Journal Article

Clinical and Economic Outcomes in Critically Ill Patients with Nosocomial Catheter-Related Bloodstream Infections

Stijn I. Blot, Pieter Depuydt, Lieven Annemans, Dominique Benoit, Eric Hoste, Jan J. De Waele, Johan Decruyenaere, Dirk Vogelaers, Francis Colardyn and Koenraad H. Vandewoude

in Clinical Infectious Diseases

Published on behalf of Infectious Diseases Society of America

Volume 41, issue 11, pages 1591-1598
Published in print December 2005 | ISSN: 1058-4838
Published online December 2005 | e-ISSN: 1537-6591 | DOI: http://dx.doi.org/10.1086/497833
Clinical and Economic Outcomes in Critically Ill Patients with Nosocomial Catheter-Related Bloodstream Infections

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Background. Central venous catheters are universally used during the treatment of critically ill patients. Their use, however, is associated with a substantial infection risk, potentially leading to increased mortality and costs. We evaluate clinical and economic outcomes associated with nosocomial central venous catheter-related bloodstream infection (CR-BSI) in intensive care unit (ICU) patients.

Methods. A retrospective (1992–2002), pairwise-matched (ratio of case patients to control subjects, 1:2 or 1:1), risk-adjusted cohort study was performed at a 54-bed general ICU at a university hospital. ICU patients with microbiologically documented CR-BSI (n = 176) were matched with control subjects (n = 315) on the basis of disease severity, diagnostic category, and length of ICU stay (equivalent or longer) before the onset of CR-BSI in the index case patient. Clinical outcome was principally evaluated by in-hospital mortality. Economic outcome was evaluated on the basis of duration of mechanical ventilation, length of ICU and hospital stays, and total hospital costs, as derived from the patient's hospital invoices.

Results. The attributable mortality rate for CR-BSI was estimated to be 1.8% (95% confidence interval, -6.4% to 10.0%); in-hospital mortality rates for patients with CR-BSI and matched control subjects were 27.8% and 26.0%, respectively. CR-BSI was associated with significant excesses in duration of mechanical ventilation, duration of ICU and hospital stays, and a significant increase in total hospital cost. Linear regression analysis with adjustment for duration of hospitalization and clinical covariates, revealed that CR-BSI is independently associated with higher costs.

Conclusions. In ICU patients, CR-BSI does not result in increased mortality. It is, however, associated with a significant economic burden, emphasizing the importance of continuous efforts in prevention.

Journal Article.  4706 words.  Illustrated.

Subjects: Infectious Diseases ; Immunology ; Public Health and Epidemiology ; Microbiology

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