In my experience, the field of pre-hospital care is a fascinating blend of long-winded medical theory and just plain peasantly common sense. Here’s an example from “Essentials of Paramedic Care”:
“Blunt trauma associated with sternal contact with the
steering wheel in an unrestrained motor vehicle collision
can result in pericardial tamponade, myocardial contusion,
dissecting aortic aneurysm, and pulmonary contusion. All
four are bad.”