…bundle of His). Abnormal depolarization will consequently lead to abnormal repolarization. This explains the secondary ST T changes seen on premature ventricular complexes; the ST…

…most cases, the premature atrial impulse is conducted to the ventricles, which results in ventricular depolarization and the appearance of a QRS complex. Because the…

…These situations are as follows: Premature ventricular depolarization: As exemplified in Figure 1, if the atrial impulse reaches the ventricular His Purkinje system too early…

…voltage. Patients with ARVC display frequent premature ventricular contractions (PVC), which may advance to monomorphic ventricular tachycardia (VT). Ventricular tachycardia in ARVC has LBBB morphology…

…figure is 500 ms. The QT interval represents the time between the onset of ventricular depolarization and the end of ventricular repolarization. It reflects the…

…and anxiety. As the tachyarrhythmia originates above the ventricles, ventricular depolarization proceeds normally via the His Purkinje system, and in most cases, there is no…

…interval is <0.12 seconds. Delta wave : depolarization of ventricular myocardium will start where the accessory pathway inserts into the ventricle, and the impulse will…

…actually a J wave. The term “early repolarization” was used to describe what appeared to be a premature repolarization on the ECG. As seen in…

…of the QRS complex. It reflects the time interval from start of atrial activation (depolarization) to start of ventricular activation (depolarization). The PR interval reflects…

…The fifth beat is a ventricular premature beat. A ventricular tachycardia (VT) emerges. As evident, ventricular tachycardia may appear more polymorphic in one lead (the…