LARYGOSCOPES
A laryngoscope is an instrument used to
examine the larynx and to facilitate intubation of the trachea. The handle
usually contains batteries to light a bulb on the blade tip (Figure 19–15),
or, alternately, to power a fiberoptic bundle that terminates at the tip of the
blade. Light from a fiberoptic bundle tends to be more precisely directed and
less diffuse. Also, laryn-goscopes with fiberoptic light bundles in their
blades can be made magnetic resonance imaging compat-ible. The Macintosh and
Miller blades are the most popular curved and straight designs, respectively,
in
the United States. The choice of blade
depends on personal preference and patient anatomy. Because no blade is perfect
for all situations, the clinician should become familiar and proficient with a
variety of blade designs (Figure 19–16).
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