A new method has been proposed ( J Korean Soc Emerg Med. 2003 Aug;14(3):224-227) for giving the drug. Both the adenosine and normal saline are drawn up into a single 20mL syringe and pushed ie., the drug and flush are given together. In this study(although small), this method was shown to have similar efficacy to more traditional ways of giving the drug. The concerns of dilution of the adenosine, appear to be unfounded.
I’ll certainly try this. It just sounds easier, with less fiddling with three-way taps.