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Annals of Intensive Care
Published in: Annals of Intensive Care 1/2018

Open Access 01-12-2018 | Research

ICU survival and need of renal replacement therapy with respect to AKI duration in critically ill patients

Authors: A. S. Truche, S. Perinel Ragey, B. Souweine, S. Bailly, L. Zafrani, L. Bouadma, C. Clec’h, M. Garrouste-Orgeas, G. Lacave, C. Schwebel, F. Guebre-Egziabher, C. Adrie, A. S. Dumenil, Ph. Zaoui, L. Argaud, S. Jamali, D. Goldran Toledano, G. Marcotte, J. F. Timsit, M. Darmon

Published in: Annals of Intensive Care | Issue 1/2018

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Abstract

Background

Transient and persistent acute kidney injury (AKI) could share similar physiopathological mechanisms. The objective of our study was to assess prognostic impact of AKI duration on ICU mortality.

Design

Retrospective analysis of a prospective database via cause-specific model, with 28-day ICU mortality as primary end point, considering discharge alive as a competing event and taking into account time-dependent nature of renal recovery. Renal recovery was defined as a decrease of at least one KDIGO class compared to the previous day.

Setting

23 French ICUs.

Patients

Patients of a French multicentric observational cohort were included if they suffered from AKI at ICU admission between 1996 and 2015.

Intervention

None.

Results

A total of 5242 patients were included. Initial severity according to KDIGO creatinine definition was AKI stage 1 for 2458 patients (46.89%), AKI stage 2 for 1181 (22.53%) and AKI stage 3 for 1603 (30.58%). Crude 28-day ICU mortality according to AKI severity was 22.74% (n = 559), 27.69% (n = 327) and 26.26% (n = 421), respectively. Renal recovery was experienced by 3085 patients (58.85%), and its rate was significantly different between AKI severity stages (P < 0.01). Twenty-eight-day ICU mortality was independently lower in patients experiencing renal recovery [CSHR 0.54 (95% CI 0.46–0.63), P < 0.01]. Lastly, RRT requirement was strongly associated with persistent AKI whichever threshold was chosen between day 2 and 7 to delineate transient from persistent AKI.

Conclusions

Short-term renal recovery, according to several definitions, was independently associated with higher mortality and RRT requirement. Moreover, distinction between transient and persistent AKI is consequently a clinically relevant surrogate outcome variable for diagnostic testing in critically ill patients.
Appendix
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Metadata
Title
ICU survival and need of renal replacement therapy with respect to AKI duration in critically ill patients
Authors
A. S. Truche
S. Perinel Ragey
B. Souweine
S. Bailly
L. Zafrani
L. Bouadma
C. Clec’h
M. Garrouste-Orgeas
G. Lacave
C. Schwebel
F. Guebre-Egziabher
C. Adrie
A. S. Dumenil
Ph. Zaoui
L. Argaud
S. Jamali
D. Goldran Toledano
G. Marcotte
J. F. Timsit
M. Darmon
Publication date
01-12-2018
Publisher
Springer International Publishing
Published in
Annals of Intensive Care / Issue 1/2018
Electronic ISSN: 2110-5820
DOI
https://doi.org/10.1186/s13613-018-0467-6

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