Inappropriate ADH secretion will manifest as

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Multiple Choice

Inappropriate ADH secretion will manifest as

Explanation:
High ADH causes the kidneys to retain more water without a corresponding increase in solutes, which dilutes the blood and lowers serum sodium. This dilutional hyponatremia is the hallmark of inappropriate ADH secretion. The other options describe higher sodium, or unrelated changes such as glucose or potassium, which aren’t caused by excess ADH. In SIADH you’d also expect low serum osmolality with concentrated urine, but the key point is the hyponatremia from water retention.

High ADH causes the kidneys to retain more water without a corresponding increase in solutes, which dilutes the blood and lowers serum sodium. This dilutional hyponatremia is the hallmark of inappropriate ADH secretion. The other options describe higher sodium, or unrelated changes such as glucose or potassium, which aren’t caused by excess ADH. In SIADH you’d also expect low serum osmolality with concentrated urine, but the key point is the hyponatremia from water retention.

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