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 D
Explanation
Choice A rationale
Actinic keratosis is a precancerous condition that appears as rough, scaly patches on sun-exposed skin.
Choice B rationale
Malignant melanoma is a more aggressive form of skin cancer that often appears as a new, unusual growth or a change in an existing mole.
Choice C rationale
Squamous cell carcinoma typically appears as a firm, red nodule or a flat lesion with a scaly, crusted surface.
Choice D rationale
Basal cell carcinoma often appears as a raised, flesh-colored lesion with pearly and waxy borders. It is the most common type of skin cancer and typically occurs in areas exposed to the sun.
Correct Answer is B
Explanation
Choice A rationale
Vision may be temporarily blurred after intraocular lens surgery, but significant vision reduction for 48 hours is not typical and should be reported to a healthcare provider.
Choice B rationale
Restricting lifting objects greater than 10 pounds is crucial to prevent increased intraocular pressure and potential complications after surgery.
Choice C rationale
Aspirin should be avoided as it can increase the risk of bleeding. Alternative pain relief methods should be used.
Choice D rationale
Warm compresses are not recommended as they can increase inflammation and discomfort. Cold compresses may be more appropriate.