What is the purpose of administering diphenhydramine before a blood transfusion?
To expand the blood volume.
To enhance clotting factors.
To avoid fever and chills.
To prevent urticaria.
The Correct Answer is D
Choice A rationale
Diphenhydramine does not expand blood volume. It is an antihistamine used to prevent allergic reactions.
Choice B rationale
Diphenhydramine does not enhance clotting factors. It is used to manage allergic reactions.
Choice C rationale
While diphenhydramine can help manage fever and chills, its primary purpose before a blood transfusion is to prevent allergic reactions.
Choice D rationale
Administering diphenhydramine before a blood transfusion helps prevent urticaria and other allergic reactions by blocking histamine release. .
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Correct Answer is A
Explanation
Choice A rationale
Cataracts cause the lens of the eye to become cloudy, leading to a decreased ability to perceive colors. This is due to the scattering of light as it passes through the cloudy lens, which reduces the clarity and vibrancy of colors.
Choice B rationale
Loss of peripheral vision is more commonly associated with glaucoma, a condition where increased intraocular pressure damages the optic nerve.
Choice C rationale
Seeing bright flashes of light and floaters is typically a symptom of retinal detachment, a serious condition where the retina pulls away from its normal position.
Choice D rationale
Loss of central vision is often linked to macular degeneration, a condition that affects the central part of the retina responsible for sharp, detailed vision.
Correct Answer is A
Explanation
Choice A rationale
Shutting off the intravenous infusion is the immediate action to take when a client reports difficulty swallowing during infliximab infusion. This could indicate an infusion reaction or anaphylaxis, which requires immediate cessation of the infusion to prevent further complications.
Choice B rationale
Notifying the primary health care provider is important, but the immediate action should be to stop the infusion to prevent further adverse reactions.
Choice C rationale
Having the client take deep breaths and try to relax is not appropriate in this situation, as it does not address the potential infusion reaction or anaphylaxis.
Choice D rationale
Obtaining a prescription for oral diphenhydramine may be part of the treatment for an infusion reaction, but the immediate action should be to stop the infusion. .