Alcohol septal ablation is a minimally-invasive procedure in which a few drops of an alcohol-based solution are injected into a small branch of the main artery supplying the thickened heart muscle. This causes part of the muscle to die (in effect, a small heart attack) and in turn reduces the obstruction to blood flow. This procedure is done entirely via a small incision at the top of the leg.
Patients typically go home a few days later.
Not every patient will have an appropriate branch of their main artery which supplies only the thickened heart muscle and does not connect with other arteries.