REN and Hypokalemia: This is because surgery can not only restore normal blood pressure and obviate the need for antihypertensive medications, but also, by removing the source of aldosterone over-secretion, can normalize the renin-angiotensin-aldosterone system and correct concomitant abnormalities of hypokalemia, alkalosis, and fibrosis in multiple organs, such as the heart, kidney, and pancreas, caused by high levels of aldosterone [6–8].