Freebase(0.00 / 0 votes)Rate this definition: Necrosis. Necrosis is a form of cell injury that results in the premature death of cells in living tissue. Necrosis is caused by factors external to the cell or tissue, such as infection, toxins, or trauma that result in the unregulated digestion of cell components.
Staph bacteria are commonly carried on the skin or in the nose of healthy people. MRSAâmethicillin-resistant Staphylococcus aureusâis a type of staph that is resistant to antibiotics called beta-lactams. In the past the majority of MRSA infections occurred among patients in hospitals or other health care settings.
1 Meticillin-resistant Staphylococcus aureus (MRSA) is only one of a number of bacteria that can be resistant to lots of different antibiotics. 2  Pseudomonas aeruginosa is a relatively common finding in long-standing ear disease and some wounds.seudomonas aeruginosa. Pseudomonas aeruginosa is a common bacterium that is able to colonize many natural and manmade environments. It is commonly found in soil and water but can also be found on animal surfaces.