you know, sometimes coags are ordered just because....without any really good reason, esp in the er during the initial workup.
while i admire you for trying to figure out the rationale, i hate to see you expending so much energy on the topic.
when a patient comes in experiencing resp distress, things are often set into motion. typical scenerio: often, i will start a line and draw blood right off the bat, before anything else (other than vs) to get things going. while i'm ordering our labs on the order sheet, i will ask "are you taking any blood thinners?" since our protocol is to check coags if they are on coumadin (or maybe even lovenox at home). the patient says "yes," so a ptt/pt/inr all get ordered. then, when going through the med list with the patient/family, we discover that the "blood thinner" is actually asa. many patients think of this as a blood thinner, which it is, it just isn't one that requires pt/ptt monitoring. we don't cancel the lab, even though it really isn't necessary.
or, could be that the patient had some bruising, was c/o "bleeding easy" or just for whatever reason the doc felt the coags should be checked. maybe a gut feeling. like someone else said, maybe they wanted a baseline in case the ct was positive.
there could be several reasons. maybe the patient was in rm 10, and the coags should have been ordered on rm 11 (that is how one of my male patients managed to get a pregnancy test once.....thankfully, it was negative).
my point is, there could be many reasons why coags were ordered in the initial er workup. some of them really arn't "good" reasons. don't waste too much energy trying to figure it out.:wink2: