When explaining a surgical procedure to a client, the nurse tells the client that a small amount of which drug is sometimes added to the anesthetic solution to lengthen the duration of action of the anesthetic?
1. Epinephrine (Adrenaline)
2. Diazepam (Valium)
3. Diphenhydramine (Benadryl)
4. Lidocaine (Xylocaine)
Correct Answer: 1
Rationale 1: Small amounts of epinephrine are sometimes added to the anesthetic solution to constrict blood vessels in the immediate area where the local anesthetic is applied. This keeps the anesthetic in the area longer and lengthens the duration of action of the drug.
Rationale 2: Diazepam (Valium) is a benzodiazepine.
Rationale 3: Diphenhydramine (Benadryl) is an antihistamine.
Rationale 4: Lidocaine (Xylocaine) is an anesthetic.
Global Rationale: Small amounts of epinephrine are sometimes added to the anesthetic solution to constrict blood vessels in the immediate area where the local anesthetic is applied. This keeps the anesthetic in the area longer and lengthens the duration of action of the drug. Diazepam (Valium) is a benzodiazepine. Diphenhydramine (Benadryl) is an antihistamine. Lidocaine (Xylocaine) is an anesthetic.
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