[Clean field-technique to reduce the local air contamination level in operating rooms. Clinical experiences in accident surgery (author's transl)].

A newly developed technique to reduce the local air contamination level in operating rooms is described. After physical and hygienic evaluations a mobile clean field-equipment has been used at 97 traumatic operations. At 66 operations about 300 aerobiological samples of the contaminated room air and simultaneously of clean field-air at the wound site were collected. It is shown that the bacterial level of clean field-air is comparable with those levels in a sterile operating enclosure. The advantages of the new technique and first experiences under practical operating conditions are discussed.