A client with diabetes insipidus (DI) has an average urinary output of 500 ml. of dilute urine every hour for the last 4 hours. Which laboratory test is most important for the nurse to monitor?

Choice A rationale: Misplacing car keys occasionally is a common occurrence and may not necessarily indicate Alzheimer's disease. It can happen to anyone, especially when distracted or in a hurry.

Choice B rationale: Difficulty performing familiar tasks, such as cooking a meal or driving to a familiar location, is an early warning sign of Alzheimer's disease. It indicates changes in cognitive function.

Choice C rationale: Losing sense of time, such as not knowing the date, day of the week, or season, can be an early indicator of Alzheimer's disease. It reflects impairments in temporal orientation.

Choice D rationale: Problems with performing basic calculations, such as managing finances or following a recipe, are early signs of Alzheimer's disease. It shows a decline in cognitive abilities related to numbers and problem-solving.

Choice E rationale: Becoming lost in a usually familiar environment, such as getting disoriented in one's own neighborhood, is a significant early warning sign of Alzheimer's disease. It suggests spatial and memory impairments.

A) Incorrect- Furosemide is a loop diuretic used to treat conditions such as edema and hypertension. It does not directly relate to the client's history of gout or the risk of calcium kidney stones.
B) Incorrect- Low-dose aspirin is often used for its antiplatelet effects to prevent cardiovascular events. It does not directly relate to the client's history of gout or the risk of calcium kidney stones.
C) Correct- Allopurinol is a medication used to treat gout by reducing the production of uric acid in the body. However, allopurinol can also increase the risk of forming calcium oxalate kidney stones, which is the type of kidney stone mentioned in the client's history. Calcium oxalate stones are the most common type of kidney stone, and they are composed primarily of calcium and oxalate. In this case, the client has a history of gout and is prescribed allopurinol. The nurse should bring the client's prescription for allopurinol to the healthcare provider's attention because

it has the potential to contribute to the formation of kidney stones, which could exacerbate the client's existing condition.
D) Incorrect- Enalapril is an angiotensin-converting enzyme (ACE) inhibitor used to treat hypertension and heart failure. It does not directly relate to the client's history of gout or the risk of calcium kidney stones.