Resumen
Objetivo: Analizar los factores de riesgo asociados a la gravedad de la COVID-19 en pacientes hospitalizados. Métodos: Estudio de cohorte retrospectivo realizado a partir de datos de historias clínicas electrónicas de pacientes hospitalizados por COVID-19 entre enero y diciembre de 2020. Se analizaron variables sociodemográficas y clínicas, además de los desenlaces: evolución del caso (curación o fallecimiento) y gravedad de la enfermedad: tiempo de hospitalización (≥ 9 días), ingreso en unidad de cuidados intensivos (UCI), tiempo de estancia en UCI (≥ 6 días), uso de soporte ventilatorio y uso de intubación orotraqueal (IOT). Los factores asociados fueron analizados mediante Riesgos Relativos (RR) brutos y ajustados, con intervalo de confianza del 95% (IC95). Resultados: En la muestra (n=676), se observó un mayor riesgo de ingreso en UCI entre los pacientes hipertensos (RR=1,47; IC95 1,11-1,94), mientras que la IOT fue más frecuente entre los fumadores (RR=1,44; IC95 1,04-2,00). Además, el riesgo de evolución al fallecimiento fue mayor entre los hipertensos (RR=1,78; IC95 1,28-2,46) y en aquellos con enfermedad neurológica previa (RR=2,58; IC95 1,56-4,28). Conclusión: Los hallazgos refuerzan la importancia de las políticas públicas orientadas no solo a la prevención de infecciones respiratorias graves, sino también al control y reducción de los factores de riesgo.
Referencias
BRASIL. Ministério da Saúde. Conselho Nacional de Saúde. Resolução nº 466, de 12 de dezembro de 2012. Dispõe sobre as diretrizes e normas regulamentadoras de pesquisas envolvendo seres humanos. Diário Oficial da União: seção 1. 2013. Disponível em: http://conselho.saude.gov.br/resolucoes/2012/Reso466.pdf. Acessado em: 14 de outubro de 2025.
BRASIL. Ministério da Saúde. Diretrizes para diagnóstico e tratamento da COVID-19. 2022. Disponível em: https://docs.bvsalud.org/biblioref/2020/05/1096730/diretrizes-covid19.pdf. Acessado em: 2 de agosto de 2025.
BRASIL. Ministério da Saúde. Painel Coronavírus. Atualizado em 31 de julho de 2025a. Disponível em: https://covid.saude.gov.br/. Acessado em: 02 agosto de 2025.
BRASIL. Ministério da Saúde. Secretaria de Ciência, Tecnologia, Inovação e Insumos Estratégicos em Saúde (SCTIE). Diretrizes para diagnóstico e tratamento da COVID-19. 2020. Versão 2. Disponível em: https://saude.rs.gov.br/upload/arquivos/202004/14140600-2-ms-diretrizes-covid-v2-9-4.pdf. Acesso em: 16 de outubro de 2025.
BRASIL. Ministério da Saúde. Vacinas contra covid-19 e gripe: seguras, eficazes e fundamentais para sua proteção. 2025b. Disponível em: https://www.gov.br/saude/pt-br/assuntos/saude-com-ciencia/noticias/2025/agosto/vacinas-contra-covid-19-e-gripe-seguras-eficazes-e-fundamentais-para-sua-protecao.com. Acesso em: 15 de outubro de 2025.
BRASIL. Secretaria Estadual da Saúde do Rio Grande do Sul. Painel de Hospitalizações de Síndrome Respiratória Aguda Grave - SRAG. Atualizado em 01 agosto de 2025c. Disponível em: ti.saude.rs.gov.br/srag/. Acessado em: 02 de agosto de 2025.
BERNARDES FL, et al. Novas tendências de metropolização em cidades médias do Brasil: um estudo de caso no Estado do Rio Grande na possível Região Metropolitana de Passo Fundo – RMPF. Revista Brasileira de Gestão Urbana, 2021; 13(e20200165): 1-17.
CHOW NKN, et al. The effect of pre-COVID and post-COVID vaccination on long COVID: a systematic review and meta-analysis. Journal Infectologia, 2024; 89(6): 106358.
CORONA-NAKAMURA AL, et al. Neurological Manifestations and Complications of the Central Nervous System as Risk Factors and Predictors of Mortality in Patients Hospitalized with COVID-19: A Cohort Study. Journal Clinical Medice, 2023; 12(12).
DENG YP, et al. Association of hypertension with severity and mortality of hospitalized COVID-19 patients in Wuhan, China: A single-center, retrospective study. Arquivo Brasileiro de Cardiologia, 2021; 117(5): 911-921.
ESKANDAR EN, et al. Neurologic Syndromes Predict Higher In-Hospital Mortality in COVID-19. Neurology, 2021; 96(11): 1-12.
ESPINOSA OA, et al. Prevalence of comorbidities in patients and mortality cases affected by SARS-CoV2: a systematic review and meta-analysis. Revista do Instituto de Medicina Tropical de São Paulo, 2020; 62: 1-13.
ESPIRITU AI, et al. Clinical outcomes in COVID-19 among patients with hypertension in the Philippine CORONA Study. Eurpean Journal of Medical Research, 2023; 28(62): 1-10.
GALLUS S, et al. The role of smoking in COVID-19 progression: a comprehensive meta-analysis. European Respiratory Review, 2023; 32(167): 1-12.
GARCÍA-AZORÍN D, et al. Neurological Comorbidity Is a Predictor of Death in Covid-19 Disease: A Cohort Study on 576 Patients. Frontiers Neurologic, 2020; 11(781): 1-8.
GRASSELLI G, et al. Baseline Characteristics and Outcomes of 1591 Patients Infected With SARS-CoV-2 Admitted to ICUs of the Lombardy Region, Italy. JAMA, 2020; 323(16): 1574-1581.
HUANG S, et al. COVID-19 patients with hypertension have more severe disease: a multicenter retrospective observational study. Hypertension Research, 2020; 43: 824–831.
HU B, et al. Characteristics of SARS-CoV-2 and COVID-19. Nature Reviews Microbiology, 2021; 19: 141–154.
INSTITUTO BRASILEIRO DE GEOGRAFIA E ESTATÍSTICA (IBGE). Censo Demográfico 2022: Passo Fundo. Panorama. 2022. Disponível em: https://cidades.ibge.gov.br/brasil/rs/passo-fundo/panorama. Acessado em: 30 de julho de 2025.
INSTITUTO BUTANTAN. Retrospectiva 2021: segundo ano da pandemia é marcado pelo avanço da vacinação contra Covid-19 no Brasil. 2021. Disponível em: https://butantan.gov.br/noticias/retrospectiva-2021-segundo-ano-da-pandemia-e-marcado-pelo-avanco-da-vacinacao-contra-covid-19-no-brasil.com. Acesso em: 15 de outubro de 2025.
INSTITUTO DE COMUNICAÇÃO E INFORMAÇÃO CIENTÍFICA E TECNOLÓGICA EM SAÚDE (ICICT). Painel de Indicadores em Saúde: Pesquisa Nacional de Saúde, 2019. 2021. Disponível em: https://www.pns.icict.fiocruz.br/painel-de-indicadores-mobile-desktop/. Acesso em: 3 de junho de 2025.
JIMÉNEZ-RUIZ CA, et al. COVID-19 y tabaquismo: revisión sistemática y metaanálisis de la evidencia. Archivos Bronconeumología, 2021; 57(1): 21–34.
JORDAN RE, et al. Covid-19: Risk factors for severe disease and death. BMJ, 2020; 368: 1-2.
LIU L, et al. Mental and neurological disorders and risk of COVID-19 susceptibility, illness severity and mortality: a systematic review, meta-analysis and call for action. EClinicalMedicine, 2021; 40: 1-14.
LOUIS TJ, et al. Extra-Pulmonary Complications in SARS-CoV-2 Infection: A Comprehensive Multi Organ-System Review. Microorganisms, 2022; 10(1): 153.
LINK-GELLES R, et al. Interim estimates of 2024–2025 COVID-19 vaccine effectiveness among adults aged ≥18 years—VISION and IVY Networks, September 2024–January 2025. Morbidity and Mortality Weekly Report, 2025; 74(6): 73-82.
MARSTERS CM, et al. Increased frequency and mortality in persons with neurological disorders during COVID-19. Brain, 2024; 147(7): 2542–2551.
REYES C, et al. Characteristics and outcomes of patients with COVID-19 with and without prevalent hypertension: a multinational cohort study. BMJ Open, 2021; 11(12): 1-11.
ROMAGNOLO A, et al. Neurological comorbidities and COVID-19-related case fatality: A cohort study. Journal Neurological Sciences, 2021; 428: 1-8.
SANYAOLU A, et al. Comorbidity and its Impact on Patients with COVID-19. SN Comprehensive Clincal Medicine, 2020; 2: 1069–1076.
SCHOLZ JR, et al. COVID-19, Renin-Angiotensin System, Angiotensin-Converting Enzyme 2, and Nicotine: What is the Interrelation?. Arquivo Brasileiro de Cardiologia, 2020; 115(4): 708-711.
SHARAFKHAH M, et al. Do prior neurological comorbidities predict COVID-19 severity and death? A 25-month cross-sectional multicenter study on 7370 patients. Acta Neurologica Belgica, 2023; 123(5): 1933-1944.
STEINMETZ JD, Seeher KM, Schiess N, Nichols E, Cao B, Servili C, et al. Global, regional, and national burden of disorders affecting the nervous system, 1990–2021: a systematic analysis for the Global Burden of Disease Study 2021. The Lancet Neurology, 2024; 23(4): 344–81.
TIMOTEO PS, Medeiros KS, Tourinho FSV. Clinical and epidemiological characteristics and outcomes of patients affected by COVID-19 in the Intensive Care Unit. Revista Brasileira de Enfermagem, 2024; 77(Suppl 1): 1-8.
WORLD HEALTH ORGANIZATION (WHO). Statement on the fifteenth meeting of the IHR (2005) Emergency Committee on the COVID-19 pandemic. 2023. Disponível em: https://www.who.int/news/item/05-05-2023-statement-on-the-fifteenth-meeting-of-the-international-health-regulations-%282005%29-emergency-committee-regarding-the-coronavirus-disease-%28covid-19%29-pandemic. Acessado em: 2 de agosto de 2025.
WORLD HEALTH ORGANIZATION (WHO). WHO COVID-19 dashboard. Atualizado em 12 de julho 2025. Disponível em: https://data.who.int/dashboards/covid19. Acessado em: 02 de agosto de 2025.
WORLD HEALTH ORGANIZATION (WHO). WHO Director-General's opening remarks at the media briefing on COVID-19 - 11 March 2020. 2020. Disponível em: https://www.who.int/director-general/speeches/detail/who-director-general-s-opening-remarks-at-the-media-briefing-on-covid-19---11-march-2020. Acessado em: 2 de agosto de 2025.
WORLD MEDICAL ASSOCIATION (WMA). World Medical Association Declaration of Helsinki: ethical principles for medical research involving human subjects. Adopted by the 18th World Medical Association General Assembly, Helsinki, Finland, June 1964; and amended by the WMA General Assemblies: Tokyo, 1975; Venice, 1983; Hong Kong, 1989; Somerset West, 1996; Edinburgh, 2000; Washington, 2002; Tokyo, 2004; Seoul, 2008; and Fortaleza, 2013. 2013. Disponível em: https://www.wma.net/declarac%CC%A7a%CC%83o-de-helsinque/. Acessado em: 30 de julho de 2025.
YAO Q, et al. Clinical characteristics and outcomes in coronavirus disease 2019 (COVID-19) patients with and without hypertension: a retrospective study. Reviews in Cardiovascular Medicine, 2020; 21(4): 615–625.
ZHU N, et al. A novel coronavirus from patients with pneumonia in China, 2019. The New England Journal of Medicine, 2020; 382(8): 727–33.
