Translation:Since the patient's health was not changed for the better, he died.
I wrote "As the patient's health wasn't changed for the better he died". Reported it, because I think it should be accepted. Having said that, in English it should say "patient's health didn't change for the better". "Wasn't changed" implies that someone else - not the patient - didn't make changes to the patient's health (for the better). It might suit the grammar exercise here, but it is wrong.