A prolonged QT interval has a variety of causes and can be a very serious ECG finding, as it may lead to the potentially fatal arrhythmia polymorphic ventricular tachycardia (Torsades de Pointes).

However, the 12-lead ECG remains the universal initial diagnostic test in ... from participating in competitive sports if they were symptomatic, had a prolonged QT interval (over 440–470 ms in men, ...

Lower heart rates also result in a longer QT interval. A quick way to distinguish a prolonged QT interval is to examine if the T wave ends beyond the halfway point between the RR interval.

Long QT syndrome (LQTS) is an inherited genetic disorder associated with QT prolongation on the electrocardiogram ... In adulthood, an increased QTc interval remains a significant independent ...

In patients with symptoms such as irregular heartbeats, dizziness, or fainting, or in individuals that physicians suspect may ...

left axis deviation and conduction delays and findings suggestive or diagnostic of primary electrical diseases such as long QT syndrome and Wolff-Parkinson-White syndrome. The evaluation of abnormal ...

Long QT syndrome (LQTS) is potentially lethal if left untreated. Accurate diagnosis is, therefore, vital. Patients with LQTS have impaired adaptation of the QT interval in response to changes in ...

Several other ECG markers such as AT, premature atrial/ventricular complexes and prolonged QT have been ... sudden death with few antiarrhythmics QT interval prolongation 4–6% 1.5-fold increase ...

Children’s Healthcare of Atlanta’s heart clinics treat about 200 children a year. This includes Audrey Koch, a Roswell teen with a heart condition called Long QT syndrome.

The ‘QT-interval’ is the time it takes for the heart ... The more warm colours you can see, the greater the risk of long QT syndrome.Long QT syndrome often doesn’t cause symptoms, so an ECG is the ...