Epidemiological data, severity on admission, analytical data and pharmacological therapies
There were no differences between groups in sex, age, PS, pH at admission, HCO3 value at admission, RR, or administration of GC. Fractionally nebulised bronchodilators were used in all patients during admission. Data are summarised in Table 1. Differences were observed in the frequency of performing chest radiography, empirical antibiotic therapy, continuous salbutamol, magnesium sulfate. All of these being less frequent in the case of receiving only HFNC (Table 2).