Table 1 Mean (range) FiO2 measured in a leak free facemask, at different times after starting the oxygen flow using a self‐inflating Laerdal Silicone Resuscitator (240 ml) with a 600 ml oxygen reservoir bag and 100% oxygen flowing into the inlet at different flow rates (Study 1).
| 10 l/min | 8 l/min | 6 l/min | 5 l/min | 4 l/min | 3 l/min | 2 l/min | 1 l/min | |
|---|---|---|---|---|---|---|---|---|
| 15 sec | 75% (57–89) | 66% (62–73) | 39% (26–62) | 39% (30–75) | 32% (22–42) | 35% (23–49) | 22% (21–22) | 21% (21) |
| 30 sec | 76% (58–90) | 67% (63–76) | 41% (30 –63) | 51% (31–75) | 32% (22–44) | 37% (24–51) | 22% (21–25) | 21% (21) |
| 60 sec | 78% (61–92) | 70% (64–81) | 44% (34–64) | 56% (36 –75) | 34% (22–47) | 41% (25–60) | 23% (21–26) | 21% (21–22) |