Topical anesthetic agents, such as benzocaine are applied before needle insertion to anesthetize the terminal nerve endings and thus promote client comfort. Thus a significant amount is needed to facilitate diffusion of the drug through the mucous membrane and can be reapplied numerous times due to the low toxicity of a topical medication.

Question

Quizplus · Accepted Answer

The first statement is correct, but the reason is not. Only a small amount of topical agent is needed and because of the high concentration necessary to aid in the diffusion through the mucous membrane, toxicity is a concern.

Topical Anesthetic Agents, Such as Benzocaine Are Applied Before Needle