A septal myectomy is a heart surgery that removes a portion of an abnormally thickened heart muscle from the wall (septum) between the heart’s lower chambers. This procedure is primarily used to treat hypertrophic cardiomyopathy (HCM), a condition where the heart muscle becomes abnormally thick.
In obstructive HCM, the thickening of the wall between the heart’s chambers interferes with blood flow into the aorta. Your aorta is the largest artery in your body and serves a vital role, carrying oxygen-rich blood to your organs and tissues.
By removing the excess muscle, the surgery improves blood flow and reduces symptoms like shortness of breath, chest pain and fainting.