2023年1月31日 · Atrial fibrillation (AF) occurs in 20% of patients with Wolff-Parkinson-White (WPW) pattern, and atrial flutter in 7%; The presence of an accessory pathway (AP) allows for rapid conduction directly to the ventricles, bypassing the AV node

2014年5月5日 · AFib With Pre-Excitation. May 05, 2014 | Saurabh Aggarwal, MD; ; ; Atul Bhatia, MD. Print; Font Size A A A. Figure 1: A 41-year-old male presented to the emergency department with palpitations. The heart rate was 255 beats/min and the blood pressure was 113/69. Synchronized cardioversion (100, 150 and 200 Joules) was attempted but was unsuccessful.

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.

12-lead ECG showing atrial fibrillation in a patient with antegrade conduction through both the AV node and an accessory pathway. The occasional narrow QRS complexes reflect conduction through the AV node, while the wide QRS complexes, with instantaneous rates close to 300 beats per minute, are due to antegrade conduction via an accessory pathway (probably postero-septal based on the QRS ...

This case serves as an important reminder that atrial fibrillation (AF) in the presence of an accessory pathway may present with confounding ECG features, potentially leading to incorrect diagnoses and treatments that may be life threatening. ... Preexcited AF is thus characterized as a malignant arrhythmia, as sudden cardiac death may result ...

2023年3月6日 · Prompt recognition of preexcited atrial fibrillation and proper management is a must for survival. SPERRI in AF ≤ 250 ms is considered high-risk feature. This case is unique in that the accessory pathway was likely oblique and extended from the MCV to the right posterior sepal region outside of the coronary sinus.

INTRODUCTION. The presence of a short PR interval, frequently with a delta wave, defines the preexcitation syndrome. While no clear arrhythmia is associated with Lown-Ganong-Levine syndrome, patients with Wolff-Parkinson-White syndrome may have atrioventricular (AV) reentrant tachycardia or atrial fibrillation/flutter.

For adult patients with WPW, high-risk is defined as the SPERRI during atrial fibrillation ≤250 ms, the presence of multiple accessory pathways, an accessory pathway refractory period ≤240 ms, or atrioventricular reentrant tachycardia precipitating pre-excited atrial fibrillation. 4,5 For children, catheter ablation is recommended for those ...

2024年4月5日 · A 32-year-old male patient presented to the emergency room with atrial fibrillation (AF) and evidence of preexcitation on 12-lead ... and a short preexcited R-R interval of <250 ms during AF—all characteristics that our patient demonstrated. 7 Recognition of these risk factors is important in identifying high-risk patients for whom ...

An example of preexcited atrial fibrillation is seen in Fig. 2. Fig. 1. Open in a new tab. Left- Schematic of the typical cardiac conduction system in the absence of an extra-nodal atrio-ventricular accessory pathway. On the right is a schematic of the cardiac conduction system in the presence of an extra-nodal accessory atrio-ventricular ...