Best wishes for you both -- I hope he recovers well.

When I have my blood pressure and heart rate checked during any visit to the doctor, there's a good chance they will look confused and check a second time, or ask if the numbers are always that low. Last year my pulmonologist said, "how much bike riding did you say you do?" And that was after I walked up 5 flights of stairs rather than take the elevator to his office.

My sister is a nurse in a critical care post-op unit -- I think I will ask her about this.