1a). The electrical events during the action potential, including initial firing (depolarization, corresponding to the QRS complex in the ECG) and subsequent return to the resting state ...

initiate the action potential, allowing cells to act as pacemakers. This mechanism, referred to as automaticity, is of major relevance in the sinoatrial node. Torsades de pointes (TdP) arrhythmia ...

Performing 12-lead electrocardiography (ECG) in addition to US standard cardiovascular screening in young athletes improves detection of cardiac abnormalities; furthermore, ECG use may be a cost ...