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).

Long QT 1: The ECG shows broad based T waves. A majority of arrhythmias in this group occur during exercise. Beta-blockers are effective treatment and an ICD is not required unless syncope or ...

mayo.edu Congenital long QT syndrome (LQTS ... Owing to multiple variables interacting at any given time, patients may have different QT intervals during subsequent ECG examinations. The full extent ...

ECG markers and their association with stroke ... CAST trials showed increased sudden death with few antiarrhythmics QT interval prolongation 4–6% 1.5-fold increase Myocardial infarction ...

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 ...

Risk of QT prolongation in congenital long QT syndrome, CHF, electrolyte abnormalities; monitor EKG and correct electrolyte abnormalities if needed. Risk of inj site injury in patients with low ...