I couldn't think of anything else medical but here's a neat one. If the callout involves victim bleeding (lets say for a gunshots) , paramedics should handle the bleeding first and if needed do CPR next. Because just like collapsed lungs, you can't do cpr on a person who is actively bleeding out or you'll lose the patient through blood loss. You can use an animation to make look like you're applying a tourniquet to give that your character is actively stopping the bleeding before proceeding to do anything else.