QT peak prolongation is not associated with left ventricular hypertrophy in teenage professional football players.

Objective: QT peak prolongation is associated with left ventricular hypertrophy (LVH) in patients with hypertension. This study tests the hypothesis that QT peak prolongation correlates with LV mass index in apparently healthy young football players.

Methods: QT peak and other ECG criteria for LVH were assessed in 117 male professional footballers (mean age 16.

Atrial fibrillation 1: classification and clinical implications.

Atrial fibrillation is a common arrhythmia that has significant clinical implications. It increases the risk of stroke and mortality. Various cardiac and extra-cardiac pathologies can lead to the development of atrial fibrillation.