Just so you are aware, penicillin is not normally used during abortions. Some places recommend NOT using itWhat goal posts!?
But anyway, pretending the antibiotics was the 'medical science' that helped keep women alive during an abortion is a hard needle to thread when you also make the argument about hygiene. So... maybe being more sterile would help. Probably more the antibiotics
Also, any technology that helped test for babies, as (IMO) IF you going to have an abortion, the first trimester would make sense. Also general improvements in diagnosis. Also women getting rights. Also medical consent becoming a thing so it would stop some doctors from circumcising women during abortions and births. Or getting male doctors out of the profession who didn't particularly worry about women living. Or just better treatments
You know, lots of medical science things