Related Questions
Correct Answer is B
Explanation
Choice A: Striae gravidarum are stretch marks that appear on the abdomen, breasts, or thighs during pregnancy. They are caused by the tearing of the connective tissue in the dermis due to rapid growth or weight gain.
Choice B: Linea nigra is a dark vertical line that runs from the umbilicus to the pubic area. It is caused by increased melanin production due to hormonal changes during pregnancy. This is the correct choice because it matches the description in the question.
Choice C: Vascular spiders are dilated blood vessels that appear on the skin as red or purple spider-like lesions. They are caused by increased estrogen levels and blood volume during pregnancy. They are usually found on the face, neck, chest, or arms.
Choice D: Melasma is a condition that causes brown or gray patches on the face, especially on the forehead, cheeks, nose, or upper lip. It is caused by increased melanin production due to sun exposure and hormonal changes during pregnancy. It is also known as chloasma or the mask of pregnancy.

Correct Answer is C
Explanation
Choice A Reason: This is incorrect because administering Rho(D) immune globulin 24 hours before delivery is too early and may not provide adequate protection for the fetus. Administering it 24 hours after delivery is too late and may not prevent the mother from developing antibodies against the fetal Rh-positive blood cells.
Choice B Reason: This is incorrect because administering Rho(D) immune globulin in the first trimester is unnecessary and may not be effective, as the risk of Rh isoimmunization is very low before 28 weeks of gestation. Administering it within 2 hours of delivery is appropriate, but not sufficient, as it should be repeated within 72 hours after delivery.
Choice C Reason: This is correct because administering Rho(D) immune globulin at 28 weeks gestation and again within 72 hours after delivery is the recommended schedule for preventing Rh isoimmunization in Rh-negative pregnant women who have Rh-positive partners. This regimen can prevent up to 99% of cases of Rh isoimmunization by blocking the maternal immune response to the fetal Rh-positive blood cells.
Choice D Reason: This is incorrect because administering Rho(D) immune globulin at 32 weeks gestation is too late and may not prevent Rh isoimmunization if there has been any fetal-maternal hemorrhage before that time. Administering it immediately before discharge is also too late and may not prevent the mother from developing antibodies against the fetal Rh-positive blood cells.
