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The clinical relevance of oliguria in the critically ill patient: Analysis of a large observational database

Vincent J. -L.
•
Ferguson A.
•
Pickkers P.
altro
Gowda K.
2020
  • journal article

Periodico
CRITICAL CARE
Abstract
Background: Urine output is widely used as one of the criteria for the diagnosis and staging of acute renal failure, but few studies have specifically assessed the role of oliguria as a marker of acute renal failure or outcomes in general intensive care unit (ICU) patients. Using a large multinational database, we therefore evaluated the occurrence of oliguria (defined as a urine output < 0.5 ml/kg/h) in acutely ill patients and its association with the need for renal replacement therapy (RRT) and outcome. Methods: International observational study. All adult (> 16 years) patients in the ICON audit who had a urine output measurement on the day of admission were included. To investigate the association between oliguria and mortality, we used a multilevel analysis. Results: Of the 8292 patients included, 2050 (24.7%) were oliguric during the first 24 h of admission. Patients with oliguria on admission who had at least one additional 24-h urine output recorded during their ICU stay (n = 1349) were divided into three groups: transient - oliguria resolved within 48 h after the admission day (n = 390 [28.9%]), prolonged - oliguria resolved > 48 h after the admission day (n = 141 [10.5%]), and permanent - oliguria persisting for the whole ICU stay or again present at the end of the ICU stay (n = 818 [60.6%]). ICU and hospital mortality rates were higher in patients with oliguria than in those without, except for patients with transient oliguria who had significantly lower mortality rates than non-oliguric patients. In multilevel analysis, the need for RRT was associated with a significantly higher risk of death (OR = 1.51 [95% CI 1.19-1.91], p = 0.001), but the presence of oliguria on admission was not (OR = 1.14 [95% CI 0.97-1.34], p = 0.103). Conclusions: Oliguria is common in ICU patients and may have a relatively benign nature if only transient. The duration of oliguria and need for RRT are associated with worse outcome.
DOI
10.1186/s13054-020-02858-x
WOS
WOS:000530094700003
Archivio
http://hdl.handle.net/11368/2979075
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85084030262
https://ccforum.biomedcentral.com/articles/10.1186/s13054-020-02858-x
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/4.0/
FVG url
https://arts.units.it/bitstream/11368/2979075/1/s13054-020-02858-x.pdf
Soggetti
  • Mortality

  • Renal replacement the...

  • Urine output

Scopus© citazioni
10
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
15
Data di acquisizione
Mar 23, 2024
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