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.