Table 2

Numbers (%) of trainees correctly identifying factors that would interfere with the correct functioning of a pulse oximeter

PRHO (n=108)SHO (n=77)
Convulsions65 (60)47 (61)
Nail varnish54 (50)54 (70)
Carbon monoxide57 (53)56 (73)
Methaemoglobin45 (42)43 (56)
Shivering56 (52)46 (60)
Shock81 (75)65 (84)
Hypothermia74 (69)64 (83)