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Trends, risk factors and outcomes of healthcare-associated infections within the Italian network SPIN-UTI

Agodi, Antonella and Auxilia, Francesco and Barchitta, Martina and Brusaferro, Silvio and D'Alessandro, Daniela and Grillo, Orazio Claudio and Montagna, Maria Teresa and Pasquarella, Cesira and Righi, Elena and Tardivo, Stefano and Torregrossa, V. and Mura, Ida Iolanda (2013) Trends, risk factors and outcomes of healthcare-associated infections within the Italian network SPIN-UTI. Journal of Hospital Infection, Vol. 84 (1), p. 52-58. eISSN 1532-2939. Article.

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DOI: 10.1016/j.jhin.2013.02.012

Abstract

Background Implementing infection control measures in light of healthcare-associated infection (HAI) surveillance data can prevent HAIs. Surveillance has been associated with a reduction of HAI in intensive care unit (ICU) patients, though the reasons for this improvement remain unclear.
Aim To evaluate changes in healthcare-associated infection (HAI) rates during three surveys of the Italian Nosocomial Infections Surveillance in Intensive Care Units (ICUs) network (SPIN-UTI) six-year project and to explore sources of variation of indicators of HAI in the 65 participating ICUs.
Methods The SPIN-UTI network adopted the European protocols for patient-based HAI surveillance. Cumulative incidence, incidence density, infection rates adjusted for device-days, and device utilization ratios were calculated for each survey and compared. To identify risk factors multiple logistic regression analyses were performed. Crude excess mortality was computed as the difference between the crude overall case-fatality rate of patients with and without HAI.
Findings The risk of ICU-acquired infections increased in the third survey compared with previous (relative risk: 1.215; 95% confidence interval: 1.059–1.394). Among risk factors, the number of hospitalized patients requiring ICU admission and the Simplified Acute Physiology Score II increased from 73.7% to 78.1% and from 37.9% to 40.8% respectively. Although mortality rates remained unchanged, HAIs trebled the risk of death. Acinetobacter baumannii was the most frequently reported micro-organism in the third survey (16.9%), whereas in the previous surveys it ranked third (7.6%) and second (14.3%).
Conclusions The study highlighted the increased risk of HAI, at least partially explained by the greater severity and number of hospitalized patients requiring ICU admission. Furthermore, the management of intubation procedures and of ventilated patients was identified as a potential target for infection control interventions to decrease the growing risk of HAI in ICUs.

Item Type:Article
ID Code:9059
Status:Published
Refereed:Yes
Uncontrolled Keywords:Acinetobacter baumannii, intubation, mortality, prevention, surveillance
Subjects:Area 06 - Scienze mediche > MED/42 Igiene generale e applicata
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Scienze Biomediche
Publisher:Elsevier
eISSN:1532-2939
Copyright Holders:© 2013 The Healthcare Infection Society
Deposited On:17 May 2013 12:27

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