887) Which of the following statements about lidocaine (Xylocaine) as used in local anesthesia is TRUE?
A. It is an amine local anesthetic.
B. It produces local anesthesia by selectively blocking the sodium ions of the axon.
C. It is totally metabolized by the liver.
D. Its plasma half-life is 1.5 hours.
E. Its recommended total dosage in an adult is 500 mg without Epinephrine.
REFERENCES & ANSWER
Norfleet E. A.: Toxic Effects of Anesthetic, Chapter 45 in Operative Challenges in Otolaryngology-Head and Neck Surgery, (Pillsbury III H. C. and Goldsmith III M.M, editors), 1990, pp. 832-842
Fletcher M. V.: Anesthesia in Facial Plastic Surgery, Chapter 17, in Facial Plastic and Reconstructive Surgery (Papel I.D., editor), Third Edition, 2009, pp.189-197
887) B It produces local anesthesia by selectively blocking the sodium ions of the axon.
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