Correct Answer: C

Rationale:
Choice A is wrong because the nurse should not hold the hand flat to perform percussions on the child. Percussions are rhythmic clapping on the chest wall to loosen the mucus. The nurse should use a cupped hand to create a small air pocket that enhances the vibrations and prevents bruising.
Choice B is wrong because the nurse should not perform the procedure twice a day. The recommended frequency of postural drainage is 3 to 4 times a day, or more if needed, depending on the child's condition and tolerance. This is because postural drainage involves positioning the child in different ways to help drain the mucus from the lungs. If the child has a full stomach, this can cause nausea, vomiting, or aspiration.
Therefore, the nurse should perform the procedure before meals or at least 1 hour after meals.
Choice D is wrong because the nurse should not administer a bronchodilator after the procedure. A bronchodilator is a medication that relaxes and widens the airways, making it easier to breathe. The nurse should administer a bronchodilator before the procedure to enhance the effectiveness of postural drainage.

Correct Answer: B

Rationale: Fatigue is expected in anemia due to reduced oxygen-carrying capacity. Fever, hypertension, or weight gain are not typical.

Correct Answer: C

Rationale: Taking levothyroxine in the morning on an empty stomach (30-60 minutes before food or other medications) ensures optimal absorption and efficacy for treating hypothyroidism.
Choice A is wrong because taking levothyroxine with a meal can reduce absorption, decreasing its effectiveness; it should be taken on an empty stomach.
Choice B is wrong because it typically takes 4-6 weeks for levothyroxine to stabilize thyroid hormone levels and for symptoms to improve, not 1 week.
Choice D is wrong because thyroid function tests are typically checked every 6-8 weeks initially to adjust the dose, then every 6-12 months once stable, not automatically every 12 months.

Correct Answer: A

Rationale: Soy products can interfere with levothyroxine absorption by binding to the medication in the gastrointestinal tract, reducing its effectiveness, and should be avoided at the same time as the dose.
Choice B is incorrect because bananas do not affect levothyroxine absorption and are safe to consume.
Choice C is incorrect because lean beef does not significantly impact levothyroxine absorption, though high-protein meals may have a minor effect if taken concurrently.
Choice D is incorrect because carrots do not interfere with levothyroxine absorption.

Correct Answer: C

Rationale: Crackles in bilateral lung bases indicate fluid accumulation or infection in the lungs, a concerning finding in pneumonia that may suggest worsening condition or complications like pulmonary edema, requiring immediate reporting.
Choice A is incorrect because an oxygen saturation of 92% is borderline but not immediately alarming in pneumonia, especially if the client is receiving oxygen; it should be monitored.
Choice B is incorrect because a respiratory rate of 24/min is slightly elevated but expected in pneumonia and not the priority to report.
Choice D is incorrect because a temperature of 37.8°C is a low-grade fever, common in pneumonia, and does not require immediate reporting unless persistent or accompanied by other symptoms.