Long QT syndrome (LQTS) is a disorder of myocardial repolarization characterized by a prolonged QT interval on the electrocardiogram (ECG) (waveform 1). This syndrome is associated with an increased risk of polymorphic ventricular tachycardia (VT) and a characteristic life-threatening cardiac arrhythmia also known as torsades de pointes (TdP ...

Jul 19, 2024 · Long QT syndrome can cause sudden fainting and seizures. Young people with LQTS syndrome have a higher risk of sudden cardiac death. Treatment for long QT syndrome includes lifestyle changes and medicines to prevent dangerous heartbeats. Sometimes a medical device or surgery is needed.

Long QT syndrome is an issue with the electrical system in your heart taking too long to recharge. This can lead to a life-threatening abnormal heart rhythm.

Dec 22, 2023 · 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.

Long QT syndrome (LQTS) is a condition affecting repolarization (relaxing) of the heart after a heartbeat, giving rise to an abnormally lengthy QT interval. [7] It results in an increased risk of an irregular heartbeat which can result in fainting, drowning, seizures, or sudden death. [1] These episodes can be triggered by exercise or stress. [6]

Dec 26, 2022 · QTc is prolonged if it is greater than 440 ms in men or greater than 460 ms in women. A QTc greater than 500 is associated with an increased risk of torsade de pointes.

This review discusses the components of accurate QTc measurement and diagnosis, re-examines what is known about factors affecting QT interval measurement, and clarifies current recommendations regarding diagnosis of so-called “borderline” QT interval prolongation.

Long QT syndrome (LQTS) is an abnormal feature of the heart’s electrical system that can lead to a potentially life-threatening arrhythmia called torsades de pointes (pronounced torsad de pwant). Torsades de pointes may result in syncope (fainting) or …

Nov 27, 2023 · Long QT syndrome is a medical condition that causes abnormal electrical conduction in the heart. When graphed on an electrocardiogram (EKG or ECG) each heartbeat has five distinct waves: P, Q, R, S, and T. Long QT refers to a …

Long QT syndrome is a heart condition that affects the heart’s electrical system and can lead to sudden cardiac arrest. Treatment options vary based on severity and may include medication, implanted devices, or surgery to help regulate heart rhythm and reduce complications.