Primary Aldosteronism Clinical Trial
Official title:
Primary Aldosteronism and Surgically Curable Forms in Hypertension Patients Using 11C-Metomidate
10% of patients with hypertension potentially have the treatable condition - primary aldosteronism. Primary aldosteronism (PA) is caused by either bilateral adrenal disease (~40%), managed with lifelong medications; or unilateral disease (~60%), cured with laparoscopic surgery (adrenalectomy). Unfortunately, many patients with curable hypertension remain undiagnosed and consequently develop cardiac disease and strokes. The difficulty with identifying curable unilateral disease is due to adrenal vein sampling (AVS): an invasive, and technically-difficult procedure, with inconclusive results in 50% of patients. An alternative novel imaging, 11C-metomidate Positron emission tomography-computed tomography (PET-CT), can detect adrenal tumors, and concurrently confirm their over-activity. It is non-invasive, non-operator-dependent, and can identify more patients with curable hypertension. Investigators hypothesize that 11C-metomidate PET-CT can accurately identify patients with surgically-curable unilateral adrenal disease among hypertensive Asians with primary aldosteronism.
25 patients with confirmed PA who are keen for a surgical cure if unilateral PA is confirmed, will undergo conventional tests, CT, AVS, as well as 11C-metomidate PET/CT. Results will be reviewed and discussed at a multidisciplinary meeting, and patients with unilateral PA will be offered surgery. Patients will be reviewed 6 months post surgery to assess for cure of PA. ;
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