A nurse is assisting with the care of an infant who has heart failure. Which of the following actions should the nurse take?

Choice A rationale:
Lethargy, or extreme fatigue and sluggishness, is a characteristic symptom of hypothyroidism. Hypothyroidism occurs due to an underactive thyroid gland, which leads to a decrease in metabolic activity and energy levels. Children with hypothyroidism often exhibit lethargy, weakness, and a lack of interest in activities. This is due to the reduced metabolic rate and overall slowing down of bodily functions.
Choice B rationale:
Diarrhea is not a common finding associated with hypothyroidism. In fact, hypothyroidism tends to slow down gastrointestinal motility, leading to constipation rather than diarrhea. Therefore, diarrhea is not expected as a symptom in a child with hypothyroidism.
Choice C rationale:
Tachycardia, an elevated heart rate, is not typically associated with hypothyroidism. Instead, hypothyroidism often leads to bradycardia (a slower-than-normal heart rate) due to the overall slowing of the body's metabolic processes.
Choice D rationale:
Hirsutism, which refers to excessive hair growth in areas where hair growth is typically seen in males, is not a common finding in hypothyroidism. Hirsutism is more commonly associated with hormonal imbalances such as polycystic ovary syndrome (PCOS) rather than hypothyroidism.

Choice A rationale:
Placing a toddler in a side-lying position on the affected side after administering otic medication is not recommended. This position can cause the medication to leak out, reducing its effectiveness, and can also increase the risk of infection. It's important to keep the medication in the ear canal for an adequate amount of time to allow it to work properly.
Choice B rationale:
Allowing the medication to reach room temperature prior to administration is not a critical step for otic medications. While warming certain medications can reduce discomfort, this is not a specific requirement for ear drops. Ensuring the cleanliness of the ear, proper positioning, and correct administration technique are more important.
Choice C rationale:
The correct choice. Sitting the child in an upright position is the recommended approach for administering otic medication. This position helps ensure that the medication remains in the ear canal and is not immediately expelled. It also facilitates better penetration of the medication into the ear canal, increasing its effectiveness.
Choice D rationale:
Gently pulling a child's ear upward is a technique used for administering otic medications to straighten the ear canal and allow better access to the medication. However, this step alone is not sufficient. Proper positioning of the child is equally important to prevent the medication from leaking out.