Which of the following are characteristics of epinephrine?
A. It increases the rate at which the anesthetic spreads into the tissue.
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 constricts blood vessels and prolongs the action of the local anesthetic.
Answer: E
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