Principles of asepsis
Asepsis means freedom from pathogenic (that is, disease-causing) microorganisms, whilst sepsis indicates the presence of micro-organisms causing toxicity in the body.
Infection can occur endogenously or exogenously.
In order to reduce the potential for exogenous infection, nurses and other health care professionals employ what is termed a sterile (or aseptic), nontouch technique when undertaking invasive procedures such as urethral catheterization and injections, or procedures where the risk of crossinfection is high, for example when dressing wounds or removing sutures and drains.
Aseptic or non-touch technique