Epidemiologia delle batteriemie nosocomiali in Lombardia nel triennio 1999-2001

We analyzed bloodstream infection(BI) performed in eight hospitals in Region Lombardia in the period 1999- 2001 following criteria and methods as in the study performed in the year 1997.Data were evaluated from 434.000 hospital patients (one third of hospital patients annualy recovered in Lombardia Region each year). Of these 56.3 positive blood coltures /1000 patients were observed. Data were similar as 1997. In total 3063 episodes of bacteriemia were observed (6.98 BI / 1000 hospital patients).53% of cases correlated to hospital infection. Organism identification of causative organisms resulted 22.5% for E.coli and 10.6% for KES; 17.7% S.aureus,4.5% Yeast .Anaerobic bacteria resulted involved in 3.4%.Among the frequency of isolates difference was noted in different wards In intensive care unit E.coli was pathogenic in 5.9% of patients, but KES in 25.5% of cases. Differences were noted if nosocomial or comunity infections were involved. It was concluded that epidemiological data of BI from all the hospital of Region Lombardia could support the knowledge of bacteriemic episodes in different wards as useful method of surveillance particularly in order to control economic aspects and efficacy of prevention.