Uh, about 4 hours ago.
Which is really crazy because it was the first time I've seen it done or done it in years.
But... 3 mo infant, found down, asystolic in crib, EMS pulls out all the stops, briefly PEA (supposedly,) then back to asystole. EMS inserted 1st IO, which "blew." We inserted second (both anterior tibia as CPR in progress), and I don't know if the IO was too long, or just wasn't perfectly positioned, but the entire calf infiltrated. (And it was the smallest one we had.) No other IV access despite multiple attempts by 2 docs, and a bunch of damn-good ED nurses. And so we ended up dosing at least one epi via ETT.
I've never dealt with an IO that did that. And considering what little we had to work with, in a very small baby, we did it. As noted above, this is about the only time I'd imagine it being used these days. I contemplated a humeral or even sternal IO, but I think we all knew he was gone, in all likelihood before parents even noticed. Still, you work a baby as long as you have to.
