Warning: This video contains images of open-heart surgery.
Gentle shockwaves could regenerate the heart tissue of patients after bypass surgery, according to new research.
A study of 63 people in Austria found those given the new treatment could walk further – and their hearts could pump more blood.
Larger trials of the device, dubbed a "space hairdryer" by researchers, are now planned to try to replicate the results in a wider group of patients.
Subscribe here: http://bit.ly/1rbfUog
For more news, analysis and features visit: www.bbc.com/news
#BBCNews
