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Published in: Annals of Intensive Care 1/2021

01-12-2021 | Transthoracic Echocardiography | Research

Automated left atrial strain analysis for predicting atrial fibrillation in severe COVID-19 pneumonia: a prospective study

Authors: Christophe Beyls, Alexis Hermida, Yohann Bohbot, Nicolas Martin, Christophe Viart, Solenne Boisgard, Camille Daumin, Pierre Huette, Hervé Dupont, Osama Abou-Arab, Yazine Mahjoub

Published in: Annals of Intensive Care | Issue 1/2021

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Abstract

Background

Atrial fibrillation (AF) is the most documented arrhythmia in COVID-19 pneumonia. Left atrial (LA) strain (LAS) analysis, a marker of LA contractility, have been associated with the development of AF in several clinical situations. We aimed to assess the diagnostic ability of LA strain parameters to predict AF in patients with severe hypoxemic COVID-19 pneumonia. We conducted a prospective single center study in Amiens University Hospital intensive care unit (ICU) (France). Adult patients with severe or critical COVID-19 pneumonia according to the World Health Organization definition and in sinus rhythm were included. Transthoracic echocardiography was performed within 48 h of ICU admission. LA strain analysis was performed by an automated software. The following LA strain parameters were recorded: LA strain during reservoir phase (LASr), LA strain during conduit phase (LAScd) and LA strain during contraction phase (LASct). The primary endpoint was the occurrence of AF during ICU stay.

Results

From March 2020 to February of 2021, 79 patients were included. Sixteen patients (20%) developed AF in ICU. Patients of the AF group were significantly older with a higher SAPS II score than those without AF. LAScd and LASr were significantly more impaired in the AF group compared to the other group (− 8.1 [− 6.3; − 10.9] vs. − 17.2 [− 5.0; − 10.2] %; P < 0.001 and 20.2 [12.3;27.3] % vs. 30.5 [23.8;36.2] %; P = 0.002, respectively), while LASct did not significantly differ between groups (p = 0.31). In a multivariate model, LAScd and SOFA cv were significantly associated with the occurrence of AF. A LAScd cutoff value of − 11% had a sensitivity of 76% and a specificity of 75% to identify patients with AF. The 30-day cumulative risk of AF was 42 ± 9% with LAScd > − 11% and 8 ± 4% with LAScd ≤ − 11% (log rank test P value < 0.0001).

Conclusion

For patients with severe COVID-19 pneumonia, development of AF during ICU stay is common (20%). LAS parameters seem useful in predicting AF within the first 48 h of ICU admission.
Trial registration: NCT04354558.
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Metadata
Title
Automated left atrial strain analysis for predicting atrial fibrillation in severe COVID-19 pneumonia: a prospective study
Authors
Christophe Beyls
Alexis Hermida
Yohann Bohbot
Nicolas Martin
Christophe Viart
Solenne Boisgard
Camille Daumin
Pierre Huette
Hervé Dupont
Osama Abou-Arab
Yazine Mahjoub
Publication date
01-12-2021
Publisher
Springer International Publishing
Published in
Annals of Intensive Care / Issue 1/2021
Electronic ISSN: 2110-5820
DOI
https://doi.org/10.1186/s13613-021-00955-w

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