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. 2023 Jan;47(1):180-186.
doi: 10.1111/aor.14382. Epub 2022 Aug 20.

Prediction of successful veno-venous extracorporeal life support liberation using the oxygen challenge test

Gary P Misselbrook  1   2   3 , Hussein Kanji  1 , Sonny Thiara  1 , Juan J Ronco  1 , Simmie Kalan  1 , Leo Chen  4 , Amandeep Sidhu  1
Affiliations

Prediction of successful veno-venous extracorporeal life support liberation using the oxygen challenge test

Gary P Misselbrook et al. Artif Organs. 2023 Jan.

Abstract

Background: The oxygen challenge test (OCT) is an underutilized measure of lung recovery, easily performed prior to proceeding with a trial-off V-V ECLS as part of a weaning algorithm. Evidence-based thresholds for OCT results which support continuing with V-V ECLS weaning are lacking, making interpretation of these tests challenging in clinical practice.

Methods: We performed a retrospective review of patients commenced on V-V ECLS as a bridge-to-recovery at Vancouver General Hospital from 2015-2019. The absolute PaO2 post-OCT and change in PaO2 proportional to incremental FiO2 change on the ventilator (∆PaO2 ) were evaluated as predictive screening metrics for identifying conditions favorable for successful trial-off of V-V ECLS.

Results: An optimal cut-off of PaO2 ≥ 240 mm Hg post-OCT (AUC 0.77) and ∆PaO2 ≥ 250 mm Hg (AUC 0.76) was identified as a threshold for predicting successful trials-off. A total of 26 and 24 patients achieved post-OCT PaO2 and ∆PaO2 thresholds, and 100% of these patients were liberated successfully from ECLS during their admission.

Conclusions: The OCT can serve as an effective screen of shunt reduction and native lung recovery which can be used alongside other measures of ventilation to assess for suitability of liberation from V-V ECLS prior to a trial-off. Achieving a PaO2 ≥ 240 mm Hg post-OCT is a strong prognostic indicator for successful liberation from V-V ECLS during ICU admission.

Keywords: V-V ECLS; extracorporeal membrane oxygenation; oxygen challenge test; respiratory failure; weaning.

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References

REFERENCES

    1. Schmidt M, Franchineau G, Coombes A. Recent advances in venovenous extracorporeal membrane oxygenation for severe acute respiratory distress syndrome. Curr Opin Crit Care. 2019;25(1):71-6.
    1. Combes A, Hajage D, Capellier G, Demoule A, Lavoué S, Guervilly C, et al. Extracorporeal membrane oxygenation for severe acute respiratory distress syndrome. N Engl J Med. 2018;378(21):1965-75.
    1. Vasques F, Romitti F, Gattinoni L, Camporota L. How I wean patients from veno-venous extra-corporeal membrane oxygenation. Crit Care. 2019;23:316.
    1. Aissaoui N, El-Banayosy A, Combes A. How to wean a patient from veno-arterial extracorporeal membrane oxygenation. Intensive Care Med. 2015;41:902-5.
    1. Grant AA, Hart VJ, Lineen EB, Badiye A, Byers PM, Patel A, et al. A weaning protocol for venovenous extracorporeal membrane oxygenation with a review of the literature. Artif Organs. 2018;42(6):605-10.

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