A nurse working on an outpatient surgical unit is providing discharge teaching to the parent of a preschooler following placement of tympanoplasty tubes. The parent asks the nurse, "What should I do if the tubes fall out?" Which of the following responses should the nurse make?

A. Iron deficiency anemia: Whole milk is a poor source of iron, and excessive consumption of whole milk can displace iron-rich foods from the diet. Therefore, a toddler who consumes a large amount of whole milk and has a poor appetite is at risk for iron deficiency anemia due to inadequate iron intake. Iron deficiency anemia is characterized by low levels of iron in the body, leading to decreased production of red blood cells and impaired oxygen transport.

B. Vitamin A toxicity: While excessive intake of vitamin A can lead to toxicity, it is unlikely to occur from consuming whole milk alone. Vitamin A toxicity is more commonly associated with excessive intake of vitamin A supplements or foods that are rich in preformed vitamin A, such as liver. Therefore, vitamin A toxicity is not a significant risk for a toddler who drinks whole milk.

C. Impaired carbohydrate metabolism: There is no direct relationship between whole milk consumption and impaired carbohydrate metabolism. Impaired carbohydrate metabolism is typically associated with conditions such as diabetes mellitus or metabolic syndrome, rather than dietary factors like milk consumption.

D. Lactose intolerance: Lactose intolerance is the inability to digest lactose, the sugar found in milk and dairy products, due to a deficiency of the enzyme lactase. While excessive consumption of whole milk may exacerbate symptoms in a child with lactose intolerance, it is not a risk factor for developing lactose intolerance itself. Lactose intolerance is more commonly observed in individuals of certain ethnic backgrounds or those with a genetic predisposition.

A. Decreased respiratory rate: AKI typically does not directly affect respiratory rate. Respiratory rate is more closely related to lung function and oxygenation status rather than kidney function.

B. Polyuria: This is an incorrect option. Polyuria, or increased urine output, is not typically seen in acute kidney injury. In fact, oliguria (decreased urine output) or anuria (absence of urine output) are more common in AKI due to decreased kidney function.

C. Hyperactivity: AKI does not typically cause hyperactivity. In fact, children with AKI may appear lethargic or fatigued due to the buildup of waste products in their bodies and electrolyte imbalances.

D. Edema: This is the correct option. Edema, or swelling due to fluid retention, is a common clinical manifestation of AKI. When the kidneys are unable to adequately filter and excrete excess fluid from the body, fluid accumulates in the tissues, leading to edema. Edema may be particularly noticeable in the face, hands, feet, or around the eyes.