Watch: Is this the future of replacement heart valves? A BHF-funded chemical engineer is perfecting a material to tackle heart valve disease. This short animation explains how this new discovery could transform replacement valves in the future. Read the full article about Dr Geoff Moggridge's heart valve discovery See Catherine Mackay's diary and illustrations of heart valve surgery, to let others know what to expect. Watch our animation explaining the difference between a heart attack and a cardiac arrest.