The nurse recognizes that adding a vasoconstrictor to a local anesthetic agent will have which effect on absorption of the anesthetic agent?
1. It will increase blood flow to the area.
2. It will help to eliminate the drug sooner.
3. It will produce a more localized effect.
4. It will slow absorption of the agent.
Correct Answer: 4
Rationale 1: Vasoconstriction will reduce blood flow to the area.
Rationale 2: Vasoconstrictors will not alter the anesthetics agent's rate of elimination.
Rationale 3: It will not produce a more localized effect.
Rationale 4: Vasoconstriction reduces blood flow to the site and slows absorption of the agent.
Global Rationale: Vasoconstriction reduces blood flow to the site and slows absorption of the agent. Vasoconstriction will reduce blood flow to the area, will not alter the anesthetic agent's rate of elimination, nor will it produce a more localized effect.
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