Lung ultrasound findings in hospitalized COVID-19 patients in relation to venous thromboembolic events: the ECHOVID-19 study

Kristoffer Grundtvig Skaarup, Mats Christian Hojbjerg Lassen, Caroline Espersen, Jannie Norgaard Lind, Niklas Dyrby Johansen, Morten Sengeløv, Alia Saed Alhakak, Anne Bjerg Nielsen, Kirstine Ravnkilde, Raphael Hauser, Liv Borum Schops, Eva Holt, Henning Bundgaard, Christian Hassager, Reza Jabbari, Jorn Carlsen, Ole Kirk, Uffe Bodtger, Matias Greve Lindholm, Lothar WieseOle Peter Kristiansen, Emil Schwarz Walsted, Olav Wendelboe Nielsen, Birgitte Lindegaard, Niels Tonder, Klaus Nielsen Jeschke, Charlotte Suppli Ulrik, Morten Lamberts, Pradeesh Sivapalan, Jannik Pallisgaard, Gunnar Gislason, Kasper Iversen, Jens Ulrik Staehr Jensen, Morten Schou, Soren Helbo Skaarup, Elke Platz, Tor Biering-Sorensen*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Purpose Several studies have reported thromboembolic events to be common in severe COVID-19 cases. We sought to investigate the relationship between lung ultrasound (LUS) findings in hospitalized COVID-19 patients and the development of venous thromboembolic events (VTE). Methods A total of 203 adults were included from a COVID-19 ward in this prospective multi-center study (mean age 68.6 years, 56.7% men). All patients underwent 8-zone LUS, and all ultrasound images were analyzed off-line blinded. Several LUS findings were investigated (total number of B-lines, B-line score, and LUS-scores). Results Median time from admission to LUS examination was 4 days (IQR: 2, 8). The median number of B-lines was 12 (IQR: 8, 18), and 44 (21.7%) had a positive B-line score. During hospitalization, 17 patients developed VTE (4 deep-vein thrombosis, 15 pulmonary embolism), 12 following and 5 prior to LUS. In fully adjusted multivariable Cox models (excluding participants with VTE prior to LUS), all LUS parameters were significantly associated with VTE (total number of B-lines: HR = 1.14, 95% CI (1.03, 1.26) per 1 B-line increase), positive B-line score: HR = 9.79, 95% CI (1.87, 51.35), and LUS-score: HR = 1.51, 95% CI (1.10, 2.07), per 1-point increase). The B-line score and LUS-score remained significantly associated with VTE in sensitivity analyses. Conclusion In hospitalized COVID-19 patients, pathological LUS findings were common, and the total number of B-lines, B-line score, and LUS-score were all associated with VTE. These findings indicate that the LUS examination may be useful in risk stratification and the clinical management of COVID-19. These findings should be considered hypothesis generating. Clinicaltrials.gov ID NCT04377035

Original languageEnglish
JournalJournal of Ultrasound
Volume25
Pages (from-to)457–467
ISSN1971-3495
DOIs
Publication statusPublished - 2022

Keywords

  • COVID-19
  • Lung ultrasound
  • B-lines
  • Venous thromboembolic events
  • PULMONARY CONGESTION
  • DIAGNOSIS
  • PNEUMONIA
  • WUHAN
  • CHINA

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