We had a Pt earlier this evening with SVT. HR 190's ...young girl ( no drug use can you believe it). I was administering Adenosine with a stop cock knowing that it only has a 6 second half life. The MD in the room was telling me that her arm needs to be raised when giving her the medication. I have heard that this is a myth. As long as you inject it quick enough and then flush it you are good to go....... Please tell me what is your opinion? Do you raise the arm or not ?