Comparative analysis between the use of renin–angiotensin system antagonists and clinical outcomes of hospitalized patients with COVID-19 respiratory infection

Hypertension has been associated with worse outcomes in patients with COVID-19 infection, so concerns have been raised about the possibility that inhibitors of the renin–angiotensin system (RAS) could influence the prognosis of these patients. This is an observational study of 921 consecutive patients admitted with COVID-19 respiratory infection to Hospital General Universitario Ciudad Real from March 1 to April 30, 2020. Following data were collected including patient demographic information, medical history, clinical characteristics, laboratory data, therapeutic interventions during the hospitalization and clinical outcomes. The mean age was 78 years, and 59.2% of patients had a history of hypertension. Patients with previous treatment with RAS inhibitor (42.4%) showed lower risk of the primary composite endpoint (mortality or need for invasive mechanical ventilation). Treatment with RAS inhibitor (both outpatient treatment and during hospitalization) had neither effect on mortality nor need for invasive ventilation. There were no differences in time-to-event analysis between groups. RAS inhibitor treatment prior to admission in patients with COVID-19 respiratory infection was associated with lower risk of the primary composite endpoint and did not show neither impact on mortality nor need for invasive mechanical ventilation, even if these drugs were prescribed during hospitalization. La presencia de hipertensión arterial se asocia con peor pronóstico en pacientes con COVID-19, y se ha sugerido que el uso de inhibidores del eje renina-angiotensina puede influir en el pronóstico de los pacientes. Registro observacional de 921 pacientes consecutivos ingresados por infección respiratoria COVID-19 entre el 1 de marzo y el 30 abril de 2020 en el Hospital General Universitario de Ciudad Real. Se registraron datos clínicos y analíticos, intervenciones terapéuticas y desarrollo de eventos durante el ingreso hospitalario. La mediana de edad fue de 78años y el 59,2% tenían hipertensión arterial. Aunque el perfil clínico fue más desfavorable en el grupo de pacientes con prescripción previa de IECA o ARA2 respecto al resto, los primeros presentaron menor riesgo de desarrollo del evento primario combinado (mortalidad total o necesidad de soporte ventilatorio invasivo). Asimismo, el empleo previo al ingreso o durante el mismo de estos fármacos mostró un efecto neutro sobre la mortalidad total y sobre la necesidad de ventilación mecánica invasiva. En el análisis de sup