@article {LizinfeldPA3657, author = {Irina Lizinfeld and Natalia Pshenichnaya and Lyubov Parolina and Grigorii Zhuravlev}, title = {Input of comorbidities to hospitalization of patients with COVID-19}, volume = {58}, number = {suppl 65}, elocation-id = {PA3657}, year = {2021}, doi = {10.1183/13993003.congress-2021.PA3657}, publisher = {European Respiratory Society}, abstract = {Introduction: The number of patients with COVID-19 is increasing rapidly, but the relationship between comorbidity and hospitalization of patients with COVID-19 is still not clearly defined.Aim: To analyze the structure of comorbidity of patients with COVID-19 and its impact on hospitalization.Methods: The analysis of monitoring data of patients with COVID-19 with various comorbidities was carried out in the period from March to November 2020 in the Russian Federation.Results: A total of 90077 patients with comorbidities were identified among patients with COVID-19. Diseases of the cardiovascular system accounted for 50.54\% (45713), diseases of the bronchopulmonary system - 14.14\% (12791), diseases of the endocrine system - 9.26\% (8375), oncology - 4.59\% (4151), other diseases 21.47\% (19047). Hospitalization of patients with the following comorbidities dominated: diseases of the cardiovascular system - 65.5\% (OR 1.36; 95\% CI 1.32-1.40), the endocrine system - 57.3\% (OR 0.83; 95 \% CI 0.79-0.87), bronchopulmonary system - 56.6\% (OR 0.79; 95\% CI 0.76-0.82), oncological diseases - 54.0\% (OR 0.72; 95 \% CI 0.68-0.77). The presence of bronchopulmonary diseases in patients did not increase the chances of hospitalization of patients with COVID-19. The frequency of hospitalization of patients with diseases of the cardiovascular system was significantly higher (p \<0.001) in comparison with other comorbidities. Their chances of being admitted to hospital increased 1.36 times compared to patients without such diseases.Conclusions: Patients with cardiovascular pathology had the highest risk of hospitalization. It is necessary to pay special attention~to patients with concomitant cardiovascular~pathology at the outpatient stage.FootnotesCite this article as: European Respiratory Journal 2021; 58: Suppl. 65, PA3657.This abstract was presented at the 2021 ERS International Congress, in session {\textquotedblleft}Prediction of exacerbations in patients with COPD{\textquotedblright}.This is an ERS International Congress abstract. No full-text version is available. Further material to accompany this abstract may be available at www.ers-education.org (ERS member access only).}, issn = {0903-1936}, URL = {https://erj.ersjournals.com/content/58/suppl_65/PA3657}, eprint = {https://erj.ersjournals.com/content}, journal = {European Respiratory Journal} }