…Figure 1. Components of the ventricular conduction system and the temporal association between the ECG and impulse transmission through the heart. An intraventricular conduction delay…

…Disease Study,1 which enrolled 10,899 participants with baseline ECG examinations. Individuals with nonspecific intraventricular conduction delays were at particularly high risk of death…

…blood supply of the conduction system Figure 1 presents the components of the conduction system and the arterial blood supply. The first third of the…

…of acute coronary syndromes, particularly ST elevation myocardial infarction (STEMI), ischemic injury can disrupt the conduction system at any level, producing atrioventricular (AV) or intraventricular…

…Figure 1 ). The interval from the premature beat to the next sinus beat will be longer than one normal sinus interval. The P wave of…

…provided that intraventricular conduction is normal). If the P wave is visible, it is retrograde in lead II (because of the reversed direction of atrial…

…atrial fibrillation) if the block in the AV node is high grade. Causes of tachyarrhythmia with narrow QRS complexes (QRS duration < 0.12 s…

…high suspicion of intermittent infrahisian block should be maintained, particularly in older patients and those exhibiting a bundle branch block (BBB) or an intraventricular conduction…

ECG Hypertrophy and dilatation Principles of atrial and ventricular enlargement (hypertrophy and dilatation) Cardiac chamber enlargement refers to abnormally large atria or abnormally large ventricles…

…one being refractory and the other capable of conducting the impulse, re entry may arise. This is illustrated in Figure 1 (study this figure carefully)…