A school nurse identifies that a child has pediculosis capitis and educates the child's parents about the condition. Which of the following statements by the parents indicates an understanding of the teaching?

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 reason: This choice is incorrect because bradycardia is not a common finding in a child who is in a sickle cell crisis. Bradycardia is a condition in which the heart rate is slower than normal (less than 60 beats per minute). It may be caused by various factors such as hypothermia, hypothyroidism, or medication side effects, but it does not indicate a sickle cell crisis.

Choice B reason: This choice is incorrect because constipation is not a common finding in a child who is in a sickle cell crisis. Constipation is a condition in which the bowel movements are infrequent, hard, or difficult to pass. It may be caused by various factors such as dehydration, a low-fiber diet, or lack of physical activity, but it does not indicate a sickle cell crisis.

Choice C reason: This choice is correct because pain is a common finding in a child who is in a sickle cell crisis. Sickle cell crisis is a condition in which the red blood cells 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.

Choice D reason: This choice is incorrect because high fever is not a specific finding in a child who is in a sickle cell crisis. High fever may indicate infection, inflammation, or dehydration, but it does not indicate sickle cell crisis. However, the infection can trigger or worsen the sickle cell crisis, so it should be treated promptly with antibiotics and fluids.