A nurse is preparing to administer medication to a preschooler and must convert the child's weight from pounds to kilograms. The child weighs 30 lb. How many kilograms does the child weigh?

(Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

The correct answer is: B. Latex.

Choice A reason: Allergy to eggs is primarily a concern when it comes to vaccinations, such as the influenza vaccine, which may contain egg protein. In the context of IV therapy, egg allergies are not typically associated with direct contraindications or precautions. However, it’s important to note that some medications or vaccines may contain egg proteins, which could be relevant in certain medical procedures, but not usually in standard IV therapy.

Choice B reason: Latex allergies are particularly relevant in a hospital setting where latex is commonly found in various medical supplies, including gloves, catheters, and IV tubing. A latex allergy can cause severe reactions, including anaphylaxis, which is a life-threatening condition. Therefore, it is crucial for healthcare providers to be aware of a patient’s latex allergy to avoid exposure during medical procedures, including IV therapy.

Choice C reason: Seafood allergies are generally related to the ingestion of seafood and do not typically pose a risk in the context of IV therapy. The concern about iodine in contrast media, which is sometimes mistakenly linked to seafood allergies, is not relevant to standard IV therapy solutions.

Choice D reason: Bee sting allergies are significant when a patient is exposed to bee venom, which can cause anaphylaxis. In the context of IV therapy, a bee sting allergy is not typically a concern unless the therapy involves venom immunotherapy or the patient has had a recent bee sting that might complicate their medical condition.

Choice A rationale:

The correct answer. A piston syringe is used for wound irrigation to deliver a controlled and directed flow of fluid to clean the wound. It helps remove debris and promote healing. This choice aligns with wound irrigation best practices.

Choice B rationale:

Barrier ointment is not typically used for wound irrigation. Its purpose is to protect intact skin from moisture, friction, and other irritants, rather than to clean wounds.

Choice C rationale:

Chilled irrigation solution is not commonly used for wound irrigation. Room temperature or warm sterile saline is usually recommended for wound cleansing as cold solutions can cause discomfort and vasoconstriction.

Choice D rationale:

Sterile cotton balls are not used for wound irrigation. They may leave fibers in the wound, potentially leading to infection. Wound irrigation is usually performed using sterile syringes, solutions, and appropriate irrigation devices.