Measured indicator/severitya
|
Mild
|
Moderate
|
Severe
|
Critical
|
---|
Respiratory rate
|
≥ 24
|
≥ 30
|
–
|
–
|
SPO2
|
≥ 93
|
93 > SPO2 ≥ 90
|
89 > SPO2 ≥ 85
|
< 85b
|
Respiratory distress
|
None
|
None
|
Mild to moderate
|
Severec
|
Blood pressure
|
–
|
–
|
–
|
< 90/60
|
- aPresence of any of the severity indicators of the more severe group places the patient in the more severe group
- bDespite high-flow O2 administration
- cNasal flaring, air hunger, intercostal retraction, subcostal retraction