Primary Aldosteronism: Diagnosis and Management

Area of Science:

• Endocrinology
• Nephrology
• Cardiovascular Medicine

Background:

• Primary aldosteronism (PA) is a frequent yet often overlooked cause of secondary hypertension.
• PA results from idiopathic hyperaldosteronism (bilateral adrenal involvement) or aldosterone-producing adenomas (unilateral involvement).

Purpose of the Study:

• To outline the diagnostic and treatment strategies for primary aldosteronism.
• To differentiate management approaches based on unilateral versus bilateral adrenal gland involvement.

Main Methods:

• Initial diagnosis involves assessing the plasma aldosterone to renin ratio.
• Imaging techniques like CT or MRI are used for localization.
• Adrenal vein sampling confirms the extent of adrenal gland involvement.

Main Results:

• Adrenalectomy offers a high likelihood of biochemical cure for unilateral PA in surgical candidates.
• Blood pressure improvement post-adrenalectomy occurs in 30-50% of patients.
• Mineralocorticoid antagonists are the primary treatment for bilateral PA or non-surgical candidates.

Conclusions:

• Accurate diagnosis and localization are crucial for effective primary aldosteronism management.
• Treatment decisions for PA should be tailored to the specific adrenal gland involvement and patient candidacy for surgery.
• While surgery can resolve biochemical abnormalities, significant blood pressure improvement varies in patients with unilateral PA.