A nurse is providing teaching about iron deficiency anemia to the parents of an infant. Which of the following should the nurse recommend as a method of preventing iron deficiency anemia?

Choice A reason: This choice is incorrect because a 1-year-old toddler who has roseola and a temperature of 39° C (102.2° F) is not the most urgent case to assess. Roseola is a viral infection that causes a rash on the trunk and limbs, followed by a high fever that lasts for several days. It usually affects infants and young children and is self-limiting.
The fever can be managed by giving antipyretics such as acetaminophen or ibuprofen, and by providing fluids and comfort measures. The fever does not indicate any serious complication or threat to life.

Choice B reason: This choice is incorrect because a 4-year-old child who has asthma and an O2 sat of 97% is not the most urgent case to assess. Asthma is a chronic respiratory condition that causes inflammation and narrowing of the airways, leading to wheezing, coughing, chest tightness, or shortness of breath. It may be triggered by allergens, irritants, exercise, or infections. The O2 sat is a measure of oxygen saturation in the blood, which indicates how well oxygen is delivered to the tissues. A normal O2 sat range is 95% to 100%, so an O2 sat of 97% indicates that the child has adequate oxygenation and is not in respiratory distress.

Choice C reason: This choice is correct because a 10-year-old child who has sickle cell anemia and reports severe chest pain is the most urgent case to assess. Sickle cell anemia is a genetic disorder that causes the red blood cells to become sickle-shaped and clump together, blocking the blood flow and oxygen delivery to the organs and tissues. It may cause severe pain in the chest, abdomen, joints, or bones, as well as symptoms such as pallor, jaundice, fatigue, or shortness of breath. Severe chest pain may indicate acute chest syndrome, which is a life-threatening complication of sickle cell anemia that involves infection or infarction of the lungs. It may cause fever, cough, hypoxia, or respiratory failure. Therefore, assessing and treating this child is a priority to prevent further damage and death.

Choice D reason: This choice is incorrect because a 7-year-old child who has diabetes insipidus and a urine specific gravity of 1.016 is not the most urgent case to assess. Diabetes insipidus is a rare disorder that affects the balance of fluids in the body. It causes the kidneys to produce large amounts of dilute urine, leading to polyuria, polydipsia, dehydration, or electrolyte imbalance. It may be caused by a deficiency of antidiuretic hormone (ADH) or a resistance to its action. The urine specific gravity is a measure of urine concentration, which indicates how well the kidneys are functioning. A normal urine specific gravity range is 1.005 to 1.030, so a urine specific gravity of 1.016 indicates that the child has normal urine concentration and is not dehydrated.

Choice A: Using a pincer grasp indicates a need for further evaluation, as it is a developmental milestone that is usually achieved by 9 to 10 months of age. A pincer grasp is the ability to pick up small objects using the thumb and index finger. A 7-month-old infant should be able to use a raking grasp, which is the ability to scoop up objects using all fingers.

Choice B: Having a fear of strangers does not indicate a need for further evaluation, as it is a normal and expected behavior for a 7-month-old infant. A fear of strangers is a sign of attachment and recognition of familiar and unfamiliar faces. A 7-month-old infant may cry, cling, or turn away from strangers.

Choice C: Showing preferences towards foods does not indicate a need for further evaluation, as it is a normal and expected behavior for a 7-month-old infant. Showing preferences towards foods is a sign of individuality and taste development. A 7-month-old infant may accept or reject certain foods based on their flavor, texture, or appearance.

Choice D: Babbling one-syllable sounds does not indicate a need for further evaluation, as it is a normal and expected behavior for a 7-month-old infant. Babbling one-syllable sounds is a sign of language and communication development. A 7-month-old infant may make sounds such as "ba", "da", "ga", or "ma".