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  • Title: Nosocomial blood stream infection in Auckland Healthcare hospitals.
    Author: Nicholls TM, Morgan AS, Morris AJ.
    Journal: N Z Med J; 2000 Mar 24; 113(1106):96-8. PubMed ID: 10836309.
    Abstract:
    AIM: To report the epidemiology of nosocomial bloodstream infections in Auckland Healthcare Hospitals. METHODS: From January 1995 to December 1997 every positive blood culture result was followed up by an infection control nurse who recorded relevant clinical, laboratory and treatment information on a data collection sheet. The clinical significance of each isolate was determined and the most likely source recorded. RESULTS: During the three year study period, there were 1,046 nosocomial blood stream infections yielding 1,147 isolates. The most common isolates/groups were: coagulase negative staphylococci 19%, S. aureus 18%, E. coli 12%, streptococci 10%, other Enterobacteriaceae 10%, Enterobacter spp. 7%, Pseudomonas spp. 5%, anaerobes 2%, and yeasts 4%. The most common sources were: intravascular lines 40%, urinary tract 8%, skin/soft tissue 8%, gastrointestinal 7%, and unknown 25%. The overall results were strongly influenced by the neonatal intensive care unit at National Women's Hospital where 58% of blood stream infections had intravascular-lines as the source and 53% of the isolates were coagulase negative staphylococci. The overall blood stream infection rate was approximately 6/1,000 admissions. Rates per 1,000 inpatient days for haematology, intensive care, oncology, neonatal and all other patients were 13, 11, 3, 3 and 1 respectively. CONCLUSIONS: Surveillance data that are clinically relevant are useful in identifying areas where infection prevention strategies can be implemented. Because of the importance of lines as a source of nosocomial blood stream infections all aspects of line care are being reviewed with the aim of reducing these devices as a source of blood stream infection.
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