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Analysis of junctional beats during slow pathway ablation: Illuminating the mechanism of typical and atypical AV nodal re-entrant tachycardia.
Heart Rhythm O2
December 2024
Department of Cardiovascular Medicine, Kyorin University School of Medicine, Mitaka, Japan.
Background: Junctional rhythm (JR) frequently occurs during radiofrequency (RF) ablation procedures targeting the slow pathway (SP) for atrioventricular nodal re-entrant tachycardia (AVNRT), signaling successful ablation. Two types of JR have been noticed: typical JR as His activation preceding atrial activation, and atypical JR as atrial activation preceding the His activation. Nevertheless, the origin and characteristics of JR remain incompletely defined.
View Article and Find Full Text PDFWenckebach-periodic VA prolongation and abrupt shortening of HH interval during tachycardia indicate (i) a retrograde block at the upper common pathway that manifested a retrograde atrial activation via the superior slow pathway, and (ii) an antegrade return of a retrograde atrial activation to His bundle via the fast pathway.
View Article and Find Full Text PDFA computational study on the influence of antegrade accessory pathway location on the 12-lead electrocardiogram in Wolff-Parkinson-White syndrome.
Europace
September 2024
Division of Biophysics and Medical Physics, Gottfried Schatz Research Center, Medical University of Graz, Graz, Austria.
Article Synopsis
- * Current methods using a standard 12-lead ECG often fail to pinpoint the exact locations of these accessory pathways (APs), leading to challenges in successful treatment outcomes.
- * The study employs a virtual cardiac model to analyze the relationship between AP location and ECG signals, providing insights into the limitations of current diagnostic methods and suggesting that these models can improve ECG accuracy and personalized treatment approaches.
What an anesthesiologist should know about pediatric arrhythmias.
Paediatr Anaesth
December 2024
Department of Anesthesiology, Division of Pediatric Cardiac Anesthesiology, Vanderbilt University Medical Center, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tennessee, USA.
Article Synopsis
- Identifying and treating pediatric arrhythmias is crucial for anesthesiologists, as these conditions can often emerge during anesthesia without prior ECG data, with supraventricular tachycardia being the most prevalent type.
- * Patients with inherited heart conditions, such as channelopathies or cardiomyopathies, are more vulnerable to arrhythmias, which can be triggered by events like intubation or surgery.
- * Treatment options include intravenous antiarrhythmics, as common Valsalva maneuvers are often ineffective, and there are significant risks associated with conditions like Wolff-Parkinson-White syndrome that can lead to life-threatening arrhythmias.*
High-density visualization of antegrade fast pathway activation during atypical fast/slow atrioventricular nodal reentrant tachycardia in two cases.
J Interv Card Electrophysiol
November 2024
Arrhythmia Advanced Therapy Center, AOI Universal Hospital, Kawasaki, Japan.
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