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Published in: Annals of Intensive Care 1/2018

Open Access 01-12-2018 | Research

Ischemic and hemorrhagic brain injury during venoarterial-extracorporeal membrane oxygenation

Authors: Loïc Le Guennec, Clémentine Cholet, Florent Huang, Matthieu Schmidt, Nicolas Bréchot, Guillaume Hékimian, Sébastien Besset, Guillaume Lebreton, Ania Nieszkowska, Pascal Leprince, Alain Combes, Charles-Edouard Luyt

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

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Abstract

Background

Structural neurological complications (ischemic stroke and intracranial bleeding) and their risk factors in patients receiving venoarterial-extracorporeal membrane oxygenation (VA-ECMO) are poorly described. Our objective was to describe frequencies, outcomes and risk factors for neurological complications (ischemic stroke and intracranial bleeding) in patients receiving VA-ECMO.

Methods

Retrospective observational study conducted, from 2006 to 2014, in a tertiary referral center on patients who developed a neurological complication(s) on VA-ECMO.

Results

Among 878 VA-ECMO-treated patients, 65 (7.4%) developed an ECMO-related brain injury: 42 (5.3%) ischemic strokes and 20 (2.8%) intracranial bleeding, occurring after a median [25th;75th percentile] of 11 [6;18] and 5 [2;9] days of support, respectively. Intracranial bleeding but not ischemic stroke was associated with higher mortality. Multivariable analysis retained only platelet level > 350 giga/L as being associated with ischemic stroke. Female sex, central VA-ECMO and platelets < 100 giga/L at ECMO start were independently associated with intracranial bleeding with respective odds ratios [95% CI] of 2.9 [1.1–7.5], 3.8 [1.1–10.2] and 3.7 [1.4–9.7]. In a nested case–control study, rapid CO2-level change from before-to-after ECMO start also seemed to be associated with intracranial bleeding.

Conclusions

Neurological events are frequent in VA-ECMO-treated patients. Ischemic stroke is the most frequent, occurs after 1 week on ECMO support, has no specific risk factor and is not associated with higher mortality. Intracranial bleeding occurs earlier and is associated with female sex, central VA-ECMO, low platelet count and rapid CO2 change at ECMO start, and high mortality.

Level of evidence

This study provides Class IV evidence that central VA-ECMO, low platelet count and rapid CO2 change at ECMO start are associated with intracranial bleeding and high mortality.
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Metadata
Title
Ischemic and hemorrhagic brain injury during venoarterial-extracorporeal membrane oxygenation
Authors
Loïc Le Guennec
Clémentine Cholet
Florent Huang
Matthieu Schmidt
Nicolas Bréchot
Guillaume Hékimian
Sébastien Besset
Guillaume Lebreton
Ania Nieszkowska
Pascal Leprince
Alain Combes
Charles-Edouard Luyt
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/s13613-018-0475-6

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