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Risk factors for nosocomial rectal colonization with carbapenem-resistant Acinetobacter baumannii in hospital: a matched case-control study. | LitMetric

AI Article Synopsis

Article Abstract

Background: During the last decade carbapenem-resistant Acinetobacter baumannii (CRAB) became hyper-endemic in hospitals due to difficult to control spreading. Our aim is to identify risk factors for nosocomial rectal CRAB colonization in an endemic hospital.

Methods: A retrospective matched case-control study (ratio 1:2) with a prospective inclusion of cases and concurrent selection of controls was conducted from January 2017 to December 2018 in a tertiary-care hospital. Universal active surveillance for CRAB was implemented. Univariate and multivariate logistic regression was carried out using a stepwise selection method to compare prognostic factors between cases and controls. A sub-analysis was carried out according to the type of department.

Results: Forty-five cases with nosocomial rectal CRAB colonization and 90 controls were included. One hundred and two (75%) patients were hospitalized in medical departments. At multivariable analysis significant risk factors associated with CRAB colonization were: use of permanent devices (OR 10.15, 95% CI 2.27-45.39; P = 0.002), mechanical ventilation (OR 40.01, 95% CI 4.05-395.1; P = 0.002), urinary catheters (OR 4.9, 95% CI 1.52-16.19; P = 0.008), McCabe score (OR 5.45, 95% CI 1.87-15.89; P = 0.002), length of stay (OR 1.03, 95% CI 1.01-1.05; P = 0.002), carbapenem use (OR 5.39, 95% CI 1.14-25.44; P = 0.033). The sub-analysis showed that patients admitted to different departments had different risk factors. In geriatric department a fatal disease and a longer hospital stay represented significant risk factors both in univariate and multivariate analysis, while in internal medicine department the use of permanent devices, current antibiotic therapy and antibiotic polytherapy represented significant risk factors for CRAB at the univariate analysis, also confirmed in multivariate analysis.

Conclusions: Our data suggest that active surveillance for rectal CRAB colonization should be addressed to patients with an unfavourable prognosis, longer hospitalizations and carriers of multiple devices. To counter CRAB spreading in endemic settings, clinicians must limit the use of carbapenems, and reinforce interventions aimed at proper use of devices.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8028794PMC
http://dx.doi.org/10.1186/s13756-021-00919-6DOI Listing

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