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Table 1 SENTADO-COVID study seven-category ordinal scale for clinical involvement

From: Stem cell nebulization therapy for COVID-19 infection: radiological and clinical outcomes

Category Score
No limitation of activities, discharged from hospital 1
Limitation of activities. 2
Hospitalized, no oxygen therapy. 3
Oxygen by mask or nasal prongs. 4
Non-invasive ventilation or high-flow oxygen 5
Intubation and mechanical ventilation. 6
Mechanical ventilation + additional organ support: ECMO, CRRT, vasopressors. 7
Death 8
  1. ECMO extracorporeal membrane oxygenation, CRRT continuous renal replacement therapy