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. .
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","C","D"]
Explanation
Choice A rationale
A nagging cough is one of the seven warning signs of cancer. Persistent coughing or hoarseness can indicate lung cancer or other cancers affecting the respiratory system. It is important to investigate any chronic cough that does not resolve with standard treatment.
Choice B rationale
A non-healing sore is another warning sign of cancer. Sores that do not heal, especially in the mouth or on the skin, can be indicative of skin cancer or oral cancer. These sores may bleed, ooze, or become crusty and should be evaluated by a healthcare provider.
Choice C rationale
A change in moles is a significant warning sign of skin cancer, particularly melanoma. Changes in size, shape, color, or texture of a mole, or the appearance of new moles, should be assessed by a healthcare provider. Early detection of skin changes can lead to prompt treatment and better outcomes.
Choice D rationale
A change in bowel pattern is a warning sign of colorectal cancer. Symptoms such as persistent diarrhea, constipation, or changes in stool consistency or color can indicate an underlying malignancy in the digestive tract. It is important to seek medical evaluation for any unexplained changes in bowel habits.
Choice E rationale
Bloating is not typically included in the seven warning signs of cancer. While bloating can be a symptom of various conditions, including ovarian cancer, it is not one of the primary warning signs used to identify cancer. The focus should be on the more specific signs listed above. .
Correct Answer is D
Explanation
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.
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. .
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