Torsades de
Pointes
un
seel
.com · long QT · EAD trigger · twisting VT · magnesium
QTc
420
ms
rhythm
sinus
risk
low
state
—
Normal repolarization (I-K-r current)
Prolonged QT · L-type calcium reopens
EAD trigger & twisting polymorphic VT
IV magnesium · repolarization restored
▶ Play
←
→
🔇 Unmute
Reset
Un
seel
.com · Torsades de Pointes: How a Long QT Twists Into Cardiac Arrest