Primary Aldosteronism Clinical Trial
Official title:
Corticotropin Stimulation in Adrenal Venous Sampling for Patients With Primary Aldosteronism The ADOPA Randomized Clinical Trial
To compare the effect of different procedures of AVS(with or without ACTH stimulation) on the long-term outcomes of patients with PA
This is a prospective and randomized study involving patients with primary aldosteronism(PA) who completed AVS. All paticipants will be randomized into ACTH-stimulated group(Intervention group) and ACTH-unstimulated group(Control group) Cannulation was considered successful when the selectivity index (SI), namely plasma cortisol concentration (PCC) in adrenal vein/PCC in IVC≥3 with ACTH stimulation or SI≥2 without ACTH stimulation. The ratio of PAC: PCC on the side with the higher ratio over the contralateral PAC: PCC ratio is defined as the lateralization index (LI). Lateralization of aldosterone excess was defined as LI≥4 irrespective of ACTH use. Patients with LI between 2 and 4 together with contralateral suppression (PAC/PCC of non-dominant side < PAC/PCC of IVC) or CT showing a typical adenoma on the dominant side were also considered to have lateralized disease. Patients with LI < 2 or LI 2-4 without meeting the above criteria were diagnosed as BPA. In case of technical AVS failure or bilateral PAC/PCC in adrenal venous blood lower than peripheral blood, if the patient meets one of the following criteria, adrenalectomy was recommended: 1) unilateral nodule on CT (≥ 1 cm), no observable nodules or hyperplasia on contralateral adrenal, and PAC ≥ 20 ng/dl, PRC < 5 μIU/ml, K ≤ 3.5mmol/l; 2) unilateral nodule on CT (≥ 1 cm), no observable nodules or hyperplasia on contralateral adrenal, and the contralateral index≤0.5 in AVS. Surgical intervention is recommended for unilateral PA (UPA) whereas bilateral PA (BPA) is typically treated with oral mineralocorticoid receptor antagonists such as spironolactone. The aim is to compare the long-term outcomes of patients with PA. To evaluate whether the treatment decision (surgical or medical treatment) based on different AVS procedures (with or without ACTH stimulation) would lead to different outcomes in patients with PA. ;
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