When Jane Armstrong fell off her horse during a barrel race last year, she didn't think much of it.
When she went to the doctor, though, they discovered something wrong. A tumor the size of her thumb had grown on the inside of her heart.
While she waited for open heart surgery, Jane wore a LifeVest, a wearable defibrillator.
In the middle of the night in January, Jane woke up not feeling well. The LifeVest detected her heart beating over 200 times a minute and administered a shock. Doctors say it saved her life.
Hear how Jane's life changed that night Monday on News 3 at Ten.