriate vein.
If a patient needs frequent venous access, the veins may scar and narrow, making any future access extremely difficult or impossible.
A peripheral IV cannot be left in the vein indefinitely, because of the risk of insertion-site infection leading to phlebitis, cellulitis and sepsis. The USCenters for Disease Control and Prevention updated their guidelines and now advise the cannula need to be replaced every 96 hours.[2] This was based on studies organised to identify causes of Methicillin-resistant Staphylococcus aureus MRSA infection in hospitals. In the United Kingdom, the UK Department of health published their finding about risk factors associated with increased MRSA infection, now include intravenous cannula, central venous catheters and urinary catheters as the main factors increasing the risk of spreading antibiotic resistant strain bacteria.
No comments:
Post a Comment