Australians are very good at making their mark on the world, and Dr Nikki Bart is another Aussie who has gone above and beyond. 

Nikki is a heart failure and heart transplant cardiologist who also holds a number of world records for mountaineering. 

In fact, she and her mother Cheryl were the first mother-daughter team to summit Mount Everest and complete the Seven Summits. 

Nikki joined John Stanley to discuss her work as a heart specialist and discuss her experience mountaineering.