Results 11 to 20 of about 722,373 (248)

Altered excitation-contraction coupling in human chronic atrial fibrillation [PDF]

, 2012
This review focuses on the (mal)adaptive processes in atrial excitation-contraction coupling occurring in patients with chronic atrial fibrillation. Cellular remodeling includes shortening of the atrial action potential duration and effective refractory ...
Grandi, E., Pandit, S.V., Workman, A.J.
core   +7 more sources

Relationship between left atrial appendage peak flow velocity and nonvalvular atrial fibrillation recurrence after cryoablation

Frontiers in Cardiovascular Medicine, 2023
BackgroundPrevious studies revealed the connection between left atrial appendage peak flow velocity (LAA-PEV) and postoperative persistent atrial fibrillation (AF) recurrence.
Long Wang, Yan Zhang, Wei Zhou, Jingjing Chen, Yongkang Li, Qian Tang, Bingxiu Chen, Huiling Zhang, Lucas Zellmer, Jin Chen, Zhangrong Chen, Wei Li, Xingde Liu, Haiyan Zhou   +13 more
doaj   +1 more source

Ablating Persistent Atrial Fibrillation Successfully [PDF]

Current Cardiology Reports, 2012
The ablation of persistent atrial fibrillation (AF) poses many challenges compared with ablation for paroxysmal AF, including greater procedural complexity, longer procedural time, unclear endpoints, increased patient comorbidity with a greater risk of procedural complications, and lower success rate.
David E, Krummen, Sanjiv M, Narayan
openaire   +2 more sources

Key Role of Left Atrial Appendage during Redo Ablation in a Case of Long-Standing Persistent Atrial Fibrillation

Case Reports in Cardiology, 2020
Extrapulmonary vein focal sources have been recognized as the source of atrial fibrillation in some cases, and empiric electric isolation of the left atrial appendage has been proposed for long-standing persistent atrial fibrillation by some.
Shaohui Wu, Guangchen Zou, Xu Liu, Weifeng Jiang, Mu Qin, Daoliang Zhang   +5 more
doaj   +1 more source

Atrial fibrillation gut syndrome: severe gastroparesis with pyloric spasm following radiofrequency catheter ablation of drug resistant symptomatic atrial fibrillation: a case report

Journal of Medical Case Reports, 2023
Background Atrial fibrillation is the most common cardiac arrhythmia, and cardiac ablation is one of the treatment modalities for persistent symptomatic atrial fibrillation.
Lakshmi Kannan, Anfal Fahim
doaj   +1 more source

Comparison of electrogram characteristics in persistent atrial fibrillation

Journal of Cardiovascular Electrophysiology, 2023
AbstractIntroductionMultiple analysis techniques evaluate electrograms during atrial fibrillation (AF), but none have been established to guide catheter ablation. This study compares electrogram properties recorded from multiple right (RA) and left atrial (LA) sites.MethodsMultisite LA/RA mapping (281 ± 176/239 ± 166 sites/patient) was performed in 42 ...
Jeffrey J. Goldberger, Ghaith Zaatari, Raul D. Mitrani, Catherine Blandon, Jorge Bohorquez, Jason Ng, Justin Ng, Alex Velasquez, Litsa Lambrakos, Rishi Arora   +9 more
openaire   +3 more sources

Structural and functional characteristics of myocard in patients with different forms of atrial fibrillation

Zaporožskij Medicinskij Žurnal, 2015
Aim. To study structural and functional characteristics of myocard in patients with different forms of atrial fibrillation. Atrial fibrillation is the most prevalent arrhythmia in clinical practice.
L. I. Vasilyeva , S. O. Pyvovarova, L. V. Sapozhnychenko, O. S. Kalashnykova, V. G. Dzyak   +4 more
doaj   +1 more source

The Antimalarial Chloroquine Reduces the Burden of Persistent Atrial Fibrillation

Frontiers in Pharmacology, 2019
In clinical practice, reducing the burden of persistent atrial fibrillation by pharmacological means is challenging. We explored if blocking the background and the acetylcholine-activated inward rectifier potassium currents (IK1 and IKACh) could be ...
Catalina Tobón, Laura C. Palacio, Bojjibabu Chidipi, Diana P. Slough, Thanh Tran, Nhi Tran, Michelle Reiser, Yu-Shan Lin, Bengt Herweg, Dany Sayad, Javier Saiz, Sami Noujaim   +11 more
doaj   +1 more source

Longstanding Persistent Atrial Fibrillation Ablation: How Do You Perform It?

Journal of Cardiac Arrhythmias, 2020
Longstanding-persistent atrial fibrillation is one of the most challenging arrhythmias to treat. While radiofrequency catheter ablation is highly effective in paroxysmal atrial fibrillation, pulmonary vein antral isolation (including posterior wall ...
Carola Gianni, Andrea Natale, Amin Al-Ahmad   +2 more
doaj   +4 more sources

Post-operative atrial fibrillation is influenced by beta-blocker therapy but not by pre-operative atrial cellular electrophysiology [PDF]

, 2006
We investigated whether post-cardiac surgery (CS) new-onset atrial fibrillation (AF) is predicted by pre-CS atrial cellular electrophysiology, and whether the antiarrhythmic effect of beta-blocker therapy may involve pre-CS pharmacological remodeling ...
Marshall, Gillian E., Russell, Julie A., Pau, David, Kane, Kathleen A., Workman, Antony J., Rankin, Andrew C., Redpath, Calum J., Norrie, John   +7 more
core   +5 more sources