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Author(s): Demosthenes G Katritsis , Hein J Wellens , Mark E Josephson Added: 3 years ago
In 1941, Mahaim and Winston described the histology of anomalous connections that arise from the AV node and insert into the right ventricle.1 This was the first description of nodoventricular or so-called Mahaim accessory pathways. Accessory pathways with decremental conduction properties that connected the atrium to the right bundle branch (RBB) were subsequently mapped mainly at the lateral… View more

Electrophysiology & Arrhythmia
Septal and Conduction System Pacing
Author(s): Demosthenes G Katritsis , Hugh Calkins Added: 6 months ago

Electrophysiology & Arrhythmia
LBBAP in Heart Failure
Author(s): Juan Carlos Diaz , Mauricio Duque , Julian Aristizabal , et al Added: 4 months ago

Electrophysiology & Arrhythmia
Roderick Tung
Research Area(s) / Expertise: Job title: Associate Professor of Medicine Director, Cardiac Electrophysiology
Dr Roderick Tung is a widely renowned cardiologist and specialist in cardiac electrophysiology with over 20 years of experience in medicine. His passion for cardiology grew from undergoing an ablation procedure to correct a cardiac arrhythmia in his early 20s. Dr Tung is affiliated with The University Of Chicago Medical Center and has authored over 200 peer-reviewed articles and… View more
Gaurav A Upadhyay
Research Area(s) / Expertise: Job title: Associate Professor
Personal History Dr. Gaurav A. Upadhyay is a cardiologist based in Chicago, Illinois and is affiliated with University of Chicago Medical Center. Academic History Dr. Upadhyay graduated from Harvard University in 2000 with a BA in Biology/Neurobiology. He went on to earn his MD from the University of Chicago in 2006 and then complete a residency in internal medicine and two… View more
Cardiac Resynchronisation with Conduction System Pacing
Author(s): Fatima M Ezzeddine , Isaac G Leon , Yong-Mei Cha Added: 8 months ago

Electrophysiology & Arrhythmia
Clinical Utility of Body Surface Potential Mapping in CRT Patients
Author(s): Ksenia Sedova , Kirill Repin , Gleb Donin , et al Added: 2 years ago

Imaging & Diagnostics

Heart Failure
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: 2 years ago

Electrophysiology & Arrhythmia
His–Purkinje Conduction System Pacing: State of the Art in 2020
Author(s): Ahran D Arnold , Zachary I Whinnett , Pugazhendhi Vijayaraman Added: 3 years ago
Right ventricular apical pacing (RVAP) results in dyssynchronous ventricular activation that can lead to impairment of ventricular function. Alternative myocardial pacing sites such as RV septal pacing (RVSP) and RV outflow tract pacing still rely on myocardial cell-to-cell conduction and have not been shown to prevent pacing-induced cardiomyopathy.1 Biventricular pacing (BVP) certainly improves… View more

Electrophysiology & Arrhythmia