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. 

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

See omnystudio.com/listener for privacy information.