During the Omicron Pandemic Wave, the Severe Systemic Inflammatory Status of COVID-19 Indicated a Higher Risk of In-Hospital Mortality and Mediated the Clinical Efficacy of Corticosteroids

Yu Cao,1 Ying Han,2 Jiangping Wu,1 Jianping Sun,3 Yanchao Dai,3 Guifang Qiao,3 Kang Li,3 Ang Li,3 Yonghong Zhang,4 Yingmin Ma,5,* Qingkun Song1,3,* 1Department of Clinical Epidemiology, Beijing Youan Hospital, Capital Medical University, Beijing, People’s Republic of China; 2Center of Liver Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, People’s Republic of China; 3Center of Biobank, Beijing Youan Hospital, Capital Medical University, Beijing, People’s Republic of China; 4Department of Hepatic Intervention, Beijing Youan Hospital, Capital Medical University, Beijing, People’s Republic of China; 5Department of Respiratory and Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, People’s Republic of China*These authors contributed equally to this workCorrespondence: Yingmin Ma, Department of Respiratory and Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Youanmen Wai 8, Fengtai District, Beijing, 100069, People’s Republic of China, Tel/Fax +86-10-83997022, Email ma.yingmin@163.com Qingkun Song, Department of Clinical Epidemiology, Beijing Youan Hospital, Capital Medical University, Youanmen Wai 8, Fengtai District, Beijing, 100069, People’s Republic of China, Tel/Fax +86-10-83997022, Email songqingkun@ccmu.edu.cnBackground: For the distinct immune/inflammatory responses from Omicron variant infection, this study aimed to investigate the diagnostic efficacy of systemic inflammatory indicators and the clinical efficacy of corticosteroids on the in-hospital mortality among COVID-19 patients.Methods: Under a retrospective cohort study, 1081 COVID-19 patients were recruited from Beijing Youan Hospital, Capital Medical University between November 16, 2022 and January 30, 2023. We chose neutrophil-to-lymphocyte ratio (NLR), CRP-to-lymphocyte ratio (CLR), and CRP-to-albumin ratio (CAR) as the systemic inflammatory indicators. Receiver operating curve (ROC) and multivariate logistic regression analysis were used to determine the diagnostic efficacy of systemic inflammatory indicators and the association between systemic inflammatory indicators and in-hospital mortality.Results: Among 684 patients included in analysis, 96 died during hospitalization. NLR, CLR and CAR performed well (with an area under the curve (AUC) greater than 0.75) in discriminating in-hospital mortality among COVID-19 patients. The severe status of systemic inflammation, with optimal cut-off value derived from ROC analysis, significantly associated higher risk of in-hospital mortality (OR = 3.81 for NLR ≥ 6.131; OR = 3.76 for CLR ≥ 45.455; OR = 5.10 for CAR ≥ 1.436). Corticosteroids use within 72 hours of admission increased the in-hospital mortality 2.88-fold for COVID-19 patients. In the subgroup of patients with severe systemic inflammation, corticosteroids increased the risk of in-hospital mortality (OR = 2.11 for NLR, p = 0.055; OR = 2.94 for CLR, p = 0.005; OR = 2.31 for CAR, p = 0.036).Conclusion: Systemic inflammatory indicators had good diagnostic performance for in-hospital mortality. Patients with severe systemic inflammatory status should not receive corticosteroid treatment and further studies are warranted for confirmation.Keywords: COVID-19, systemic inflammatory indicators, in-hospital mortality, anti-inflammatory treatment