Table 1

Numbers (%) of trainees correctly identifying phases of correct use of non-rebreathing oxygen masks

PRHOSHO
(n=108)(n=77)
Attach tubing to oxygen source79 (73)57 (74)
Ensure oxygen is flowing73 (68)57 (74)
Identification of correct flow rate (>10 litres/min)12 (11)29 (38)
Ensure reservoir bag is filled47 (43)27 (35)
Reservoir does not fully collapse during inspiration5 (5)5 (6)
Apply mask to patient's face93 (86)73 (95)