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Chapter 3. Preparation for Awake Intubation
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The lower border of the quadrangular ligament forms
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C. the aryepiglottic ligament
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D. the triangular ligament
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E. the hyoepiglottic ligament
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(B) The lower border of the quadrangular ligament forms the false vocal cords.
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The maximum effective concentration of topical lidocaine applied to the tongue is
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(C) The maximum effective concentration of topical lidocaine applied to the tongue is 4%.
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B. is metabolized to para-aminobenzoic acid
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C. can produce methemoglobinemia
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D. is an effective topical anesthetic
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(E) Benzocaine is an ester type of local anesthetic which is metabolized to para-aminobenzoic acid. It can also produce methemoglobinemia.