Which Topical Anesthetic Has Warnings About the Risk of Methemoglobinemia

question 2

Multiple Choice

Which topical anesthetic has warnings about the risk of methemoglobinemia?

• A) Benzocaine creams
• B) Benzocaine sprays
• C) Tetracaine hydrochloride
• D) Dyclonine hydrochloride

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Definitions:

GTP

Guanosine triphosphate, a molecule that provides energy for many biochemical cellular processes by hydrolysis of its high-energy phosphate bonds.

Autocrine

A process in which a cell releases a hormone or chemical messenger that attaches to autocrine receptors on the same cell, causing alterations in the cell's state.

Chemicals Produced by Neurons

Substances such as neurotransmitters that are synthesized and released by neurons to transmit signals across synapses.

Hormone-receptor Action

A biochemical process where hormones bind to specific receptors on or inside cells, initiating a cell signaling cascade that results in physiological changes.