A physician is preparing to suture a patient who has a superficial stab wound in the leg. The physician asks the nurse for lidocaine with epinephrine
The nurse understands that concurrent administration of lidocaine with epinephrine results in the epinephrine having which effect on the lidocaine?
a. Epinephrine prolongs anesthesia and reduces the risk of toxicity.
b. Epinephrine delays absorption of the lidocaine, which results in a longer anesthetic effect.
c. Epinephrine increases perfusion by increasing blood flow to the area.
d. Epinephrine causes an antiadrenergic effect.
ANS: A
Epinephrine causes vasoconstriction and reduces local blood flow. It delays systemic absorption of the anesthetic, which results in prolonged anesthesia and a reduced risk of toxicity.
Epinephrine does not delay absorption of lidocaine.
Epinephrine does not increase blood flow.
Epinephrine causes an adrenergic effect, not an antiadrenergic effect.
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The purpose of the National League for Nursing is to
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