2024年10月8日 · This page covers the pathophysiology and ECG features of pre-excitation syndromes in sinus rhythm. The two main forms of tachyarrhythmias that occur due to accessory pathways are discussed separately — see atrioventricular re-entry tachycardia (AVRT) and atrial fibrillation/flutter in pre-excitation.

2010年10月12日 · Wolff-Parkinson-White syndrome (WPW) is the combination of accessory pathway activation seen on an ECG (delta waves) and episodes of tachycardia. It was first described in 1930 by Louis Wolff, Sir John Parkinson, and Paul Dudley White.

In cardiology, an accessory pathway is an additional electrical connection between two parts of the heart. [1] These pathways can lead to abnormal heart rhythms (arrhythmias) associated with symptoms of palpitations.

2008年9月17日 · The QRS complex morphology present on the 12-lead electrocardiogram (ECG) in WPW patients depends on the location of the accessory pathway(s) (AP) and the degree of fusion over the normal atrioventricular (AV) conduction.

form of paroxysmal supraventricular tachycardia that occurs in patients with accessory pathways, usually due to formation of a re-entry circuit between the AV node and accessory pathway. ECG features depend on the direction of conduction, which can be orthodromic or antidromic.

2022年12月12日 · Accessory pathway (AP) ablation is a standard procedure for the treatment of Wolff-Parkinson-White syndrome (WPW). Twelve-lead electrocardiogram (ECG)-based delta wave analysis is essential for predicting ablation sites. Previous algorithms have shown to be complex, time-consuming, and unprecise.

We developed and validated an artificial intelligence-based algorithm (location of accessory pathway artificial intelligence (locAP AI)) using a neural network to identify the AP location in WPW syndrome patients based on the delta-wave polarity in the 12-lead ECG.

Accessory pathways can be located anywhere along the left or right free walls of the heart or within the septum. We discuss the localization of accessory atrioventricular con-nections (AAVCs). In the setting of an AAVC, the ventricles are activated earlier than one would normally expect from the conventional AV conduction system.

2024年2月27日 · Distinguishing between a bystander accessory pathway and a participating accessory pathway presents a diagnostic challenge in electrophysiology studies for SVT, especially when AVNRT and ORT coexist.

An accessory pathway, along with the normal pathway through the AV node, can form a functional circuit, allowing conduction to proceed down one pathway and return up the other, in a rapidly repeating circular motion. This causes paroxysmal supraventricular tachycardia.