Why does an elderly patient with diminished kidney function and reduced sensitivity to thirst experience a higher risk of dehydration when prescribed diuretics for hypertension?

💡 Explanation

The elderly patient is at higher risk because the reduced sensitivity to thirst delays their fluid intake, leading to a slower compensatory response to fluid loss induced by diuretics. Therefore, dehydration becomes likely, rather than direct ADH inhibition or kidney sodium retention which are independent mechanisms.

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