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The refractory period and conduction delay of the atrioventricular (AV) node play a crucial role in regulating the heart rate during atrial fibrillation (AF). Beat-to-beat variations in these properties are known to be induced by the…

Tissues and Organs · Quantitative Biology 2025-06-25 Mattias Karlsson , Felix Plappert , Pyotr G Platonov , Sten Östenson , Mikael Wallman , Frida Sandberg

Information about autonomic nervous system (ANS) activity may be valuable for personalized atrial fibrillation (AF) treatment but is not easily accessible from the ECG. In this study, we propose a new approach for ECG-based assessment of…

Medical Physics · Physics 2024-05-10 Felix Plappert , Gunnar Engström , Pyotr G. Platonov , Mikael Wallman , Frida Sandberg

Atrial Fibrillation (AF) is a heart's arrhythmia which, despite being often asymptomatic, represents an important risk factor for stroke, therefore being able to predict AF at the electrocardiogram exam, would be of great impact on actively…

Signal Processing · Electrical Eng. & Systems 2022-02-14 A. Scagnetto , G. Barbati , I. Gandin , C. Cappelletto , G. Baj , A. Cazzaniga , F. Cuturello , A. Ansuini , L. Bortolussi , A. Di Lenarda

Atrial fibrillation (AF) is the most common cardiac arrhythmia, which is clinically identified with irregular and rapid heartbeat rhythm. AF puts a patient at risk of forming blood clots, which can eventually lead to heart failure, stroke,…

Signal Processing · Electrical Eng. & Systems 2023-06-28 Jianxin Xie , Stavros Stavrakis , Bing Yao

Heart rate variability (HRV) indices describe properties of interbeat intervals in electrocardiogram (ECG). Usually HRV is measured exclusively in normal sinus rhythm (NSR) excluding any form of paroxysmal rhythm. Atrial fibrillation (AF)…

Applications · Statistics 2023-08-28 Nikita Markov , Ilya Kotov , Konstantin Ushenin , Yakov Bozhko

Atrial fibrillation (AF) is a common cardiac arrhythmia characterized by rapid and irregular contractions of the atria. It significantly elevates the risk of strokes due to slowed blood flow in the atria, especially in the left atrial…

Machine Learning · Computer Science 2024-01-19 Tian Xie

Background: Atrial fibrillation (AF) is one of the most common cardiac arrhythmias that affects millions of people each year worldwide and it is closely linked to increased risk of cardiovascular diseases such as stroke and heart failure.…

Atrial fibrillation (AF) is the most common arrhythmia, increasing the risk of stroke, heart failure, and other cardiovascular complications. While AF detection algorithms perform well in identifying persistent AF, early-stage progression,…

Machine Learning · Computer Science 2025-08-28 Yongbin Lee , Ki H. Chon

Objectives: Atrial fibrillation (AF) is a common heart rhythm disorder associated with deadly and debilitating consequences including heart failure, stroke, poor mental health, reduced quality of life and death. Having an automatic system…

Signal Processing · Electrical Eng. & Systems 2018-01-31 Philip Warrick , Masun Nabhan Homsi

Atrial fibrillation (AF) is associated with cognitive impairment/dementia, independently of clinical cerebrovascular events (stroke/TIA). One of the plausible mechanisms is the occurrence of AF-induced transient critical hemodynamic events;…

Medical Physics · Physics 2019-03-11 Andrea Saglietto , Stefania Scarsoglio , Luca Ridolfi , Fiorenzo Gaita , Matteo Anselmino

Atrial fibrillation (AF) is the most common form of arrhythmia with accelerated and irregular heart rate (HR), leading to both heart failure and stroke and being responsible for an increase in cardiovascular morbidity and mortality. In…

Fluid Dynamics · Physics 2018-06-26 Stefania Scarsoglio , Caterina Gallo , Luca Ridolfi

A network-based approach is presented to investigate the cerebrovascular flow patterns during atrial fibrillation (AF) with respect to normal sinus rhythm (NSR). AF, the most common cardiac arrhythmia with faster and irregular beating, has…

Data Analysis, Statistics and Probability · Physics 2017-09-27 Stefania Scarsoglio , Fabio Cazzato , Luca Ridolfi

Atrial Fibrillation (AF) is an abnormal heart rhythm which can trigger cardiac arrest and sudden death. Nevertheless, its interpretation is mostly done by medical experts due to high error rates of computerized interpretation. One study…

Signal Processing · Electrical Eng. & Systems 2019-08-20 Yuxi Zhou , Shenda Hong , Junyuan Shang , Meng Wu , Qingyun Wang , Hongyan Li , Junqing Xie

Detection of atrial fibrillation (AF), a type of cardiac arrhythmia, is difficult since many cases of AF are usually clinically silent and undiagnosed. In particular paroxysmal AF is a form of AF that occurs occasionally, and has a higher…

Neurons and Cognition · Quantitative Biology 2018-05-24 Supreeth P. Shashikumar , Amit J. Shah , Gari D. Clifford , Shamim Nemati

Introduction: Atrial fibrillation (AF) is the most common heart arrhythmia, characterized by the presence of fibrillatory waves (f-waves) in the ECG. We introduce a voting scheme to estimate the dominant atrial frequency (DAF) of f-waves.…

Signal Processing · Electrical Eng. & Systems 2022-09-09 Shany Biton , Mahmoud Suleiman , Noam Ben Moshe , Leif Sörnmo , Joachim A. Behar

Many types of ventricular and atrial cardiac arrhythmias have been discovered in clinical practice in the past 100 years, and these arrhythmias are a major contributor to sudden cardiac death. Ventricular tachycardia, ventricular…

Machine Learning · Computer Science 2022-06-13 Ashkan Parsi

Atrial fibrillation (AF) increases the risk of stroke by a factor of four to five and is the most common abnormal heart rhythm. The progression of AF with age, from short self-terminating episodes to persistence, varies between individuals…

Tissues and Organs · Quantitative Biology 2016-10-12 Kishan A. Manani , Kim Christensen , Nicholas S. Peters

Atrial fibrillation(termed as AF/Afib henceforth) is a discrete and often rapid heart rhythm that can lead to clots near the heart. We can detect Afib by ECG signal by the absence of p and inconsistent intervals between R waves as shown in…

Machine Learning · Computer Science 2021-12-24 Arjun Sridharkumar , Sai Bhargav , Rahul Guntha

Cardiovascular diseases (CVDs) are the number one cause of death worldwide. While there is growing evidence that the atrial fibrillation (AF) has strong associations with various CVDs, this heart arrhythmia is usually diagnosed using…

Systems and Control · Electrical Eng. & Systems 2022-07-13 Wei-Ying Yi , Peng-Fei Liu , Sheung-Lai Lo , Ya-Fen Chan , Yu Zhou , Yee Leung , Kam-Sang Woo , Alex Pui-Wai Lee , Jia-Min Chen , Kwong-Sak Leung

Surgical ablation (SA) is the most effective procedure to terminate atrial fibrillation (AF) in patients requiring concomitant open heart surgery. However, considering the great stress provoked in the patients heart, along with the benefits…

Signal Processing · Electrical Eng. & Systems 2024-01-22 Juan Rodenas , Pilar Escribano , Miguel Martinez-Iniesta , Manuel Garcia , Fernando Hornero , Jose J Rieta , Raul Alcaraz
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