Correct Answer: B

Rationale: The correct answer is B, Hemolytic anemia. Normocytic-normochromic anemia is a type of anemia characterized by normal-sized and normal-colored red blood cells. Hemolytic anemia is a condition where red blood cells are destroyed prematurely, leading to normocytic-normochromic anemia. Sideroblastic anemia (Choice A) is characterized by ringed sideroblasts in the bone marrow. Pernicious anemia (Choice C) is due to vitamin B12 deficiency. Iron deficiency anemia (Choice D) is characterized by microcytic-hypochromic red blood cells.

Correct Answer: C

Rationale: The correct answer is C: 'Report any side effects such as dizziness or fainting.' Patients taking tamsulosin should be advised to report any side effects, such as dizziness or fainting, which can occur due to orthostatic hypotension. Choices A, B, and D are incorrect because avoiding lying down after taking the medication, taking it with meals, or at bedtime are not specific teaching points related to the potential side effects of tamsulosin.

Correct Answer: A

Rationale: The critical point the nurse should include in patient education for a patient prescribed tamoxifen is that it may increase the risk of venous thromboembolism. This is crucial information because tamoxifen is known to promote blood clot formation, and patients need to be aware of the signs and symptoms of blood clots to seek prompt medical attention. Choices B, C, and D are incorrect as tamoxifen is not associated with decreasing the risk of osteoporosis, causing hot flashes and other menopausal symptoms, or directly causing weight gain and fluid retention.

Correct Answer: C

Rationale: In this scenario, a decubitus ulcer on the coccyx indicates a breakdown of the skin's integrity due to prolonged pressure. The skin is the primary defense mechanism of the body against external pathogens. When the skin is compromised, it can lead to infections and other complications. The mucous membrane (Choice A) plays a role in protecting internal surfaces, not the skin. The respiratory tract (Choice B) is involved in breathing and not directly related to the skin's defense. The gastrointestinal tract (Choice D) is responsible for digestion and absorption of nutrients, not the primary defense mechanism against external threats like the skin.

Correct Answer: B

Rationale: The correct answer is B. Cerebrospinal fluid primarily cushions the brain and spinal cord, protecting them from injury. Choice A is incorrect because while CSF contributes to the brain's immune environment, its main role is not providing immune protection as a physical barrier. Choice C is incorrect because CSF has a significant role in the exchange of nutrients and waste products, rather than a limited one. Choice D is incorrect as CSF is not primarily a medium for nerve impulse transmission, but rather serves as a protective and supportive fluid.