During our last D&D 5e session, one of the player characters went down. As the healer was a bit too far away, another PC tried to stabilize the other PC with a Medicine check.
Unfortunately, they failed the check, and our DM ruled that this check could only be performed once (just like most checks). The failed check meant that the wounds were just too severe and your medicine knowledge wasn’t good enough to stop the PC from dying.
I don’t fully agree with this because while they are not dead yet, you can still try to bind their wounds even if you don’t succeed immediately.
Unfortunately, I didn’t find any rulings about this and was wondering if there are other arguments for or against making the check multiple times.