Heart racing suddenly during workouts or daily activity? Doctors explain supraventricular tachycardia (SVT), its symptoms, causes, and when to seek help.

If your heart suddenly shoots up to 150–170 bpm during exercise or even at rest, doctors say it could be supraventricular ...

DENVER — Heart disease in young people is certainly possible. Supraventricular tachycardia (SVT) can affect kids, adolescents and young adults. It occurs in about 2 out of every 1,000 people. SVT ...