Organ support & nutrition

The furosemide stress test predicts successful discontinuation of continuous renal replacement therapy in critically ill patients with acute kidney injury

J Crit CarePublished Diagnostic accuracy study

Authors' conclusion

A urine output >188 mL in the first 2 h after FST predicted successful discontinuation of CRRT.

Study context

Population
Critically ill patients with AKI undergoing an initial attempt at discontinuation of continuous renal replacement therapy (CRRT)
Participants
55 patients
Comparison
2-h urine output after furosemide stress test (FST) vs 24-h urine output on the previous day vs urine NGAL for predicting successful CRRT discontinuation
Outcome
Successful discontinuation of CRRT (alive without RRT for 7 days after discontinuation)
Follow-up
7 days
Methodological detailsprospective, single-centre
  • Prospective
  • Single-centre

Performance

As reported in the abstract

Prediction of successful CRRT discontinuation
Test or modelAUCOptimal cut-offSensitivitySpecificity
FST 2-h urine output0.913188 mL0.8000.920
24-h urine output0.739
Urine NGAL0.725

AUC

FST 2-h urine output0.913
24-h urine output0.739
Urine NGAL0.725

Optimal cut-off

FST 2-h urine output188 mL
24-h urine output— not stated in the abstract
Urine NGAL— not stated in the abstract

Sensitivity

FST 2-h urine output0.800
24-h urine output— not stated in the abstract
Urine NGAL— not stated in the abstract

Specificity

FST 2-h urine output0.920
24-h urine output— not stated in the abstract
Urine NGAL— not stated in the abstract
  • FST 2-h urine output vs 24-h urine output: P = 0.003 — significantly greater AUC for FST
  • FST 2-h urine output vs Urine NGAL: P = 0.020 — significantly greater AUC for FST
Successful discontinuation of CRRT
30 of 55

Original publication

The furosemide stress test predicts successful discontinuation of continuous renal replacement therapy in critically ill patients with acute kidney injury. J Crit Care. Published 9 October 2024. doi:10.1016/j.jcrc.2024.154929

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