If a stroke patient has a sodium level of 128, low urine output, and weight gain, the nurse would expect which condition?

A sodium level of 128 indicates hyponatremia, which can be a significant concern in a stroke patient. The combination of low urine output and weight gain suggests fluid retention. In the context of these findings, the presence of hyponatremia alongside low urine output and weight gain is highly consistent with the Syndrome of Inappropriate Secretion of Antidiuretic Hormone (SIADH).

SIADH occurs when excess antidiuretic hormone (ADH) is released, leading to increased water reabsorption in the kidneys. This results in diluted sodium levels in the serum (hyponatremia) while promoting water retention, thus causing low urine output and potentially weight gain as excess fluid accumulates in the body. SIADH is often seen in patients with central nervous system events, such as strokes, due to the impact on brain regions that regulate thirst and fluid balance.

In contrast, conditions like diabetes insipidus typically present with high urine output, dehydration, and hypernatremia rather than hyponatremia. Acute renal failure could cause alterations in fluid balance, but the specific combination of low sodium, weight gain, and low urine output aligns more closely with SIADH. Adrenal insufficiency