WREB Study Local Anesthesia & NO Questions well answered 2024

WREB Study Local Anesthesia & NO Questions How does local anesthesia work? a. it initiates depolarization b. it blocks depolarization c. it allows sodium transport across the nerve membrane - correct answer b. it blocks depolarization Which of the following makes local anesthetic most effective? a. rapid injection b. injecting a larger amount of anesthetic c. lipid solubility - correct answer c. lipid solubility Local anesthetics typically produce vasoconstriction. True False - correct answer False Amide-type local anesthetics are metabolized in? a. liver b. lungs c. kidneys d. blood plasma - correct answer a. liver Where is the anesthetic Mepivacaine metabolized? a. liver b. lungs c. kidneys d. blood plasma - correct answer a. liver Which of the following is true of the ester classification of local anesthetic agents? a. the primary bi-product of the metabolism of esters is methmoglobinemia b. esters are metabolized by the enzyme pseudocholinesterase c. some metabolism of esters can occur in the lungs d. examples of esters include Lidocaine 2% and Prilocaine 4%. - correct answer b. esters are metabolized by the enzyme pseudocholinesterase What are the important clinical effects of vasodilation of local anesthetics? a. will increase the rate of absorption of the local anesthetic agent into the blood b. it will decrease the duration of pain control of the local anesthetic agent c. it will increase the level of local anesthetic in the blood d. all of the above - correct answer d. all of the above Local anesthetics can cross the placenta and enter the circulatory system of the fetus. True False - correct answer True If the use of a certain local anesthetic agent is absolutely contraindicated for a patient, this means: