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Intensive Care Med ; 38(11): 1769-78, 2012 Nov.
Article in English | MEDLINE | ID: mdl-22893223

ABSTRACT

PURPOSE: The changed epidemiology of extended spectrum beta-lactamases (ESBL), the spread to the community and the need for prudent use of carbapenems require updated knowledge of risk factors for colonization with ESBL-producing enterobacteriaceae (ESBL-PE). METHODS: An 8-month prospective study in the medical ICU of an 850-bed general and university-affiliated hospital. RESULTS: Of 610 patients admitted, 531 (87 %) had a rectal swab obtained at admission, showing a 15 % (82 patients) ESBL-PE carriage rate, mostly of E. coli (n = 51, 62 %); ESBL-PE caused 9 (3 %) infections on admission. By multivariable analysis, transfer from another ICU (OR = 2.56 [1, 22]), hospital admission in another country [OR = 5.28 (1.56-17.8)], surgery within the past year [OR = 2.28 (1.34-3.86)], prior neurologic disease [OR = 2.09 (1.1-4.0)], and prior administration of third generation cephalosporin (within 3-12 months before ICU admission) [OR = 3.05 (1.21-7.68)] were independent predictive factors of colonization by ESBL-PE upon ICU admission. Twenty-eight patients (13 % of those staying for more than 5 days) acquired ESBL carriage in ICU, mostly with E. cloacae (n = 13, 46 %) and K. pneumoniae (n = 10, 36 %). In carriers, ESBL-PE caused 10 and 27 % of first and second episodes of ICU-acquired infections, respectively. CONCLUSION: We found a high prevalence of ESBLE-PE colonization on admission to our ICU, even in the subgroup admitted from the community, but few first infections. Identifying risk factors for ESBL-PE colonization may help identifying which patients may warrant empiric ESBL-targeted antimicrobial drug therapy as a means to limit carbapenem use.


Subject(s)
Carrier State/epidemiology , Cross Infection/prevention & control , Enterobacteriaceae Infections/prevention & control , Aged , Antibiotic Prophylaxis , Carbapenems/pharmacology , Carrier State/drug therapy , Community-Acquired Infections/epidemiology , Cross Infection/epidemiology , Enterobacteriaceae Infections/epidemiology , Escherichia coli Infections/epidemiology , Escherichia coli Infections/prevention & control , Female , France/epidemiology , Humans , Intensive Care Units , Male , Middle Aged , Multivariate Analysis , Prevalence , Prospective Studies , Risk Factors , beta-Lactam Resistance
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