Heads-up display for anesthesiologists

It seems that hospitals where anesthesiologists are responsible for four different operating rooms at the same time are taking advantage of wearable computing. Working with the principles that having people die on them would be a bad thing and the inevitable laws of physics (which state that an individual can only be in one place at any one time) they have instituted a program using a heads-up-display so doctors can see information from each of the four surgeries simultaneously, as well as alerts, medical charts and schedules.
This allows the anesthesiologists (that is so not fun to write) to respond quickly to any crisis and hopefully avert any needless deaths.