MEDICAL TECHNOLOGY Lecture 1: BACTERIOLOGY
28 Oct 2022
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Oxidative: change in color in tubes w/out mineral oil (open tube) Nonsaccharolytic : no change in color in both tubes. It accounts 75% of non-fermenters in nosocomial infection/bacteremias. It accounts 5% to 15% of all nosocomial infections: 3rd causative of gram (-) bacillary bacteremia, most common is e. coli, then second is k. pneumoniae. Bacteremia - ecthyma gangrenosum of skin (usually in thoracic area in lower extremities: wound infection, pulmonary disease (cystic fibrosis patients, nosocomial uti, endocarditis, meningitis, others: otitis externa among divers and swimmers in public recreational facilities, : nail infection of nail beds with artificial nails. : endophthalmitis: virulence factor, endotoxins lps (component of its outer membrane), motility, capsule, pili, exotoxins. Exotoxin a - most important exotoxin; blocks protein synthesis; resemble. Diphtheria toxin: alginate - polysaccharide polymer in mucoid strains. In patient"s lower pulmonary tract with cf (cystic fibrosis) Belongs to p. fluorescens (p. putida, p. fluorescens) H2o soluble pigments tru short uv light.
