So i know you can take blood from one when you first put it in, but why cant you at other times, eg if its not being used
Two scenarios i have regarding this
One is the patient had hyperkalaemia so needed regular k levels but didnt like needles and was quite hard to obtain blood for and she would need regular blood to check her k whilst being treated, could it be possible to insert a cannula just for the purpose of taking the regular bloods for next while whilst monitoring her k, so only stabbing her once for the cannula against repeated times (with having another separate cannula for the dextrose insulin etc)
Second scenario is the same patient, she had two cannulas one in each antecubital fossa, she wasnt using one at the current time and it had been in for 3 days so after trying to get blood from her hand didnt manage we took it out of the acf so we had access to the acf to try to get blood, could we not have used the cannula for getting blood before we removed it since it was already in and going to be removed so any risk to patency of cannula which i think is the problem if it clotted? Wouldnt really matter as it was going to be taken out anyway
Thankss!