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Role of interleukin 6 as a predictive factor for a severe course of Covid-19: retrospective data analysis of patients from a long-term care facility during Covid-19 outbreak.
Sabaka, P; Koscálová, A; Straka, I; Hodosy, J; Lipták, R; Kmotorková, B; Kachlíková, M; Kusnírová, A.
  • Sabaka P; Department of Infectology and Geographical Medicine, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovakia. petersabaka@gmail.com.
  • Koscálová A; Department of Infectology and Geographical Medicine, Faculty of Medicine, Slovak Medical University, Bratislava, Slovakia.
  • Straka I; 2nd Department of Neurology, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovakia.
  • Hodosy J; Emergency Department, University Hospital in Bratislava, Bratislava, Slovakia.
  • Lipták R; Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovakia.
  • Kmotorková B; Emergency Department, University Hospital in Bratislava, Bratislava, Slovakia.
  • Kachlíková M; Institute of Physiology, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovakia.
  • Kusnírová A; Department of Infectology and Geographical Medicine, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovakia.
BMC Infect Dis ; 21(1): 308, 2021 Mar 29.
Article in English | MEDLINE | ID: covidwho-1158199
ABSTRACT

BACKGROUND:

Covid-19 is a disease with high morbidity and mortality among elderly residents of long-term care facilities (LTCF). During an outbreak of SARS-CoV-2 infection in the LTCF an effective screening tool is essential to identify the patients at risk for severe disease. We explored the role of interleukin 6 (IL-6) as a predictor for severe disease during the outbreak of Covid-19 in one LTCF in Slovakia.

METHODS:

We conducted a retrospective data analysis of cases of COVID-19, diagnosed during the outbreak in one LTCF in Slovakia between April 11, 2020, and May 5, 2020. Within 24 h after the diagnosis of Covid-19, clinical and laboratory screening was performed in the LTCF to identify patients in need of hospitalization. Patients with oxygen saturation below 90% were immediately referred to the hospital. Patients staying in the LFTC were monitored daily and those that developed hypoxemia were transferred to the hospital. We analyzed the association between the IL-6 at the initial assessment and development of hypoxemia during follow up and determined the cut-off of the IL-6 able to predict the development of hypoxemia requiring oxygen therapy.

RESULTS:

Fifty-three patients (11 men, 42 women) with diagnosed Covid-19 were included in the analysis. 19 (53%) patients developed hypoxemia during the disease. Patients with hypoxemia had significantly higher concentrations of IL-6, C-reactive protein, procalcitonin, fibrinogen, total bilirubin, aspartate aminotransferase and alanine aminotransferase at initial screening. ROC analyses identified IL-6 as the most robust predictor of hypoxemia. The concentration of IL-6 > 24 pg/mL predicted the development of hypoxemia with the sensitivity of 100% and specificity of 88.9%. The positive and negative predictive values were 76.9, and 100% respectively.

CONCLUSIONS:

The concentration of IL-6 > 24 pg/mL at initial assessment predicted the development of hypoxemia requiring hospitalization with excellent sensitivity and good specificity. IL-6 appears as a potential predictor for the development of the severe Covid-19 and might serve for early identification of patients in need of hospitalization. Further studies are needed to evaluate the robustness of the use of IL-6 as an effective screening tool for the severe course of Covid-19.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Interleukin-6 / Long-Term Care / SARS-CoV-2 / COVID-19 Type of study: Cohort study / Diagnostic study / Experimental Studies / Observational study / Prognostic study Topics: Long Covid Limits: Aged / Female / Humans / Male Language: English Journal: BMC Infect Dis Journal subject: Communicable Diseases Year: 2021 Document Type: Article Affiliation country: S12879-021-05945-8

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Interleukin-6 / Long-Term Care / SARS-CoV-2 / COVID-19 Type of study: Cohort study / Diagnostic study / Experimental Studies / Observational study / Prognostic study Topics: Long Covid Limits: Aged / Female / Humans / Male Language: English Journal: BMC Infect Dis Journal subject: Communicable Diseases Year: 2021 Document Type: Article Affiliation country: S12879-021-05945-8