Certified Nurses Operating Room (CNOR) Practice Exam

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Prepare for the Certified Nurses Operating Room Test. Utilize flashcards and multiple choice questions; each accompanied by hints and in-depth explanations. Ace your exam with confidence!

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Which injectable agent is preferred for faster spread and to resolve local edema?

Lidocaine
Bupivacaine
Sodium bicarbonate
Wydase

The correct answer is: Wydase

Wydase, also known as hyaluronidase, is the preferred injectable agent for faster spread and to resolve local edema. This enzyme facilitates the dispersion of injected fluids in the tissue, enhancing the permeability of the extracellular matrix. As a result, it allows for quicker diffusion of local anesthetics and other substances, which is particularly beneficial in situations requiring rapid onset of action or reducing localized swelling. Lidocaine and bupivacaine are both local anesthetics but do not have the same properties for dispersing fluid or reducing local edema efficiently. Sodium bicarbonate, while sometimes used to adjust the pH of anesthetics for increased comfort during injection, does not directly contribute to fluid spread or edema resolution like Wydase does. Therefore, Wydase stands out in this context due to its unique mechanism and effectiveness in achieving faster distribution and addressing swelling.