as a volunteer EMT I’ve done CPR a few times. it’s normal to break ribs. probability of rib fracture increases with age. sufficiently old and it approaches 10

as a volunteer EMT I’ve done CPR a few times. it’s normal to break ribs. probability of rib fracture increases with age. sufficiently old and it approaches 100%. babies are the most flexible, I don’t know if their ribs even can break, below a certain age. edit: clarifying, I’ve never not broken ribs, but my youngest patient was middle age.