The Effect of Intravenous Autologous Activated Platelet-Rich Plasma Therapy on “Profibrotic Cytokine” IL-1β Levels in Severe and Critical COVID-19 Patients: A Preliminary Study

Table 2

Various oxygen delivery devices.

Device	Flow (L/minute)	Achievable FiO2
Nasal cannula	3–6	Maximum ∼30%
Simple mask	6–8	Maximum ∼60%
Rebreathing mask	10–12	Maximum ∼80%
Nonrebreather mask	12–15	Maximum ∼95%
High-flow nasal cannula	25–60	40–100%
Intubation	30–40	Any FiO2