Sepsis is a general term for surgical infections with a systemic inflammatory response. It is a collective term for surgical infections with a severe systemic response caused by infection, with marked changes in temperature, circulation, and respiration. Sepsis (sepsis), or septicemia. It is a clinical syndrome caused by an infection. The septic pathogenic bacteria invade the blood stream and multiply in it, and spread throughout the body with the blood stream, causing new multiple septic lesions in tissues and organs. For example, sepsis due to Staphylococcus aureus, often causing multiple liver abscesses, kidney abscesses, etc. After invading the bloodstream, septic bacteria multiply in it and spread through the bloodstream to other tissues or organs of the host subject, producing new septic lesions.