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.

The clinical relevance of oliguria in the critically ill patient: Analysis of a large observational database / Vincent, J.-L., Ferguson, A., Pickkers, P., Jakob, S.M., Jaschinski, U., Almekhlafi, G.A., Leone, M., Mokhtari, M., Fontes, L.E., Bauer, P.R., Sakr, Y., Tomas, E., Bibonge, E.A., Charra, B., Faroudy, M., Doedens, L., Farina, Z., Adler, D., Balkema, C., Kok, A., et al.. - In: CRITICAL CARE. - ISSN 1364-8535. - 24:1(2020), pp. 171-185. [10.1186/s13054-020-02858-x]

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

Girardis M.;
2020

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.
2020
24
1
171
185
The clinical relevance of oliguria in the critically ill patient: Analysis of a large observational database / Vincent, J.-L., Ferguson, A., Pickkers, P., Jakob, S.M., Jaschinski, U., Almekhlafi, G.A., Leone, M., Mokhtari, M., Fontes, L.E., Bauer, P.R., Sakr, Y., Tomas, E., Bibonge, E.A., Charra, B., Faroudy, M., Doedens, L., Farina, Z., Adler, D., Balkema, C., Kok, A., et al.. - In: CRITICAL CARE. - ISSN 1364-8535. - 24:1(2020), pp. 171-185. [10.1186/s13054-020-02858-x]
Vincent, J. -L.; Ferguson, A.; Pickkers, P.; Jakob, S. M.; Jaschinski, U.; Almekhlafi, G. A.; Leone, M.; Mokhtari, M.; Fontes, L. E.; Bauer, P. R.; Sa...espandi
File in questo prodotto:
File Dimensione Formato  
2020 VincentCCAreICONoliguria.pdf

Open access

Tipologia: VOR - Versione pubblicata dall'editore
Licenza: [IR] creative-commons
Dimensione 760.4 kB
Formato Adobe PDF
760.4 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1208787
Citazioni
  • ???jsp.display-item.citation.pmc??? 18
  • Scopus 26
  • ???jsp.display-item.citation.isi??? 22
social impact