J Korean Med Sci.  2024 Mar;39(8):e75. 10.3346/jkms.2024.39.e75.

Risk Factors for the Mortality of Patients With Coronavirus Disease 2019 Requiring Extracorporeal Membrane Oxygenation in a Non-Centralized Setting: A Nationwide Study

Affiliations
  • 1Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
  • 2Division of Pulmonary, Allergy and Critical Care Medicine, Hallym University Sacred Heart Hospital, Anyang, Korea
  • 3Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
  • 4BioMedical Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea
  • 5Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Internal Medicine, Transplant Research Center, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea
  • 6Department of Internal Medicine, Pusan National University School of Medicine, Busan, Korea
  • 7Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
  • 8Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
  • 9Department of Critical Care Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
  • 10Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
  • 11Division of Critical Care Medicine, Department of Hospital Medicine, Inha Collage of Medicine, Incheon, Korea
  • 12Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
  • 13Division of Allergy and Pulmonary Medicine, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
  • 14Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Korea
  • 15Department of Internal Medicine, Gyeongsang National University Changwon Hospital, Gyeongsang National University School of Medicine, Changwon, Korea
  • 16Division of Pulmonology and Allergy, Department of Internal Medicine, College of Medicine, Yeungnam University and Regional Center for Respiratory Diseases, Yeungnam University Medical Center, Daegu, Korea
  • 17Division of Pulmonology and Critical Care Medicine, Wonkwang University Hospital, Iksan, Korea
  • 18Division of Pulmonary, and Critical Care Medicine, Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Korea
  • 19Department of Pulmonology and Critical Care Medicine, Chosun University Hospital, Gwangju, Korea
  • 20Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chungnam National University College of Medicine, Chungnam National University Hospital, Daejeon, Korea
  • 21Department of Internal Medicine, Chungnam National University College of Medicine, Chungnam National University Sejong Hospital, Sejong, Korea

Abstract

Background
Limited data are available on the mortality rates of patients receiving extracorporeal membrane oxygenation (ECMO) support for coronavirus disease 2019 (COVID-19). We aimed to analyze the relationship between COVID-19 and clinical outcomes for patients receiving ECMO.
Methods
We retrospectively investigated patients with COVID-19 pneumonia requiring ECMO in 19 hospitals across Korea from January 1, 2020 to August 31, 2021. The primary outcome was the 90-day mortality after ECMO initiation. We performed multivariate analysis using a logistic regression model to estimate the odds ratio (OR) of 90-day mortality. Survival differences were analyzed using the Kaplan–Meier (KM) method.
Results
Of 127 patients with COVID-19 pneumonia who received ECMO, 70 patients (55.1%) died within 90 days of ECMO initiation. The median age was 64 years, and 63% of patients were male. The incidence of ECMO was increased with age but was decreased after 70 years of age. However, the survival rate was decreased linearly with age. In multivariate analysis, age (OR, 1.048; 95% confidence interval [CI], 1.010–1.089; P = 0.014) and receipt of continuous renal replacement therapy (CRRT) (OR, 3.069; 95% CI, 1.312–7.180; P = 0.010) were significantly associated with an increased risk of 90-day mortality. KM curves showed significant differences in survival between groups according to age (65 years) (log-rank P = 0.021) and receipt of CRRT (log-rank P = 0.004).
Conclusion
Older age and receipt of CRRT were associated with higher mortality rates among patients with COVID-19 who received ECMO.

Keyword

COVID-19; Extracorporeal Membrane Oxygenation; Mortality; Age; Continuous Renal Replacement Therapy

Figure

  • Fig. 1 ECMO use and survival rate at 90 days according to the age group.ECMO = extracorporeal membrane oxygenation.

  • Fig. 2 Kaplan–Meier survival curves according to (A) age (65 years) (log-rank P = 0.021) and (B) receipt of CRRT (log-rank P = 0.004).CRRT = continuous renal replacement therapy.

  • Fig. 3 Subgroup analysis of Kaplan–Meier curves according to receipt of CRRT for (A) patients aged < 65 years (log-rank P < 0.001) and (B) patients aged ≥ 65 years (log-rank P = 0.504).CRRT = continuous renal replacement therapy.


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