Primary Hyperaldosterinism

Summary

1. Definition:

  • Characterized by excessive production of aldosterone by adrenal glands.
  • sometimes reffered as Conn Syndrome

2. Causes:

  • Most common cause: Adrenal adenoma (benign tumor).
  • Less common: Adrenal hyperplasia, Adrenal carcinoma.

3. Clinical Features:

  • Hypertension resistant to usual treatment.
  • Features of hypokalemia
    • Muscle weakness, fatigue.
    • Headaches.
  • Mild pedal edema (swelling of feet and ankles).
    • Absence of significant edema due to aldosterone escape mechanism

4. Diagnosis:

  • Elevated aldosterone levels.
  • Low renin activity.
  • Imaging studies (CT/MRI) to detect adrenal adenoma.

5. Treatment:

  • Medications: Spironolactone (mineralocorticoid receptor antagonist).
  • Surgical removal of adrenal adenoma (adrenalectomy).
  • Lifestyle modifications: Low-salt diet, weight management.

Epidemiology