Association between high-dose steroid therapy, respiratory function, and time to discharge in patients with COVID-19: Cohort study.

OBJECTIVE: To analyze whether there is an association between the use glucocorticoids at high doses, and the evolution of saturation/fraction of inspired oxygen (SAFI) or time to discharge, in patients hospitalized with COVID-19. METHODS: This was an observational study on a cohort of 418 patients admitted to three regional hospitals in Catalonia, Spain. As primary outcomes, we studied the evolution of SAFI in the first 48 h of treatment and the time to discharge. The results were compared between patients treated and untreated with glucocorticoids (methylprednisolone 1 mg/kg/day o dexamethasone 20-40 mg/day) through sub-cohort analyses matched for multiple clinical and prognostic factors, as well as through Cox multivariate models adjusted for prognostic factors. The simultaneous use of different treatments for COVID-19 was taken into account, both in sub-cohorts matching and in COX regression. RESULTS: There were 187 patients treated with glucocorticoids; of these, 25 patients could be matched with an equivalent number of control patients. In the analysis of these matched sub-cohorts, no significant difference was observed in time to discharge (log-rank: p = 0.291) or the increment in SAFI at 48 h of treatment (glucocorticoides: -0.04; controls: +0.37; p = 0.095). Multivariate models using Cox regression showed a significantly longer time to discharge in patients treated with glucocorticoids (hazard ratio: 7.26; 95% IC: 3.30-15.95). CONCLUSIONS: We have not found improvement in respiratory function or time until discharge, associated with the use of glucocorticoids at high doses.

OBJETIVO: Analizar si existe asociación entre el uso de glucocorticoides a dosis altas y la evolución de la SAFI (saturación/fracción inspirada de oxígeno) o el tiempo hasta el alta, en pacientes hospitalizados por COVID-19. MÉTODOS: Estudio observacional sobre una cohorte de 418 pacientes ingresados en 3 hospitales comarcales de Cataluña (España). Como resultados primarios se estudiaron la evolución de la SAFI en las primeras 48 h de tratamiento y el tiempo hasta el alta. Los resultados se compararon entre pacientes tratados y no tratados con glucocorticoides (metilprednisolona 1-2 mg/kg/día o dexametasona 20-40 mg/día), mediante el análisis de subcohortes emparejadas por múltiples factores clínicos y pronósticos, así como mediante modelos multivariantes de Cox, ajustados por diversos factores pronósticos. El uso simultáneo de diferentes tratamientos para la COVID-19 fue tenido en cuenta, tanto en el emparejamiento de subcohortes como en la regresión de Cox. RESULTADOS: Hubo 187 pacientes con glucocorticoides; de ellos, 25 pacientes pudieron ser emparejados con un número equivalente de pacientes control. En las subcohortes emparejadas, no se apreció diferencia en el tiempo hasta el alta (log-rank: p = 0,291), ni en el cambio en la SAFI a las 48 h desde la basal (glucocorticoides: −0,04; controles: +0,37; p = 0,095). Los modelos multivariantes mediante regresión de Cox mostraron un tiempo hasta el alta significativamente más largo en pacientes tratados con glucocorticoides (hazard ratio: 7,26; IC 95%: 3,30-15,95). CONCLUSIONES: No hemos encontrado mejoría en la función respiratoria o tiempo hasta el alta, asociado al uso de glucocorticoides a dosis altas.

[Association between high-dose steroid therapy, respiratory function, and time to discharge in patients with COVID-19: Cohort study]. / Asociación entre el tratamiento esteroideo a dosis alta, la función respiratoria y el tiempo hasta el alta en pacientes con COVID-19: Estudio de cohortes.

OBJECTIVE: To analyze whether there is an association between the use glucocorticoids at high doses, and the evolution of saturation/fraction of inspired oxygen (SAFI) or time to discharge, in patients hospitalized with COVID-19. METHODS: This was an observational study on a cohort of 418 patients admitted to three regional hospitals in Catalonia, Spain. As primary outcomes, we studied the evolution of SAFI in the first 48hours of treatment and the time to discharge. The results were compared between patients treated and untreated with glucocorticoids (methylprednisolone 1-2mg/kg/day o dexamethasone 20-40mg/day) through sub-cohort analyses matched for multiple clinical and prognostic factors, as well as through Cox multivariate models adjusted for prognostic factors. The simultaneous use of different treatments for COVID-19 was taken into account, both in sub-cohorts matching and in Cox regression. RESULTS: There were 187 patients treated with glucocorticoids; of these, 25 patients could be matched with an equivalent number of control patients. In the analysis of these matched sub-cohorts, no significant difference was observed in time to discharge (log-rank: p=0.291) or the increment in SAFI at 48hours of treatment (glucocorticoides: -0.04; controls: +0.37; p=0.095). Multivariate models using Cox regression showed a significantly longer time to discharge in patients treated with glucocorticoids (hazard ratio: 7.26; 95% IC: 3.30-15.95). CONCLUSIONS: We have not found improvement in respiratory function or time until discharge, associated with the use of glucocorticoids at high doses.

Association between COVID-19 prognosis and disease presentation, comorbidities and chronic treatment of hospitalized patients.

IMPORTANCE: The rapid pandemic expansion of the disease caused by the new SARS-CoV-2 virus has compromised health systems worldwide. Knowledge of prognostic factors in affected patients can help optimize care. OBJECTIVE: The objective of this study was to analyze the relationship between the prognosis of COVID-19 and the form of presentation of the disease, the previous pathologies of patients and their chronic treatments. DESIGN, PARTICIPANTS AND LOCATIONS: This was an observational study on a cohort of 418 patients admitted to three regional hospitals in Catalonia (Spain). As primary outcomes, severe disease (need for oxygen therapy via nonrebreather mask or mechanical ventilation) and death were studied. Multivariate binary logistic regression models were performed to study the association between the different factors and the results. RESULTS: Advanced age, male sex and obesity were independent markers of poor prognosis. The most frequent presenting symptom was fever, while dyspnea was associated with severe disease and the presence of cough with greater survival. Low oxygen saturation in the emergency room, elevated CRP in the emergency room and initial radiological involvement were all related to worse prognosis. The presence of eosinophilia (% of eosinophils) was an independent marker of less severe disease. CONCLUSIONS: This study identified the most robust markers of poor prognosis for COVID-19. These results can help to correctly stratify patients at the beginning of hospitalization based on the risk of developing severe disease.