Results 61 to 70 of about 31,527 (236)

Complete atrial-specific knockout of sodium-calcium exchange eliminates sinoatrial node pacemaker activity. [PDF]

, 2013
The origin of sinoatrial node (SAN) pacemaker activity in the heart is controversial. The leading candidates are diastolic depolarization by "funny" current (If) through HCN4 channels (the "Membrane Clock" hypothesis), depolarization by cardiac Na-Ca ...
Alber, Sarah, Goldhaber, Joshua I, Groenke, Sabine, Jordan, Maria C, Karagueuzian, Hrayr S, Lamp, Scott T, Larson, Eric D, Nakano, Atsushi, Nakano, Haruko, Philipson, Kenneth D, Proenza, Catherine, Ren, Xiaoyan, Roos, Kenneth P, Zhang, Rui   +13 more
core   +2 more sources

Junctional ectopic tachycardia (JET)

Journal of Arrhythmia, 2020
Junctional ectopic tachycardia (JET) is a tachyarrhythmia arising from the atrioventricular node and His bundle area. Enhanced normal automaticity has been postulated as the mechanism of JET in the majority of patients.
Mohammad Alasti, Sam Mirzaee, Colin Machado, Stewart Healy, Logan Bittinger, David Adam, Emily Kotschet, Jack Krafchek, Jeffrey Alison   +8 more
doaj   +1 more source

Wide QRS complex tachycardia with a mysterious mask—Tricuspid isthmus‐dependent atrial flutter with preexcitation syndrome and dual atrioventricular nodal pathway conduction

Clinical Case Reports, 2023
Key Clinical Message Atrial flutter (AFL) and supraventricular tachycardia (SVT) are common arrhythmias in clinic. However, some AFL cases may present additional complexities, such as both accessory pathways (AP) and dual atrioventricular node pathways ...
Chao Liu, Changjin Li, Xiaonan Xu, Mingyao Zhou, Xinmiao Huang, Bingyan Zhou, Jiang Cao, Songqun Huang, Zhifu Guo   +8 more
doaj   +1 more source

Radiofrequency Catheter Ablation of Atrioventricular Nodal Reentrant Tachycardia: It Is Not Always As It Is Expected [PDF]

, 2004
Observation of Coincident arrhythmias is not uncommon but the co-existence of idiopathic verapamil sensitive left ventricular tachycardia (ILVT) with other arrhythmias is very rare.
Arya, Arash, Emkanjoo, Zahra, Haghjoo, Majid, Heydari, Alireza, Sadr-Ameli, Mohammad Ali   +4 more
core   +1 more source

Role of slow pathway after nodal fast pathway ablation on the basic and rate-dependent properties of the isolated rabbit atrioventricular node [PDF]

, 2009
Introduction: The aim of this study was to obtain new insights into the possible relations between functional properties of slow concealed pathway and rate-dependent properties of the AV-node.
Khori, V., Mirabbasi, A., Nayebpour, M., Pourabouk, M.   +3 more
core  

Clinical and Electrophysiological Predictors of Ventriculoatrial Conduction in Patients under Evaluation for Ventricular Tachyarrhythmia

Journal of Tehran University Heart Center, 2010
Background: Ventriculoatrial (VA) conduction has an important role in the initiation and maintenance of some arrhythmias. The aim of this study was to evaluate whether clinical and electrophysiological parameters of atrioventricular (AV) conduction can ...
Mohammad Reza Dehghani, Azam Soleimani, Mohammad Reza Samiei Nasab   +2 more
doaj  

Premature MicroRNA-1 Expression Causes Hypoplasia of the Cardiac Ventricular Conduction System. [PDF]

, 2019
Mammalian cardiac Purkinje fibers (PFs) are specified from ventricular trabecular myocardium during mid-gestation and undergo limited proliferation before assuming their final form.
Evangelista, Melissa, Galang, Giselle, Samal, Eva, Srivastava, Deepak, Vedantham, Vasanth, Zhao, Yong   +5 more
core   +2 more sources

Prolongation of AV nodal refractoriness by Ruta graveolens in isolated rat hearts [PDF]

, 2008
Objectives: To evaluate concentration-dependent effects of total extract of Rusta graveolens and its purified alkaloid fraction on the nodal basic and functional properties.
Golalipour, M.J., Khori, V., Marjani, A., Nayebpour, M., Semnani, S.   +4 more
core  

Force‐sensing catheters during pediatric radiofrequency ablation: The FEDERATION Study [PDF]

, 2017
Background Based on data from studies of atrial fibrillation ablations, optimal parameters for the TactiCath (TC; St. Jude Medical, Inc) force‐sensing ablation catheter are a contact force of 20 g and a force‐time integral of 400 
Avari Silva, Jennifer N, Bowman, Tammy, Dalal, Aarti S, Nguyen, Hoang H, Van Hare, George F   +4 more
core   +2 more sources