WATCH: How defibrillators are helping to save lives in north BelfastThe auxiliary nurse has been on a crusade to help reduce the number of cardiac arrest fatalities in her local area. Defibrillators helping to save lives in north BelfastWorking in the health service, Fiona McCarthy knows just how important defibrillators are in her local area. ‌North Belfast has one of the highest rates of coronary heart disease and heart attacks in Northern Ireland. ‌"As an auxiliary nurse at the Royal Victoria Hospital, I know defibrillators save lives and how much they're needed. View 3 Images Fiona McCarthy has been organising and introducing the need for defibrillators at strategic points throughout North Belfast (Image: Justin Kernoghan/Belfast Live)Fiona added: "We're up to five defibrillators now in North Belfast and they have saved quite a few lives.