Correct Answer: A

Rationale: The correct answer is A: 'Wear low-heeled shoes.' Wearing low-heeled shoes helps prevent back strain by promoting proper posture. High heels can cause an imbalance in the body's alignment, leading to increased stress on the lower back. Choices B, C, and D are incorrect. Elevating the legs while sitting can help with circulation but does not directly prevent low back pain. Engaging in prolonged sitting can actually contribute to low back pain due to decreased muscle activity and increased pressure on the spine. Sleeping on a soft mattress may not provide adequate support for the back, potentially worsening back pain instead of preventing it.

Correct Answer: A

Rationale: The correct recommendation for a client with irritable bowel syndrome is to consume food high in bran fiber. Bran fiber promotes regularity and can help reduce symptoms of IBS. Choices B, C, and D are incorrect because increasing milk products, sweetening foods with fructose corn syrup, and consuming foods high in gluten can exacerbate symptoms of irritable bowel syndrome in some individuals.

Correct Answer: C

Rationale: The correct answer is C: Jugular vein distention. In left-sided heart failure, the left ventricle fails to efficiently pump blood to the body, causing increased pressure in the pulmonary circulation. This increased pressure can lead to symptoms like jugular vein distention, as blood backs up in the pulmonary circulation and causes congestion. Choices A, B, and D are incorrect: Peripheral edema is more commonly associated with right-sided heart failure, cough with frothy sputum is a sign of pulmonary edema which can occur in left-sided heart failure but is not as specific as jugular vein distention, and dependent edema is also more indicative of right-sided heart failure due to fluid retention and increased venous pressure in the systemic circulation.

Correct Answer: D

Rationale: The correct answer is to infuse the blood within 4 hours. This is crucial to prevent bacterial contamination and hemolysis during blood transfusions. Monitoring the client's blood glucose level every hour (Choice A) is not directly related to packed RBC transfusions. Administering the blood using a microdrip set (Choice B) may be appropriate for specific medications but is not a requirement for packed RBC transfusions. Assessing the client's vital signs every 2 hours (Choice C) is important for monitoring the client's overall condition but is not as time-sensitive as ensuring the timely infusion of packed RBCs.

Correct Answer: C

Rationale: In this scenario, with a fetal heart rate (FHR) baseline of 100/min for 15 minutes, the nurse should suspect maternal hypoglycemia. Maternal hypoglycemia can result in fetal bradycardia, which is defined as an FHR less than 110 beats per minute. Maternal hypoglycemia requires prompt intervention to prevent adverse outcomes for both the mother and the fetus. Maternal fever (Choice A) typically presents with tachycardia rather than bradycardia in the fetus. Fetal anemia (Choice B) is more likely to present with other signs such as pallor or tachycardia rather than bradycardia. Chorioamnionitis (Choice D) is characterized by maternal fever, uterine tenderness, and foul-smelling amniotic fluid, but it is not directly linked to the FHR baseline being 100/min.