Which of the following are characteristics of epinephrine? 

A. It constricts blood vessels and prolongs the action of the local anesthetic.
B. It is useful in patients with heart or respiratory disease.
C. It is used in areas of the fingers, toes, nose, and ears.
D. It decreases wound infection rates.
E. It increases the rate at which the anesthetic spreads into the tissue.


A. It constricts blood vessels and prolongs the action of the local anesthetic.
Epinephrine constricts the blood vessels, which reduces bleeding and prolongs the action of the local anesthetic.

Health Professions

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