Results 21 to 30 of about 376,033 (269)

Atrial Myopathy Underlying Atrial Fibrillation

open access: yesArrhythmia & Electrophysiology Review, 2020
While AF most often occurs in the setting of atrial disease, current assessment and treatment of patients with AF does not focus on the extent of the atrial myopathy that serves as the substrate for this arrhythmia. Atrial myopathy, in particular atrial fibrosis, may initiate a vicious cycle in which atrial myopathy leads to AF, which in turn leads to ...
Harold Rivner   +2 more
openaire   +3 more sources

Picking the Locked Door

open access: yesJACC: Case Reports, 2023
The management of atrial septal defects (ASDs) has been revolutionized by the advent of percutaneous transvenous occlusion devices. This case series describes techniques required to perform a transeptal puncture safely and effectively in patients ...
Noel Fitzpatrick, MB, MSc   +4 more
doaj   +1 more source

Optimising Large Animal Models of Sustained Atrial Fibrillation: Relevance of the Critical Mass Hypothesis

open access: yesFrontiers in Physiology, 2021
BackgroundLarge animal models play an important role in our understanding of the pathophysiology of atrial fibrillation (AF). Our aim was to determine whether prospectively collected baseline variables could predict the development of sustained AF in ...
Nathan C. Denham   +5 more
doaj   +1 more source

Glycemic control is associated with atrial structural remodeling in patients with type 2 diabetes

open access: yesBMC Cardiovascular Disorders, 2019
Background Diabetes mellitus (DM) has been demonstrated to be a strong risk factor for development and perpetuation of atrial fibrillation (AF). However, how DM and glycemic control affect the pathogenesis of AF has not been sufficiently investigated ...
Qing Wang   +11 more
doaj   +1 more source

Mid cristal atrial tachycardia and ivabradine: A Case Report

open access: yesHeart and Mind, 2021
We present an extreme rare case of cristal atrial tachycardia (AT) in a 23-year-old male presenting with recurrent refractory palpitation since last 1 year treated with betablocker metoprolol 50 mg twice daily.
Debasish Das   +3 more
doaj   +1 more source

Long-term results of ablation index guided atrial fibrillation ablation: insights after 5+ years of follow-up from the MPH AF Ablation Registry

open access: yesFrontiers in Cardiovascular Medicine
BackgroundCatheter ablation (CA) for symptomatic atrial fibrillation (AF) offers the best outcomes for patients. Despite the benefits of CA, a significant proportion of patients suffer a recurrence; hence, there is scope to potentially improve outcomes ...
N. Fitzpatrick   +14 more
doaj   +1 more source

An Unusual Presentation of Right Atrial Myxoma: A Case Report

open access: yesOman Medical Journal, 2023
A right atrial myxoma extending to the inferior vena cava with associated right-to-left shunting leading to systemic desaturation is an exceedingly rare clinical entity. The number of cases reported in the literature to date is not more than five.
Debmalya Saha   +5 more
doaj   +1 more source

Atrial GIRK Channels Mediate the Effects of Vagus Nerve Stimulation on Heart Rate Dynamics and Arrhythmogenesis

open access: yesFrontiers in Physiology, 2018
Diminished parasympathetic influence is central to the pathogenesis of cardiovascular diseases, including heart failure and hypertension. Stimulation of the vagus nerve has shown promise in treating cardiovascular disease, prompting renewed interest in ...
Steven W. Lee   +5 more
doaj   +1 more source

Atrial fibrosis and the mechanisms of atrial fibrillation [PDF]

open access: yesHeart Rhythm, 2007
Atrial fibrillation (AF) is commonly associated with congestive heart failure (CHF), and CHF has been shown to be associated with atrial structural remodeling resulting in fibrosis. Atrial interstitial fibrosis has been seen in patients with CHF and in animal models of pacing-induced heart failure.
Thomas H, Everett, Jeffrey E, Olgin
openaire   +2 more sources

The safety of direct transeptal puncture using a radiofrequency guidewire combined with a 17Fr pulsed field ablation sheath

open access: yesScientific Reports
Transseptal puncture (TSP) is widely used in catheter-based cardiac interventions to gain left atrial (LA) access, but its workflow has remained largely unchanged and is still a source of serious complications.
Gael Jauvert   +11 more
doaj   +1 more source

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