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Author(s):
Mohamed Abbas
,
Chris Miles
,
Elijah R Behr
Added:
1 year ago
Author(s):
Jorge G Panizo
,
Sergio Barra
,
Greg Mellor
,
et al
Added:
3 years ago
Premature ventricular complexes (PVCs) are the most common ventricular arrhythmia. Their prognostic significance cannot be interpreted without considering the presence or absence of any associated underlying cardiac condition. In the absence of structural heart disease, PVCs were generally considered to be benign.1,2 In the 1970s and 1980s, it was postulated that frequent PVCs could be a trigger…
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Author(s):
Nisha Gilotra
,
David Okada
,
Apurva Sharma
,
et al
Added:
3 years ago
Sarcoidosis is an inflammatory granulomatous disease that can affect any organ. Systemic sarcoidosis is known to affect young adults, with a second peak in women >50 years of age, as demonstrated in Scandinavian and Japanese studies.1–4 In the US, the lifetime risk of sarcoidosis is 2.4% for black people and 0.85% for white people.1 The incidence of cardiac involvement has been increasingly…
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Author(s):
Justine Bhar-Amato
,
William Davies
,
Sharad Agarwal
Added:
3 years ago
Ventricular tachyarrhythmias (VAs) most commonly occur early in ischaemia, and patients presenting with an acute MI and ventricular arrhythmias are a group that has a significantly increased risk of mortality.1,2 Thrombolysis primary percutaneous coronary intervention (PCI) and use of beta-blockers, while resulting in the modification of the natural history of an infarct, have also reduced the…
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Author(s):
Satoshi Higa
,
Li-Wei Lo
,
Shih-Ann Chen
Added:
3 years ago
Catheter ablation of AF has become an established therapy and may have the potential to cure this most commonly encountered sustained arrhythmia. Previous studies have demonstrated that pulmonary veins (PVs) are a major source of the ectopic beats that initiate AF. PV isolation in patients with symptomatic paroxysmal AF refractory to antiarrhythmic drugs is effective; however, it is difficult to…
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Author(s):
Konstantinos C Siontis
,
Hakan Oral
Added:
3 years ago
Advanced catheter-based technologies employed for the ablation of symptomatic atrial fibrillation (AF) have revolutionised the management of this common sustained arrhythmia. In the late 1990s, premature depolarisations originating from the myocardial sleeves within the pulmonary veins were recognised to initiate AF. This landmark discovery rendered pulmonary vein isolation (PVI) as the…
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Author(s):
Eyal Nof
,
William G Stevenson
,
Roy John
Added:
3 years ago
Sustained ventricular tachycardia (VT) and ventricular fibrillation (VF) are typically a manifestation of significant structural heart disease and often associated with a high risk of sudden cardiac death. Implantable cardioverter defibrillators (ICDs) remain the mainstay of therapy for prevention of sudden cardiac death associated with these arrhythmias.1 However, ICDs treat the arrhythmia after…
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Author(s):
Jonathan W Waks
,
Mark E Josephson
Added:
3 years ago
Atrial fibrillation (AF), the most common sustained arrhythmia, is a leading cause of stroke, and is associated with significant morbidity and mortality worldwide. Despite its frequency, clinical importance, and advances in technology and our knowledge of the molecular, ionic and physiological fundamentals of cardiac electrophysiology, our limited understanding of the mechanisms that initiate and…
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Author(s):
Charlotte Brouwer
,
Mark G Hazekamp
,
Katja Zeppenfeld
Added:
3 years ago
The reported incidence of congenital heart disease (CHD) depends on the number of trivial lesions included, such as atrial and ventricular septal defects (ASDs and VSDs). Moderate-to-severe CHD numbers remain stable with 6 per 1,000 live births.1 Survival into adulthood has improved dramatically over the last 25 years and has been driven mainly by a decreased mortality in moderate and severe…
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Author(s):
Nikolaos Fragakis
,
Gabriele Vicedomini
,
Carlo Pappone
Added:
3 years ago
Although atrial fibrillation (AF) is considered the most common arrhythmia in clinical practice, its prevalence is relatively low in the young and middle-aged, ranging from 0.5 % in men below 40 years to 1 % by 60 years.1,2 Regular exercise is proposed as a powerful tool for the primary and secondary prevention of cardiovascular disease, reducing most of the risk factors that predispose to AF,…
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