QT prolongation occurs when the heart muscle takes longer to contract and relax than usual. It can affect heart rhythms and lead to sudden cardiac arrest. The heart is a muscle that contracts and ...

Long QT interval is a condition that affects the heart’s electrical rhythm, which can lead to potentially life threatening arrhythmia. Behind the pumping action of the heart is an electrical ...

The QT interval on the surface electrocardiogram spans ventricular depolarisation to repolarisation, and its prolongation signifies delayed recovery of ventricular excitability. Both congenital and ...

As more consumer-facing devices add features to measure the heart’s electrical activity, companies are looking for new ways to turn this data into valuable health information. AliveCor, a startup that ...

The QT interval is the time from the beginning of the QRS complex (ventricular depolarization) to the end of the T wave (ventricular repolarization). The normal QT interval is controversial and ...

Five factors underlie the ongoing overdiagnosis and misdiagnosis of long QT syndrome (LQTS), including temporary QT prolongation following vasovagal syncope, a "pseudo"-positive genetic test result, ...

ROCHESTER, MN — A significant number of patients given implantable cardioverter defibrillators (ICDs) for long-QT syndrome (LQTS) receive them for reasons outside of current guidelines, and many ...

Please provide your email address to receive an email when new articles are posted on . More than 13% of users of quetiapine and haloperidol developed severe QT prolongation. Severe QT prolongation ...