[Aerodynamic analysis of a new sterile operating enclosure, and comparative bacteriologic testing between a conventional operating theatre and a sterile enclosure during sham operations (author's transl)].

An aerodynamic and bacteriological evaluation of a new sterile operating enclosure has been undertaken, comparing it with a conventional operating theatre under sham operating conditions with or without coincident use of either a surgical helmet or surgical face mask. Statistical analysis of these studies show the bacterial level in the sterile enclosure at the wound site is significantly lower than in ordinary operating theatre conditions whereas the use of a helmet with evacuating ducts effects these findings insignificantly.