Patients diagnosed with cancer (at any stage), Hemodynamic instability (need for vasopressors), Pregnant women, Immunocompromised patients, Exclusive Palliative Care, Inclusion in any other interventionist study, Heart failure as a predominant cause of acute respiratory failure, decompensated liver cirrhosis, HIV +, Dialysis, Home / long-term oxygen therapy, Idiopathic pulmonary fibrosis

Patients diagnosed with cancer (at any stage), Hemodynamic instability (need for vasopressors), Pregnant women, Immunocompromised patients, Exclusive Palliative Care, Inclusion in any other interventionist study, Heart failure as a predominant cause of acute respiratory failure, decompensated liver cirrhosis, HIV +, Dialysis, Home / long-term oxygen therapy, Idiopathic pulmonary fibrosis