The nurse teaches a pregnant woman about the presumptive, probable, and positive signs of pregnancy.
The woman demonstrates understanding of the nurse's instructions if she states that a positive sign of pregnancy is:.

Choice A rationale:

Cigarette smoke contains harmful chemicals that can cause birth defects and other complications during pregnancy. Pregnant women should avoid exposure to cigarette smoke to protect the developing fetus.

Choice B rationale:

Isotretinoin (Retin A) is a medication used to treat severe acne. It is known to cause severe birth defects and should be avoided during pregnancy. Women of childbearing age who are prescribed isotretinoin must use effective contraception to prevent pregnancy while taking the medication.

Choice C rationale:

Vitamin C, also known as ascorbic acid, is a water-soluble vitamin that is essential for various bodily functions. It is not a teratogen and is safe for consumption during pregnancy in recommended amounts. In fact, pregnant women are encouraged to consume an adequate amount of vitamin C to support their overall health and the development of the baby.

Choice D rationale:

Salicylic acid is commonly found in skincare products and is used to treat acne. While oral use of high doses of salicylic acid during pregnancy can be harmful, the small amounts used in topical skincare products are generally considered safe. However, it's advisable for pregnant women to use salicylic acid-containing products in moderation.

Choice E rationale:

Rubella, also known as German measles, is a contagious viral infection that can cause birth defects if a pregnant woman becomes infected, especially during the early stages of pregnancy. Rubella vaccination before pregnancy is recommended to prevent congenital rubella syndrome.

Choice A rationale:
Correction of acidosis is not the primary intervention for vaso-occlusive sickle cell crisis. The crisis primarily involves pain due to the obstruction of blood flow by sickled cells. Correcting acidosis is not a direct treatment for this condition.
Choice B rationale:
Adequate hydration is essential in managing vaso-occlusive sickle cell crisis. Proper hydration helps prevent dehydration, which can worsen the crisis and lead to complications. Hydration helps maintain blood flow and prevent further sickling of red blood cells.
Choice C rationale:
Pain management is a crucial intervention for a child with vaso-occlusive sickle cell crisis. Pain results from tissue ischemia caused by sickled red blood cells. Effective pain management, often with analgesics, helps improve the child's comfort and quality of life during the crisis.
Choice D rationale:
Administration of heparin is not indicated for vaso-occlusive sickle cell crisis. Heparin is an anticoagulant that prevents blood clot formation. In sickle cell crisis, the primary issue is the obstruction of blood flow by sickled cells, not the formation of clots. Administering heparin may not address the underlying problem and can lead to potential complications.
Choice E rationale:
Replacement of factor VIII is not relevant to vaso-occlusive sickle cell crisis. Factor VIII is a protein involved in blood clotting and is primarily used in the treatment of hemophilia, a different condition unrelated to sickle cell crisis.