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Incidence, risk factors and 90-day mortality of patients with acute kidney injury in Finnish intensive care units: the FINNAKI study
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2013 (English)In: Intensive Care Medicine, ISSN 0342-4642, E-ISSN 1432-1238, Vol. 39, no 3, 420-428 p.Article in journal (Refereed) Published
Abstract [en]


We aimed to determine the incidence, risk factors and outcome of acute kidney injury (AKI) in Finnish ICUs.


This prospective, observational, multi-centre study comprised adult emergency admissions and elective patients whose stay exceeded 24 h during a 5-month period in 17 Finnish ICUs. We defined AKI first by the Acute Kidney Injury Network (AKIN) criteria supplemented with a baseline creatinine and second with the Kidney Disease: Improving Global Outcomes (KDIGO) criteria. We screened the patients' AKI status and risk factors for up to 5 days.


We included 2,901 patients. The incidence (95 % confidence interval) of AKI was 39.3 % (37.5-41.1 %). The incidence was 17.2 % (15.8-18.6 %) for stage 1, 8.0 % (7.0-9.0 %) for stage 2 and 14.1 % (12.8-15.4 %) for stage 3 AKI. Of the 2,901 patients 296 [10.2 % (9.1-11.3 %)] received renal replacement therapy. We received an identical classification with the new KDIGO criteria. The population-based incidence (95 % CI) of ICU-treated AKI was 746 (717-774) per million population per year (reference population: 3,671,143, i.e. 85 % of the Finnish adult population). In logistic regression, pre-ICU hypovolaemia, diuretics, colloids and chronic kidney disease were independent risk factors for AKI. Hospital mortality (95 % CI) for AKI patients was 25.6 % (23.0-28.2 %) and the 90-day mortality for AKI patients was 33.7 % (30.9-36.5 %). All AKIN stages were independently associated with 90-day mortality.


The incidence of AKI in the critically ill in Finland was comparable to previous large multi-centre ICU studies. Hospital mortality (26 %) in AKI patients appeared comparable to or lower than in other studies.

Place, publisher, year, edition, pages
2013. Vol. 39, no 3, 420-428 p.
National Category
Medical and Health Sciences
URN: urn:nbn:se:uu:diva-216190DOI: 10.1007/s00134-012-2796-5PubMedID: 23291734OAI: oai:DiVA.org:uu-216190DiVA: diva2:689190
Available from: 2014-01-20 Created: 2014-01-20 Last updated: 2014-01-23Bibliographically approved

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Tenhunen, Jyrki
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