Clinical outcomes of severe COVID-19 patients receiving early VV-ECMO and the impact of pre-ECMO ventilator use

Int J Artif Organs. 2021 Nov;44(11):861-867. doi: 10.1177/03913988211047604. Epub 2021 Oct 7.

Abstract

Acute respiratory distress syndrome (ARDS) in COVID-19 patients is associated with poor clinical outcomes and high mortality rates, despite the use of mechanical ventilation. Veno-Venous Extracorporeal membrane Oxygenation (VV-ECMO) in these patients is a viable salvage therapy. We describe clinical outcomes and survival rates in 52 COVID-19 patients with ARDS treated with early VV-ECMO at a large, high-volume center ECMO program. Outcomes included arterial blood gases, respiratory parameters, inflammatory markers, adverse events, and survival rates. Patients' mean age was 47.8 ± 12.1 years, 33% were female, and 75% were Hispanic. At the end of study period, 56% (n = 29) of the patients survived and were discharged and 44% (n = 23) of the patients expired. Survival rate was 75.0% (9 out of 12) in patients placed on ECMO prior to mechanical ventilation. Longer duration on mechanical ventilation prior to ECMO intervention was associated with a 31% (aOR = 1.31, 95% CI, 1.00-1.70) increased odds of mortality after adjusting for age, gender, BMI, number of comorbid conditions, and post-ECMO ventilator days. Early and effective ECMO intervention in critical ill COVID-19 patients might be a valuable strategy in critical care settings to increase their odds of survival.

Keywords: ARDS; COVID-19; awake ECMO; early ECMO; mechanical ventilation; mortality; observational.

MeSH terms

  • Adult
  • COVID-19*
  • Extracorporeal Membrane Oxygenation* / adverse effects
  • Female
  • Humans
  • Male
  • Middle Aged
  • Respiratory Distress Syndrome* / diagnosis
  • Respiratory Distress Syndrome* / therapy
  • SARS-CoV-2
  • Ventilators, Mechanical