A patient undergoing dialysis experiences a sudden drop in blood pressure. What causes the compensatory ADH release in response to this plasma volume shift?

💡 Explanation

A drop in blood pressure reduces baroreceptor firing, which stimulates ADH release to increase water reabsorption, because the body attempts to maintain blood volume and pressure; therefore, ADH increases, rather than decreasing due to atrial peptides, plasma osmolality, or hypothalamic input alone.

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