My dad just died a few minutes ago, and the paramedics left a mess hidden under his bed.
My father just died in his sleep. He had passed by the time the paramedics arrived.
They still did their best, which I am very grateful for, but they even an entire trash bag full of used instruments that were stuffed under the bed for some reason
It's likely that it was kicked under the bed by accident. Cardiac arrests are one of the most stressful calls a paramedic can run. The fact that it was bagged up at all means that were trying to keep the scene neat as they worked.
But once they terminated resuscitation efforts the call switches to documentation, paperwork, medical examiner notifications, dealing with an upset family who may have trouble processing or accepting the death. They probably just lost track of it at that point.
If you don't feel comfortable touching it, there are cleanup services that will remove it. My agency doesn't have a special way of disposing it, it just goes in the regular trash (except for sharps or course, but I don't see any in your picture, and I hope they wouldn't leave those around).
Dab and press, don't rub. Dawn in cold water first dabbed on and soaked up with a towel, then hydrogen peroxide the same way for what's left had always worked for me.