Okay, let's tackle this question. The user is asking about hyperaldosteronism and which effect it doesn't cause. First, I need to recall the pathophysiology of hyperaldosteronism. Aldosterone is a mineralocorticoid produced by the adrenal cortex. Its main role is to increase sodium reabsorption and potassium excretion in the distal tubules of the kidneys.

So, hyperaldosteronism would lead to increased sodium retention, which causes volume expansion and hypertension. Potassium levels would drop because more is excreted, leading to hypokalemia. Metabolic alkalosis can occur due to hydrogen ion loss in exchange for sodium reabsorption.

Now, the question is asking which of the options is NOT a feature. The options aren't provided, but common distractors might include hyperkalemia, hyponatremia, hypokalemia, or metabolic acidosis. Let's think: hyperaldosteronism causes hypokalemia, not hyperkalemia. So if an option says hyperkalemia, that's incorrect. Also, it causes metabolic alkalosis, not acidosis. So if an option lists metabolic acidosis, that's the exception. Hyponatremia could be a distractor if someone confuses it with other conditions like SIADH, but in hyperaldosteronism, sodium is retained, so hyponatremia isn't typical unless there's another factor. Wait, but if there's volume expansion, the plasma sodium concentration might be normal or low due to dilution. Hmm, but hypervolemia usually leads to hyponatremia if there's excess fluid, but in hyperaldosteronism, sodium retention is due to increased aldosterone, leading to higher extracellular fluid volume. However, the plasma sodium concentration might actually be normal or slightly low. So maybe hyponatremia is a possible distractor here.

Wait, but in primary hyperaldosteronism (Conn's syndrome), the main issues are hypertension, hypokalemia, and metabolic alkalosis. So if an option includes hyperkalemia, metabolic acidosis, or normotension, those would be incorrect. Let's structure the answer. The core concept is the effects of excess aldosterone on electrolytes and blood pressure. The correct answer would be the one that's not a typical feature. Let's say the options are A. Hypertension, B. Hypokalemia, C. Metabolic alkalosis, D. Hyperkalemia. Then D is the correct answer because hyperkalemia is not a feature. Alternatively, if an option is metabolic acidosis, that's also incorrect. So the explanation should cover the correct option and why the others are wrong. Need to make sure each section is covered as per the user's instructions.

**Core Concept**
Hyperaldosteronism, caused by excessive aldosterone production (e.g., Conn’s syndrome), leads to **sodium retention**, **potassium loss**, and **volume expansion**. Key effects include hypertension, hypokalemia, and metabolic alkalosis due to **Na⁺-K⁺ exchange** in the distal tubules and **H⁺ excretion**.

**Why the Correct Answer is Right**
The correct option is the **exception** not caused by hyperaldosteronism. For example, **hyperkalem

✓ Correct Answer: C. Metabolic acidosis