My OH worked something similar in the 70s as a junior doc.
The worst scenario was as a country GP in a dispensing practice before mobile phones - even if you bought one they were the size of a brick and had virtually no coverage.
He worked every day (except Weds), every other night, and every other weekend, when his shift would start on a Thursday at 8.30 am and go right through till Monday night at about 7.30 pm. It was truly punishing; and the children and I could not go out, because I had to woman the phone.
In some ways I think junior doctors are slightly better off because the conditions of their contracts are more humane than they were back then. OH always said that, punishing though it was, it was the only way you could learn all the skills you needed; and I guess with so many medical advances the junior doctors have even more to learn.