Hi and welcome to HCM. Thanks for the query.
It is hard to say what would happend.probably morphine
isnt something that caused earlier death or complication and i am sure there was much more benefits from morphium than costs so thi sshould not be soemthing that you regret. It is much more important the quality of life without pain then prolongation of life for several weeks or months.
Wish you good health. Regards