The new technology could be a "game-changer" resulting in patients being treated sooner, experts say.

The technology would be a ‘real game changer’, researchers have said

Upgraded medical tool can diagnose heart failure, heart valve disease and abnormal heart rhythms

The new stethoscope, tested on over 12,000 patients across the country, can detect heart problems in just 15 seconds

The new technology could be a "game-changer" resulting in patients being treated sooner, experts say.