Correct Answer: A

Rationale: In the scenario of a client developing urticaria during a blood transfusion, the immediate priority for the nurse is to stop the infusion. This action is crucial to prevent further administration of the allergen causing the reaction. Slowing the rate of infusion (Choice B) may not be sufficient to address the allergic response effectively. While monitoring vital signs (Choice C) is important, stopping the infusion takes precedence to prevent worsening of the reaction. Administering Benadryl (Choice D) should be considered after stopping the infusion, following the healthcare provider's orders, and assessing the client's condition.

Correct Answer: C

Rationale: When evaluating the therapeutic effectiveness of digoxin in a client with heart failure, the nurse should expect to find improved respiratory status and increased urinary output. Digoxin helps improve cardiac output and reduces fluid accumulation, leading to improved breathing and increased urinary output. Choices A, B, and D are incorrect because diaphoresis with decreased urinary output, increased heart rate with increased respirations, and decreased chest pain with decreased blood pressure are not indicative of the therapeutic effectiveness of digoxin in heart failure management.

Correct Answer: D

Rationale: Skim milk is a reliable source of Vitamin B12, which is essential for the health of both the mother and the developing fetus. While figs, broccoli, and stewed tomatoes are nutritious foods, they are not significant sources of Vitamin B12. Figs are a good source of fiber and other vitamins, broccoli is rich in Vitamin C and K, and stewed tomatoes are high in Vitamin C and antioxidants, but they do not contain Vitamin B12 as much as skim milk does.

Correct Answer: C

Rationale: A cold, pale lower leg is the most concerning finding as it indicates poor blood flow, potentially suggesting a serious circulatory problem that requires immediate attention. Diminished bowel sounds, loss of appetite, and tachypnea may be relevant but are not as indicative of a critical circulatory issue as a cold, pale lower leg.

Correct Answer: C

Rationale: The correct answer is C. Eating crackers before getting out of bed can help manage nausea associated with hyperemesis gravidarum. Choice A is incorrect because drinking water with meals may exacerbate nausea. Choice B is incorrect as eating every 6 hours may not be frequent enough to combat nausea and vomiting. Choice D is incorrect because protein intake should not be limited during pregnancy, especially in cases of hyperemesis gravidarum.