Results 31 to 40 of about 77,977 (289)

Regional differences in APD restitution can initiate wavebreak and re-entry in cardiac tissue: A computational study [PDF]

, 2005
Background Regional differences in action potential duration (APD) restitution in the heart favour arrhythmias, but the mechanism is not well understood.
A Garfinkel, A Karma, A Panfilov, AT Winfree, BH van Huysduynen, C Antzelevitch, CS Kuo, D Noble, DW Frazier, EM Cherry, F Fenton, F Xie, FH Fenton, GK Moe, GX Yan, HN Pak, I Banville, J Han, JM Pastore, K Gima, K Yuuki, KJ Sampson, KJ Sampson, KR Laurita, KR Laurita, MA Watanabe, ML Riccio, MR Franz, P Taggart, P Taggart, PC Viswanathan, Peter Taggart, RH Clayton, RH Clayton, Richard H Clayton, SD Girouard, TJ Hund, ZL Qu   +37 more
core   +3 more sources

Ventricular response during lungeing exercise in horses with lone atrial fibrillation [PDF]

, 2013
Reasons for performing the study Atrial fibrillation (AF) is the most important dysrhythmia affecting performance in horses and has been associated with incoordination, collapse and sudden death.
De Clercq, Dominique, Decloedt, Annelies, Sys, Stanislas, Van Der Vekens, Nicky, van Loon, Gunther, Verheyen, Tinne   +5 more
core   +2 more sources

Regulating Retinoic Acid Availability during Development and Regeneration: The Role of the CYP26 Enzymes. [PDF]

, 2020
This review focuses on the role of the Cytochrome p450 subfamily 26 (CYP26) retinoic acid (RA) degrading enzymes during development and regeneration. Cyp26 enzymes, along with retinoic acid synthesising enzymes, are absolutely required for RA homeostasis
Roberts, C
core   +2 more sources

Pseudo-Premature Ventricular Complex Can Herald Device Malfunction

Research in Cardiovascular Medicine, 2018
The increasing number of complex functions in implantable devices demands for an increased ability to recognize these features during patient monitoring and assessment. New device algorithm and lead structures are embryonic concerning device implantation;
Amir Farjam Fazelifar, Mona Heidarali, Majid Haghjoo   +2 more
doaj   +1 more source

A High Precision Machine Learning-Enabled System for Predicting Idiopathic Ventricular Arrhythmia Origins

Frontiers in Cardiovascular Medicine, 2022
BackgroundRadiofrequency catheter ablation (CA) is an efficient antiarrhythmic treatment with a class I indication for idiopathic ventricular arrhythmia (IVA), only when drugs are ineffective or have unacceptable side effects.
Jianwei Zheng, Guohua Fu, Daniele Struppa, Islam Abudayyeh, Tahmeed Contractor, Kyle Anderson, Huimin Chu, Cyril Rakovski   +7 more
doaj   +1 more source

Cardiac electrical defects in progeroid mice and Hutchinson-Gilford progeria syndrome patients with nuclear lamina alterations [PDF]

, 2016
Hutchinson–Gilford progeria syndrome (HGPS) is a rare genetic disease caused by defective prelamin A processing, leading to nuclear lamina alterations, severe cardiovascular pathology, and premature death.
Benítez Iglesias, Raúl, Caballero, Ricardo, Cabello, Nuria, Calvo, Conrado J., González Gómez, Cristina, Gordon, Leslie B., Guadix, Juan A., Gúzman Martínez, Gabriela, Herraiz Martínez, Adela, Jiménez Borreguero, Luís J., Llach, Anna, López Otín, Carlos, Osorio, Fernando G., Riveras Torres, Jose, Vallmitjana Lees, Alexander   +14 more
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Ventricular Conduction Stability Noninvasively Identifies an Arrhythmic Substrate in Survivors of Idiopathic Ventricular Fibrillation

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2023
Background Idiopathic ventricular fibrillation (VF) is a diagnosis of exclusion following normal cardiac investigations. We sought to determine if exercise‐induced changes in electrical substrate could distinguish patient groups with various ventricular ...
Ji‐Jian Chow, Kevin M. W. Leong, Matthew J. Shun‐Shin, Julian O. M. Ormerod, Michael Koa‐Wing, David C. Lefroy, Phang Boon Lim, Nicholas W. F. Linton, Fu Siong Ng, Norman A. Qureshi, Zachary I. Whinnett, Nicholas S. Peters, Darrel P. Francis, Amanda M. Varnava, Prapa Kanagaratnam   +14 more
doaj   +1 more source

A study on stability analysis of atrial repolarization variability using ARX model in sinus rhythm and atrial tachycardia ECGs [PDF]

, 2016
© 2016 Elsevier Ireland Ltd Background The interaction between the PTa and PP interval dynamics from the surface ECG is seldom explained. Mathematical modeling of these intervals is of interest in finding the relationship between the heart rate and ...
Langley, Philip, Palanikumar, Gurusamy, Sivaraman, Jayaraman, Uma, Gandhi, Umapathy, M., Venkatesan, Sangareddi   +5 more
core   +1 more source

Acute echocardiographic effects of sotalol on ventricular systolic function in dogs with ventricular arrhythmias. [PDF]

, 2018
BackgroundSotalol is a commonly used antiarrhythmic drug that may alter ventricular function.ObjectiveTo determine the effect of sotalol on echocardiographic indices of ventricular systolic function in dogs with ventricular arrhythmias.AnimalsThirty-five
Anderson, Baumwart, Chetboul, Cornell, Dukes-McEwan, Hansson, Hoffmann, Hohnloser, Kaye, Mahmarian, Maran, Martin, Meurs, Meurs, Meurs, Meurs, Motskula, Oyama, Palermo, Peralta, Schnelle, Seidler, Singh, Smets, Stephenson, Summerfield, Visser, Visser, Wess, Wess, Zupan   +30 more
core   +2 more sources

Evaluation and Management of Premature Ventricular Complexes [PDF]

Circulation, 2020
Premature ventricular complexes (PVCs) are extremely common, found in the majority of individuals undergoing long-term ambulatory monitoring. Increasing age, a taller height, a higher blood pressure, a history of heart disease, performance of less physical activity, and smoking each predict a greater PVC frequency.
openaire   +2 more sources