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 B
Explanation
Choice A rationale
Avoiding bearing down is important for patients with certain conditions, but not specifically for Ménière’s disease.
Choice B rationale
Patients with Ménière’s disease should avoid sudden movements to prevent exacerbating vertigo and balance issues.
Choice C rationale
Increasing sodium intake can worsen fluid retention and symptoms of Ménière’s disease.
Choice D rationale
Increasing caffeine intake can exacerbate symptoms of Ménière’s disease, including tinnitus and vertigo.
Correct Answer is ["A","C","D"]
Explanation
Choice A rationale
A family history of breast cancer is a significant risk factor because genetic mutations, such as BRCA1 and BRCA2, can be inherited and increase the likelihood of developing breast cancer.
Choice B rationale
Multiparity (having multiple pregnancies) is generally considered to reduce the risk of breast cancer. This is because pregnancy and breastfeeding lower the number of menstrual cycles a woman has, reducing her lifetime exposure to estrogen.
Choice C rationale
Exposure of the chest to high-dose radiation, especially during childhood or young adulthood, increases the risk of breast cancer. Radiation can cause mutations in breast cells, leading to cancer.
Choice D rationale
Previous cancer of the breast, uterus, or ovaries increases the risk of developing breast cancer. This is due to shared risk factors and the possibility of metastasis or recurrence.