Up to 300,000 people in Britain are unaware they may have potentially deadly heart condition

Left untreated, aortic stenosis may cause potentially fatal heart failure – where the heart, unable to pump blood efficiently, wears out from the strain of keeping the circulation going.Left untreated, aortic stenosis may cause potentially fatal heart failure – where the heart, unable to pump blood efficiently, wears out from the strain of keeping the circulation going.Read MoreHealth News | Mail Online