What does a long QT interval mean?
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Zoe Martin
Studied at the University of Oxford, Lives in Oxford, UK.
As a medical professional with expertise in cardiology, I can explain the significance of a long QT interval. The QT interval on an electrocardiogram (ECG) represents the time between the start of the Q wave and the end of the T wave, which corresponds to the duration of both the depolarization and repolarization of the ventricles—essentially, the time it takes for the heart's lower chambers to contract and then relax. A long QT interval is when this duration is longer than normal, and it can be a sign of an abnormality in the heart's electrical activity.
Works at the International Fund for Agricultural Development, Lives in Rome, Italy.
Long QT syndrome is a heart rhythm disorder that can cause serious irregular heart rhythms (arrhythmias). ... In long QT syndrome, your heart muscle takes longer than normal to recharge between beats. This electrical disturbance, which often can be seen on an electrocardiogram (ECG), is called a prolonged QT interval.
2017-11-18
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Harper Martinez
QuesHub.com delivers expert answers and knowledge to you.
Long QT syndrome is a heart rhythm disorder that can cause serious irregular heart rhythms (arrhythmias). ... In long QT syndrome, your heart muscle takes longer than normal to recharge between beats. This electrical disturbance, which often can be seen on an electrocardiogram (ECG), is called a prolonged QT interval.
