Add Yahoo as a preferred source to see more of our stories on Google. We all know those announcements, if not from our own travels, then at least from movies and TV shows. “Is there a doctor on board?

A medical emergency above the clouds, and you are the only doctor on board among the passengers — a situation doctors fear. What should you be prepared for? How can you avoid making wrong decisions?

We all know those announcements, if not from our own travels, then at least from movies and TV shows. "Is there a doctor on board?" And the thing is, the answer is pretty much always yes. A doctor may ...