For intubation of patients with known or anticipated airway abnormalities,
the flexible fiberoptic bronchoscope is an invaluable tool. It also may be
useful in patients whose airway abnormalities are unrecognized on preintuba
tion or assessment. In some instances, however, even fiberoptic intubation
may fail or prove difficult. Thus, alternatives to the fiberoptic bronchosc
ope have been developed. This article reviews a number of these alternative
methods.