Appendectomy in the field? I would say only under extreme circumstances. When a patient is opened up in any type of invasive procedure they are exposed to the external environment which is loaded with bacteria and other organisms. Not saying we don't clean our trucks to the best of our ability, but what makes you think opening someone up in the back of an ambulance is a good idea? Highly unsanitary.. I would expect most patients having an appendectomy done in the back of a truck to come back some sort of a nasty infection. Bad idea in my opinion, there's a reason surgeons do these types of procedures in a controlled and as sanitary as possible of an environment.