An aortic valve in heart who has two flaps (cusps) that available and near. A normal aortic device inside heart has three flaps. There could be no the signs of bicuspid aortic device in childhood, in time the device may become narrowed, making it harder for bloodstream to pass through it, or bloodstream may turn to drip backwards through the valve (regurgitate). Treatment hinges on how the valve is working. For a severely deteriorated valve, replacement surgery could be required.