Shore Guy good to hear you are on the mend despite everything
I Obviously don't know what your admission meds were but it sounds to me that either they should not have been prescribed during your stay or if you cannot do without them then alternative aneathesia and post operative drugs should have been prescribed other than the ones which interacted.
I don't know what US protocols are but over here it is unlikely you would have experienced what you did. Your meds would have undergone the scrutiny of the admitting RN, F1, pharmacist and the aneathetist. We would all be held accountable in some ways. The F1 for prescribing the wrong drugs, the nurse for giving them without querying the prescription and the aneathetist and pharmacist for not noticing a potentially dangerous situation.
If this doesn't happen in the US then I would say that not only could your system learn from aviation it could also learn from us. If it was meant to happen and didn't because the hospital did not follow protocols you may have a case for litigation.