Invasive instruments must be sterile: no compromise with asepsis, say O.R. nurses.
D000985:Antisepsis; D001207:Asepsis; D003428:Cross Infection / Q000517:prevention & control; D019723:Endoscopes; D006801:Humans; D020706:Laparoscopes; D013525:Surgical Instruments / Q000592:standards*