Excessive production of aldosterone results in –
**Core Concept**
Excessive production of aldosterone, a mineralocorticoid hormone, leads to an imbalance in electrolyte levels, particularly sodium and potassium. This condition is known as primary aldosteronism, which can cause hypertension and hypokalemia.
**Why the Correct Answer is Right**
Aldosterone stimulates the distal convoluted tubules and collecting ducts of the kidneys to reabsorb sodium and water, leading to increased blood volume and blood pressure. The hormone also promotes the excretion of potassium ions (K+), resulting in hypokalemia. This is achieved through the activation of the mineralocorticoid receptor, which regulates the expression of genes involved in sodium and potassium transport.
**Why Each Wrong Option is Incorrect**
**Option A:** This is incorrect because excessive aldosterone production primarily affects sodium and potassium levels, not calcium.
**Option B:** This is incorrect because the condition is primarily due to the effects of aldosterone on the kidneys, not the adrenal glands.
**Option C:** This is incorrect because hypokalemia is the direct result of aldosterone's action on the kidneys, not the primary cause of the condition.
**Clinical Pearl / High-Yield Fact**
Primary aldosteronism can be diagnosed using the aldosterone-to-renin ratio (ARR) test, which measures the levels of aldosterone and renin in the blood. A high ARR indicates excessive aldosterone production.
**Correct Answer: D. Hypertension and hypokalemia.**