New concepts in adrenal vein sampling for aldosterone in the diagnosis of primary aldosteronism

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Abstract
Improved diagnostic techniques and adoption of a systematic and thorough diagnostic workup can lead to identification of the surgically correctable forms of primary aldosteronism (PA) far more frequently than expected. Adrenalectomy can provide long-term normalization of blood pressure and correction of PA in most patients with an aldosterone-producing adenoma. Forms needing surgical correction are generally held to be less common than forms requiring medical therapy; however, this can be a misconception arising from the lack of systematic use of adrenal vein sampling (AVS). Currently AVS still remains the “gold standard” for identifying unilateral causes of PA that are surgically curable. The criteria for selecting patients to undergo AVS, the technique for performing AVS, and the criteria for analyzing and interpreting its results are summarized here.