Delivery often occurs without the benefit of asepsis. Basic surgical principles for asepsis etc., are known as Halsteads principles. There are two categories of asepsis&colon; medical and surgical. The line between antisepsis and asepsis is interpreted differently, depending on context and time. The peak was about 1870, after which antisepsis and asepsis gradually brought them under control. The goal of asepsis is to eliminate infection, not to achieve sterility. The modern concept of asepsis evolved in the 19th century through multiple individuals. Infection is a possible complication, and hence asepsis is practiced during most Seldinger procedures. Asepsis refers to any procedure that is performed under sterile conditions. He emphasized asepsis and introduced and advocated for surgical techniques that significantly reduced mortality.