title: [Investigation of the contamination of air and environment in the blood dialysis department].
abstract: As the blood dialysis has been applied more widely, the hygenic state of air and furniture surfaces in blood dialysis room and that of dialysis fluid would diretly affect the incidence of nosocomial infections. The results of investigation in three hospital dialysis units showed that: With people walking around, the number of air microbes presented a kenetic variation, ranged from 410 to 1755CFU/m3. That number was positively related to the number of dust particles in the air, which carring certain amount pathogenic of conditional-pathogenic microbes, among which, fungi, Stap. aureus and Pseud. aruginosa acount for 8.38%, 2.99% and 1.39% respectively. Physical of chemical disinfection treatment showed prompt effects (P < 0.01). The thermogenic reaction and infections in dialysis patients were mainly due to microbes containminated in the water for dialysis. Some of these microbes may produce intracellular or and exo-toxin and thermogenic factors. The microbes in dialysis machines could 100% be killed immediately after disinfecting the dialysis tubes with 5% available chlorine. But the germ numer could rise again as the time streched. Our results suggested that certain monitoring and disinfectious procedures must be carried out in hospital critical departments so as to reduce nosocomial infection cases.
authors.forename: H
authors.initials: H
authors.lastname: Wei
authors.forename: L H
authors.initials: LH
authors.lastname: Li
authors.forename: L J
authors.initials: LJ
authors.lastname: Qin
mesh_terms: D000391:Air Microbiology; D016902:Air Pollution, Indoor / Q000032:analysis*; D003428:Cross Infection / Q000209:etiology / Q000517:prevention & control*; D006436:Hemodialysis Units, Hospital; D006801:Humans; D015994:Incidence