…located anywhere in the atria. In most cases, the premature atrial impulse is conducted to the ventricles, which results in ventricular depolarization and the appearance…

…entry circuit involves the atria, atrioventricular node, accessory pathway and the ventricles. In most cases, the re entry is induced by a premature atrial beat…

…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…

…entry is induced by a premature atrial beat reaching the atrioventricular node while some fibers are still refractory. If an atrial impulse reaches the atrioventricular…

…because the ectopic impulse originates in the ventricles and does not influence the atria (with exceptions discussed below). Although premature ventricular contractions are mostly harmless…

…excitation (the ventricles are excited prematurely; refer to Figure 4, third panel). As illustrated in Figure 4 the initial depolarization of the ventricles is slow…

CPR ECG 1 . The initial rhythm is atrial fibrillation. The fifth beat is a ventricular premature beat. A ventricular tachycardia (VT) emerges. As evident, ventricular…

…disability and premature mortality. Cardiovascular conditions associated with obesity include hypertension, dyslipidaemia, coronary artery disease (CAD), atherosclerosis, heart failure (HF), atrial fibrillation and cardiovascular events…

…diminished impulse conduction . Explanation follows: Increased automaticity occurs both in the atria and the ventricles. This initially manifests with premature beats (premature atrial beats or

…bradycardia The following conditions may cause intermittent bradycardia: Extrasystoles (premature ventricular beats or premature atrial supraventricular beats) can cause transient AV blocks by affecting the…