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Neutrophil to Lymphocyte Ratio and C-Reactive Protein Level As Prognostic Markers in Mild Versus Severe Covid-19 Patients Publisher



Mousavinasab SD1, 2 ; Mardani R3 ; Azadani HN4 ; Zali F5 ; Vasmehjani AA4 ; Sabeti S6 ; Darazam IA7 ; Ahmadi N8
Authors
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Authors Affiliations
  1. 1. Viral vaccine research center, Pasteur Institute of Iran, Tehran, Iran
  2. 2. Department of Research and Development, Production and Research Complex, Pasteur Institute, Tehran, Iran
  3. 3. Department of Biochemistry, Pasteur Institute of Iran, Tehran, Iran
  4. 4. Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  5. 5. Department of Clinical Biochemistry, Faculty of Medicine, Tehran University of Medical Science, Tehran, Iran
  6. 6. Pathology Ward, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  7. 7. Infectious Diseases and Tropical Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  8. 8. Proteomics Research Center, Department of Medical Lab Technology, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran

Source: Gastroenterology and Hepatology from Bed to Bench Published:2020


Abstract

Aim: This research aimed to investigate neutrophil to lymphocyte ratio (NLR) with C-reactive protein to identify potential clinical predictors and analyze differences among severe and non-severe COVID-19 patients. Background: NLR and CRP are established markers that reflect systemic inflammatory, and these parameters alter in patients with novel coronavirus (SARS-CoV-2) pneumonia (COVID-19). Methods: A population of patients with COVID-19 referred to Loghman Hospital in Tehran was analyzed. The baseline data of laboratory examinations, including NLR and CRP levels, was collected. Pearson analysis was used to assess the independent relationship between the NLR with disease severity and CRP levels. Results: COVID-19 cases comprised 14 (20%) patients with severe disease and 56 (80%) with non-severe infection. The mean values of WBC, NEU, LYM, and NLR of the severe patients were significantly higher than those of the non-severe patients. Forty-six patients (65.7%) had NLR >1, and the remaining patients had NLR <1. Plasma CRP levels were higher in severe cases than in non-severe cases, and this difference was significant. The results showed that NLR was positively correlated with CRP levels (R=0.23) and negatively correlated with WBC (R=-0.38). CRP (AUC = 0.97, 95% CI: 0.95-0.99) and NLR (AUC = 0.87, 95% CI: 0.81-0.93) had very good accuracy in predicting the severity of COVID-19 disease. Conclusion: The findings of this study indicated that the integration of NLR and CRP may lead to improved predictions and is recommended as a valuable early marker to assess prognosis and evaluate the severity of clinical symptoms in COVID-19 patients. © 2020 RIGLD, Research Institute for Gastroenterology and Liver Diseases.
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