A nurse is obtaining vital signs from a 2-month-old infant. The infant's heart rate is 190/min and his temperature is 40° C (104° F). The father asks the nurse why the infant's heart is beating so fast. Which of the following responses by the nurse is appropriate?

D. A client's blood pressure changes from 112/60 mm Hg to 90/54 mm Hg when standing.
A significant drop in blood pressure when changing positions from lying to standing may indicate orthostatic hypotension, which can be a sign of dehydration, blood loss, or other underlying medical issues. This can be a cause for concern, especially if the client is an adolescent, as it may lead to decreased perfusion of vital organs and may require immediate medical attention.

The other options are as follows:
A. A client who has a burn injury to an estimated 5% of his leg and is crying - While it's essential to assess and address the client's pain and comfort, this finding does not indicate an immediate need for medical attention. Pain management and wound care can be addressed based on the severity of the burn and the client's pain level.
B. A client who has an ankle fracture reports a pain level increase from 3 to 5 after initial ambulation - This finding is concerning, and the nurse should notify the provider to reassess pain management and evaluate for potential complications related to the fracture. However, it may not require immediate medical attention unless there are signs of severe pain or complications.
C. A client who is 1 day postoperative and has a temperature of 37.5° C (99.5° F) - A slight increase in temperature in the immediate postoperative period may not be unusual and can be attributed to the normal inflammatory response after surgery. The nurse should continue monitoring the client's temperature and report any further changes or additional signs of infection or complications to the provider.
Overall, while all findings should be addressed and managed appropriately, the significant drop in blood pressure (option D) should be reported immediately due to the potential implications for the client's overall health and well-being.

Consuming a large amount of milk, such as a quart a day, can lead to iron deficiency anemia in toddlers. Milk is a poor source of iron, and excessive milk intake can displace other iron-rich foods from the toddler's diet.

Iron deficiency anemia occurs when the body lacks sufficient iron to produce enough hemoglobin, which is essential for oxygen transport in the blood. Toddlers are particularly vulnerable to iron deficiency anemia because they have increased iron needs for growth and development.

Option A (Obesity) and option B (Diabetes mellitus) are not directly related to the toddler's milk consumption. Obesity may be a concern if the child consumes excessive calories overall, but it is not specifically associated with milk intake. Similarly, diabetes mellitus is not directly related to milk consumption.

Option D (Rickets) is caused by a deficiency of vitamin D, not iron. Rickets results in weakened and deformed bones, and it is usually associated with inadequate sunlight exposure and insufficient dietary vitamin D. While milk is often fortified with vitamin D, excessive milk intake can displace other vitamin D sources in the diet and contribute to an increased risk of rickets, but the primary concern with excessive milk intake is iron deficiency anemia.