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Tilt-testing for syncope: when to refer and when it can make a difference
Author(s): P Boon Lim , Afzal Sohaib Start date: Jan 16, 2020

Electrophysiology & Arrhythmia
Author(s): Richard Sutton Added: 3 years ago
Syncope in a patient with a pacemaker commands urgent action to ascertain its cause and provide appropriate treatment. This is a well accepted statement but the field has evolved in recent years and, strangely, has received little attention. Many considerations bear on this issue. First, syncope in pacemaker patients is not common but may be more so than generally considered. The lack of… View more

Electrophysiology & Arrhythmia
Cardiac Pacing in Reflex Syncope
Author(s): Marco Tomaino , Vincenzo Russo , Daniele Giacopelli , et al Added: 2 years ago

Electrophysiology & Arrhythmia
Adenosine Test in Syncope of Unknown Origin
Author(s): Melani Sotiriadou , Antonios P Antoniadis , Nikolaos Fragakis , et al Added: 2 years ago

Electrophysiology & Arrhythmia
Author(s): Rakesh Gopinathannair , Benjamin C Salgado , Brian Olshansky Added: 3 years ago
Heart rate and blood pressure are tightly regulated by autonomic control to effect adequate blood flow as needed. This regulatory process breaks down when the vasovagal reflex is activated. Profound, but brief, circulatory collapse manifests as bradycardia (cardioinhibitory response) and/or hypotension (vasodepressor response) and/or altered cerebral autoregulation, resulting in transient loss of… View more

Electrophysiology & Arrhythmia
Author(s): Satish Raj , Robert Sheldon Added: 3 years ago
Syncope and palpitations are two common clinical presentations, and both pose difficulties in the approach to their management. They are both symptoms of a number of syndromes, and an efficient approach with targeted therapy is challenging. Cardiac arrhythmia specialists, who lack a compact and accessible guide to management, see many patients with these symptoms in consultation. Recognising this… View more

Standards & Guidelines

Electrophysiology & Arrhythmia
Cardioneuroablation for Vasovagal Syncope
Author(s): Le Li , Sunny Po , Yan Yao Added: 10 months ago

Electrophysiology & Arrhythmia

Prevention & Chronic Conditions
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
Unmasking Adenosine: The Purinergic Signalling Molecule Critical to Arrhythmia Pathophysiology and Management
Author(s): Gareth DK Matthews , Andrew Grace Added: 3 years ago
The use of adenosine in cardiology is ubiquitous. From arrhythmia to coronary intervention to cardiac imaging, adenosine is an essential part of everyday practice because of its widespread effects on electrophysiology and the coronary vasculature. Electrophysiologists will be most familiar with adenosine for its use in terminating supraventricular tachycardias (SVTs) that are dependent on the… View more

Heart Failure

Electrophysiology & Arrhythmia
Defibrillation Threshold Testing: Current Status
Author(s): Justin Hayase , Duc H Do , Noel G Boyle Added: 3 years ago
The ICD is an important therapy for both primary and secondary prevention of sudden cardiac death in selected patients. The role for defibrillation threshold (DFT) testing either intraoperatively or postoperatively has changed significantly over the past few decades, and it is no longer routinely recommended in patients undergoing left-sided transvenous ICD implantation.1–7 The definition of the… View more

Electrophysiology & Arrhythmia