Final answer:
The primary nursing diagnosis for a child with diabetes insipidus is Deficient fluid volume related to dehydration, due to the inability of kidneys to retain water, leading to excessive urination and the need for constant fluid intake to prevent dehydration and electrolyte imbalance.
Step-by-step explanation:
The primary nursing diagnosis for a 7-year-old boy with diabetes insipidus would likely be A) Deficient fluid volume related to dehydration. This is because diabetes insipidus is characterized by the kidneys' inability to retain water, leading to excessive urination (polyuria) and increased thirst. Since water taken in is lost again, the patient must continuously consume water to avoid dehydration. In severe cases, this can lead to dangerous electrolyte imbalances.
Diabetes insipidus results from a chronic underproduction of the antidiuretic hormone (ADH) or a mutation in the ADH receptor. Without adequate levels of ADH, water is not reabsorbed by the kidneys and is excreted, which necessitates a high fluid intake to prevent dehydration.
Considering the critical nature of maintaining proper hydration status, especially in children, monitoring fluid intake and output is vital to ensure the child's safety and well-being.