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Automated surveillance system for hospital-acquired urinary tract infections in Denmark

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

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  • O Condell
  • S Gubbels
  • J Nielsen
  • L Espenhain
  • N Frimodt-Møller
  • J Engberg
  • J K Møller
  • S Ellermann-Eriksen
  • H C Schønheyder
  • M Voldstedlund
  • K Mølbak
  • B Kristensen
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BACKGROUND: The Danish Hospital-Acquired Infections Database (HAIBA) is an automated surveillance system using hospital administrative, microbiological, and antibiotic medication data.

AIM: To define and evaluate the case definition for hospital-acquired urinary tract infection (HA-UTI) and to describe surveillance data from 2010 to 2014.

METHODS: The HA-UTI algorithm defined a laboratory-diagnosed UTI as a urine culture positive for no more than two micro-organisms with at least one at ≥10(4)cfu/mL, and a probable UTI as a negative urine culture and a relevant diagnosis code or antibiotic treatment. UTI was considered hospital-acquired if a urine sample was collected ≥48h after admission and <48h post discharge. Incidence of HA-UTI was calculated per 10,000 risk-days. For validation, prevalence was calculated for each day and compared to point prevalence survey (PPS) data.

FINDINGS: HAIBA detected a national incidence rate of 42.2 laboratory-diagnosed HA-UTI per 10,000 risk-days with an increasing trend. Compared to PPS the laboratory-diagnosed HA-UTI algorithm had a sensitivity of 50.0% (26/52) and a specificity of 94.2% (1842/1955). There were several reasons for discrepancies between HAIBA and PPS, including laboratory results being unavailable at the time of the survey, the results considered clinically irrelevant by the surveyor due to an indwelling urinary catheter or lack of clinical signs of infection, and UTIs being considered HA-UTI in PPS even though the first sample was taken within 48h of admission.

CONCLUSION: The HAIBA algorithm was found to give valid and valuable information and has, among others, the advantages of covering the whole population and allowing continuous standardized monitoring of HA-UTI.

OriginalsprogEngelsk
TidsskriftThe Journal of hospital infection
Vol/bind93
Udgave nummer3
Sider (fra-til)290-6
Antal sider7
ISSN0195-6701
DOI
StatusUdgivet - jul. 2016

ID: 49907011