In my very limited experience and exposure to such events I’m probably not the best person to give feedback…
I think IO is gaining in popularity and seems to be seeping into more and more practitioners scope of practise, fantastic tool when things are going down hill quiet rapidly.
I think we need to paint a better clinical picture here, was gaining a peripheral or central line not available at the time? Poly pharmacy overdoses can sometimes dehydrate quiet quickly making peripheral cannulation quiet challenging. Every case is different and I wasn’t on scene but if the patient is ?maintaining a patent airway or even had adequate perfusion with ventilation and had an output, I think I’d be more incline to go with an IVC or CVC and use IO as a fallback. I’ve only witnessed IO used as a last restore in a resuscitation case were peripheral access was challenging secondary to sever dehydration, I’m also aware IO may be indicated and the access of choice for paediatrics patients in some strife.
IO is quiet out of my depth and I really haven’t researched it much but I’m guessing the onset and peak of medication though an IO may be slightly faster than a medication administered through an IVC due to direct diffusion into the medullary canal and coming into contact with the red blood cells, of course Naloxone is hepatically metabolised so it may just be faster to give the medication into the venous supply.