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  4. Endotoxin Activity in Patients With Extracorporeal Membrane Oxygenation Life Support: An Observational Pilot Study
 
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Endotoxin Activity in Patients With Extracorporeal Membrane Oxygenation Life Support: An Observational Pilot Study

Journal
Frontiers in medicine
Journal Volume
8
Date Issued
2021
Author(s)
CHEN-TSE LEE  
CHIH-HSIEN WANG  
Chan, Wing-Sum
Tsai, Yun-Yi
TZU-JUNG WEI  
Lai, Chien-Heng
YU-CHANG YEH  
YIH-SHARNG CHEN  
MING-JIUH WANG  
DOI
10.3389/fmed.2021.772413
URI
https://scholars.lib.ntu.edu.tw/handle/123456789/607833
URL
https://scholars.lib.ntu.edu.tw/handle/123456789/592414
Abstract
Background: Extracorporeal membrane oxygenation (ECMO) life support has become an integral part of intensive care. The endotoxin activity assay (EAA) is a useful test to measure endotoxemia severity in whole blood. To date, no information is available regarding the EAA levels and their effect on clinical outcomes in critically ill patients with ECMO support. Methods: This prospective observational pilot study enrolled adult critically ill patients with ECMO support from August 2019 to December 2020. The EAA levels were measured within 24 h (T1), and at 25-48 (T2), 49-72 (T3), and 73-96 h (T4) after ECMO initiation. This study primarily aimed to investigate the incidence of high EAA levels (≥0.6) at each time point. Subsequent exploratory analyses were conducted to compare the EAA levels of venoarterial ECMO (VA-ECMO) patients between 30-day survivors and non-survivors. Post-hoc analysis was performed to compare the clinical outcomes of VA-ECMO patients with elevated EAA levels at T3 (vs. T1) and those without elevated EAA levels. Results: A total of 39 VA-ECMO patients and 15 venovenous ECMO (VV-ECMO) patients were enrolled. At T1, the incidence of high EAA level (≥0.6) was 42% in VV-ECMO patients and 9% in VA-ECMO patients (P = 0.02). At T2, the incidence of high EAA level was 40% in VV-ECMO patients and 5% in VA-ECMO patients (P = 0.005). In VA-ECMO patients, EAA levels at T3 were significantly higher in 30-day non-survivors than in survivors (median [interquartile range]: 0.49 [0.37-0.93] vs. 0.31 [0.19-0.51], median difference 0.16 [95% confidence interval [CI], 0.02-0.31]; P = 0.024). Moreover, VA-ECMO patients with elevated EAA levels at T3 (vs. T1) had lower 30-day survival than patients without elevated EAA levels (39 vs. 83%, P = 0.026) and fewer ECMO free days by day 30 (median: 3 vs. 23 days, median difference 12 days [95% CI, 0-22]; P = 0.028). Conclusions: A certain proportion of patients experienced high EAA levels (≥0.6) after VV-ECMO or VA-ECMO initiation. VA-ECMO patients with an elevated EAA level at 49-72 h were associated with poor clinical outcomes.
Subjects
critical care; endotoxin; extracorporeal membrane oxygenation (ECMO); infection; survival
Publisher
FRONTIERS MEDIA SA
Type
journal article

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