Entrepreneur Daniel Neeson, 29, was born with a Bicuspid Aortic Valve (BAV) - “where the aortic valve has two leaflets instead of the normal three”.
And in an Instagram post on Tuesday, he noted having checks every two years before he started to suffer with “severe left ventricle dilation and aortic enlargement”.
He explained: “I’ve always prided myself on pushing through battles and working to control my environment. This was different."