Medical accuracy
As an operating room R.N. for 23 years I was struck by the very high degree of medical accuracy in this film, especially with the O.R. scene. They must have had one helluva medical consultant team for this film - and actually listened to them, unlike so many medical dramas these days. I cannot watch most medical shows these days because they are so inaccurate. (The best in the last 20 years was "Chicago Hope" for medical/O.R. realism.) This is a film way ahead of it's time in this area and probably unsurpassed by any generally-released film since.
This film is just outstanding in showing a realistic operating room scene and using medical terminology, right down to the autoclave, instruments, procedures, sterile technique, etc. And yes, back in that time they did have operating rooms with overhead observation as shown in the film - that's where the term "operating theater" originates. None are in use today, but one can still be seen at Mass. General in Boston, called "The Ether Dome".
As for the English nursing student, I guess it's implied that she did have at least a one night stand with Gable that resulted in pregnancy, but it's unclear whether her illness was the result of an abortion gone wrong or an ectopic. Don't know if TMC showed the uncut version or not.