In cases of shock, a central venous catheter, PICC (peripherally inserted central catheter), venous cutdown or intraosseous infusion may be necessary.
Complications[edit]
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.
In cases of shock, a central venous catheter, PICC (peripherally inserted central catheter), venous cutdown or intraosseous infusion may be necessary.
Complications[edit]
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.
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