COMPUTED TOMOGRAPHY-BASED ASSOCIATION OF HEMATOLOGICAL PARAMETERS AND SYSTEMIC INFLAMMATION MARKERS WITH COVID-19 SEVERITY IN HOSPITALIZED PATIENTS
- Authors: Дьякова M.1, Makarova A.V.1, Rubtsova O.L.1, Esmedlyaeva D.S.1, Yablonskiy P.K.1,2
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Affiliations:
- St. Petersburg Research Institute of Phthisiopulmonology, St. Petersburg, Russian Federation
- St. Petersburg University, St. Petersburg, Russian Federation
- Section: ORIGINAL ARTICLES
- Submitted: 13.10.2025
- Accepted: 10.03.2026
- URL: https://iimmun.ru/iimm/article/view/18040
- DOI: https://doi.org/10.15789/2220-7619-CTA-18040
- ID: 18040
Cite item
Full Text
Abstract
Laboratory data are important for confirming diagnosis, assessing COVID-19 progression, and determining treatment measures. The aim of this study was to evaluate the associations of hematological, coagulation parameters, and systemic inflammatory markers with COVID-19 severity according to computed tomography data in hospitalized patients. Materials and methods. Clinical blood test parameters were assessed in 356 patients with COVID-19. Results. Patients with severe vs. minimal and moderate lung tissue damage have a significant increase in the absolute leukocyte count, the relative and absolute number of neutrophils, and a decrease in the relative number of monocytes and lymphocytes. These differences are also observed in patients with moderate vs. minimal lung tissue damage, except for the absolute leukocyte count. However, the latter as well as the relative number of neutrophils and lymphocytes in patients with minimal and moderate lung tissue damage, along with the absolute number of neutrophils and the relative number of monocytes in all patients were within the reference range. In COVID-19 patients with severe lung tissue damage, markers of systemic inflammation (neutrophil-lymphocytic index, platelet-lymphocytic index, systemic inflammatory response index, systemic inflammation index and cumulative systemic inflammation index) were higher than in those with the minimum and average volume, and the monocyte-lymphocyte index is higher than in those with the average volume of lung tissue damage. At the same time, in patients with minimal lesion volume, neutrophil-lymphocyte index and systemic inflammation index were at lower level, than in case of average volume of lung tissue lesion. Conclusion. The study revealed an association between the relative count of neutrophils and lymphocytes, neutrophil-lymphocyte ratio, systemic inflammation index, and systemic inflammatory response index, aggregate systemic inflammation index and severe COVID-19 disease based on computed tomography data. These biomarkers provide valuable information about systemic inflammation and immune system activity and can be detected using standard blood tests.
About the authors
Marina Дьякова
St. Petersburg Research Institute of Phthisiopulmonology, St. Petersburg, Russian Federation
Email: marinadyakova@yandex.ru
ORCID iD: 0000-0002-7810-880X
Doctor of Biological Sciences, Senior Research of Microbiology, Biochemistry and Immunogenetics Research Laboratory
Russian Federation, LigovskiyProspekt 2-4, St. Petersburg 191036, Russian FederationAnna Valerievna Makarova
St. Petersburg Research Institute of Phthisiopulmonology, St. Petersburg, Russian Federation
Email: makarova_a09@mail.ru
ORCID iD: 0000-0003-2253-2289
Pediatrician
Russian Federation, LigovskiyProspekt 2-4, St. Petersburg 191036, Russian FederationOlga Leonidovna Rubtsova
St. Petersburg Research Institute of Phthisiopulmonology, St. Petersburg, Russian Federation
Email: rub.olga@mail.ru
Physician of Clinical Diagnostics Laboratory, Head of Clinical Diagnostic Laboratory of St. Petersburg State Research Institute of Phthisiopulmonology of Ministry of Health of the Russian Federation
Russian Federation, LigovskiyProspekt 2-4, St. Petersburg 191036, Russian FederationDilyara Salievna Esmedlyaeva
St. Petersburg Research Institute of Phthisiopulmonology, St. Petersburg, Russian Federation
Email: diljara-e@yandex.ru
ORCID iD: 0000-0002-9841-0061
Candidate of Biological Sciences, Senior Research of Microbiology, Biochemistry and Immunogenetics Research Laboratory
Russian Federation, Ligovskiy Prospekt 2-4, St. Petersburg 191036, Russian FederationPetr Kazimirovich Yablonskiy
St. Petersburg Research Institute of Phthisiopulmonology, St. Petersburg, Russian Federation;St. Petersburg University, St. Petersburg, Russian Federation
Author for correspondence.
Email: piotr_yablonskii@mail.ru
ORCID iD: 0000-0003-4385-9643
Doctor of Medical Science, Professor, Director of St. Petersburg State Research Institute of Phthisiopulmonology of Ministry of Health of the Russian Federation, Honored Doctor of Russia, Head of Hospital Surgery Department, Faculty of Medicine, St. Petersburg State University
Russian Federation, Ligovskiy Prospekt 2-4, St. Petersburg 191036, Russian Federation, 13B, Universitetskaya Emb., St. Petersburg, 199034, Russian FederationReferences
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