Those numbers aren't too far off from what I had the last time I was hospitalized for a nosebleed.

edit: Was.

Yes, if the heart rate were 60, that would be a lot more suspicious. Even if the procedure hasn't started yet, I'd expect the subject to be fucking scared. I don't know if the O2 saturation makes sense for what's happening, but it might. If your entire body is being taken over by a symbiote, any readings might be possible.