Can A Person Recover From An Aneurysm What Happens When A Person With CF Is Not On Antibiotics Long Enough To Recover From An Infection?

What happens when a person with CF is not on antibiotics long enough to recover from an infection? - can a person recover from an aneurysm

Is that something that causes bacteria to mutate "and become resistant to antibiotics? Can this be a septic shock? If so, how long does it take to lead this way?