Cardiothoracic & vascular anesthesia

Continuous Urine Output-Based Alert Identifies Cardiac Surgery–associated Acute Kidney Injury Earlier Than Serum Creatinine: A Prospective and Retrospective Observational Study

J Cardiothorac Vasc AnesthPublished Prospective and retrospective observational study

Main finding · AKI diagnosis by stage and timingResult — go to the resultTime to diagnosis earlier (UO stage ≥1 vs SCr stage ≥2) 33.6 hours

Authors' conclusion

AKI Alert, based on continuous UO and enabled by active drain line clearance, detected AKI stages 1 and 2 before SCr criteria.

Study context

Population
Cardiac surgery patients, 9 tertiary centresanalysed
Participants
522 patients
Exposure
Continuous urine output (UO)-based acute kidney injury (AKI) Alert vs serum creatinine (SCr) criteria
Outcome
AKI diagnosis by stage and timing
Methodological detailsmulticentre
  • Multicentre

Main finding

As reported in the abstract

Time to diagnosis earlier (UO stage ≥1 vs SCr stage ≥2)

33.6 hours

By group

UO

32.18%, 30.46%, 3.64%

AKI stages 1, 2, 3

SCr

33.72%, 4.60%, 3.26%

AKI stages 1, 2, 3

Observational data: associations, not effects.

Further findings

Associations of AKI Alert with outcomes

Stage 1 alert significantly associated with increased ICU and hospital LOS and CRRT
Stage ≥2 alerts associated with mortality

Parts of this Brief are withheld: the automatic checks could not confirm them against the abstract.

Original publication

Continuous Urine Output-Based Alert Identifies Cardiac Surgery–associated Acute Kidney Injury Earlier Than Serum Creatinine: A Prospective and Retrospective Observational Study. J Cardiothorac Vasc Anesth. Published 19 June 2024. doi:10.1053/j.jvca.2024.06.021

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