Health24.com | Fainting was a clue to 24-year-old's fatal heart condition

'Long QT syndrome' is a rare condition. It's marked by the lower chambers of the heart taking too long to contract and release.

from Health24 News https://www.health24.com/Medical/Heart/News/fainting-was-a-clue-to-24-year-olds-fatal-heart-condition-20191111-2