Some of the "rules" you describe are foolish. Watch the camera throughout. Stupid. My computer setup is in a room full of books. It would be essentially impossible for me to move hundreds of books elsewhere or move the computer. Stupid.
However, your participation will be "judged" by humans who, one hopes, are sensible. If they are not, and if their goal is to "catch you" then you are lost.
I suggest that you comply "reasonably" with the rules and if claims are made against you then deal with it then rather than being paranoid up front, which won't help your mental state.
I'd suggest, however, that while taking an online exam in your office, put a sign "Exam in progress. Do not disturb" on the door. This should prevent all but emergency interruptions. And, people in the medical profession should be able to understand that emergencies do occur and must be dealt with.
Assume the best. Deal with problems if they occur.
Also note that online exams, being fairly new, are a poor substitute for face to face exams. The compromises needed to make it work at all are suboptimal, but we haven't yet worked out suitable procedures that focus on the purpose of exams. Perhaps that will come, but, for now, it is painful for everyone.