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Reentrant Arrhythmias of the His-Purkinje System
Author(s): Raphael K Sung , Penelope A Boyden , Satoshi Higuchi , et al Added: 2 years ago

Electrophysiology & Arrhythmia
Author(s): Demosthenes G Katritsis Added: 3 years ago
Since its first description by Hays in England in 1906, second-degree atrioventricular (AV) block has been a fascinating clinical entity, mainly due to obscure points regarding its diagnosis that emanate from misconceptions and errors regarding its proper definition.1–3 The practicing clinician should be aware of the following points that may assist a proper diagnosis and, consequently, accurate… View more

Electrophysiology & Arrhythmia
Research Area(s) / Expertise: Job title: Head of the EP Lab and Professor
Personal History Prof Marek Jastrzębski is a heart rhythm specialist, professor and head of the EP Laboratory at Jagiellonian University in Kraków, Poland. He was the first electrophysiologist in Poland.1, 4 In his spare time, Prof Jastrzębski enjoys classic photography, snowboarding and beekeeping.1 Academic History In 1995, Prof Jastrzębski graduated from Jagiellonian University… View more
Author(s): Mark E Josephson Added: 3 years ago
In patients with syncope or episodes of palpitations and heart disease, an electrophysiology study (EPS) may be of value by means of potential induction of sustained ventricular tachyarrhythmias.1,2 Programmed ventricular stimulation may be useful in the context of risk stratification of ischaemic patients with left ventricular ejection fraction (LVEF) 30–40 %, and there has been some evidence… View more

Electrophysiology & Arrhythmia
Author(s): Nadine Ali , Daniel Keene , Ahran D Arnold , et al Added: 3 years ago
His bundle pacing in humans was first described in 1970 by Narula et al.1 They demonstrated that it was possible to stimulate the His bundle to produce normal physiological ventricular activation via the His-Purkinje system. However, the first report of permanent His bundle pacing, by Deshmukh et al., did not occur until 2000.2 In that study, His pacing was performed in a series of patients with… View more

Heart Failure

Electrophysiology & Arrhythmia
Physiology and Practicality of Left Ventricular Septal Pacing
Author(s): Luuk Heckman , Justin Luermans , Floor Salden , et al Added: 2 years ago

Electrophysiology & Arrhythmia
Differential Diagnosis of Wide QRS Tachycardias
Author(s): Demosthenes G Katritsis , Josep Brugada Added: 3 years ago
The term narrow QRS tachycardia indicates individuals with a QRS duration ≤120 ms, while wide QRS tachycardia refers to tachycardia with a QRS duration >120 ms.1 Narrow QRS complexes are due to rapid activation of the ventricles via the His–Purkinje system, suggesting that the origin of the arrhythmia is above or within the His bundle. However, early activation of the His bundle can also occur… View more

Electrophysiology & Arrhythmia
Author(s): Sanjiv M Narayan , Hugh Calkins , Andrew Grace , et al Added: 3 years ago

Electrophysiology & Arrhythmia
Idiopathic Left Ventricular Tachycardia
Author(s): Hongwu Chen , Kit Chan , Sunny S Po , et al Added: 3 years ago
Ventricular tachycardia (VT) originating from the Purkinje system is the most common type of idiopathic left ventricular tachycardia (ILVT), especially among young Asians.1,2 It usually has a benign course. Research over the past two decades has deepened our understanding of the anatomy of the Purkinje system and the mechanisms of ILVT. This review focuses on the research history and anatomy of… View more

Electrophysiology & Arrhythmia
Wide Complex Tachycardia - Ventricular Tachycardia or Not Ventricular Tachycardia, That Remains the Question
Author(s): John B Garner , John M Miller Added: 3 years ago
A wide complex tachycardia (WCT) is simple enough to define: a cardiac rhythm with a rate >100 beats per minute and a QRS width >120 milliseconds (ms). Unfortunately, beyond this simple definition lies a complex differential diagnosis with prognoses ranging from utterly benign to potentially lethal, requiring treatment strategies ranging from medications to emergent non-sedated… View more

Electrophysiology & Arrhythmia