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To drive health innovation that meets the needs of all and democratize healthcare, there is a need to assess the generalization performance of deep learning (DL) algorithms across various distribution shifts to ensure that these algorithms…

Objective: We propose a non-contact approach for atrial fibrillation (AF) detection from face videos. Methods: Face videos, electrocardiography (ECG), and contact photoplethysmography (PPG) from 100 healthy subjects and 100 AF patients are…

Image and Video Processing · Electrical Eng. & Systems 2022-08-10 Zhaodong Sun , Juhani Junttila , Mikko Tulppo , Tapio Seppänen , Xiaobai Li

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) is the most common cardiac arrhytmia, characterised by the chaotic motion of electrical wavefronts in the atria. In clinical practice, AF is classified under two primary categories: paroxysmal AF, short intermittent…

Tissues and Organs · Quantitative Biology 2020-07-01 Alberto Ciacci , Max Falkenberg , Kishan A. Manani , Tim S. Evans , Nicholas S. Peters , Kim Christensen

Atrial Fibrillation is a heart condition characterized by erratic heart rhythms caused by chaotic propagation of electrical impulses in the atria, leading to numerous health complications. State-of-the-art models employ complex algorithms…

Quantitative Methods · Quantitative Biology 2019-12-02 Paul Samuel Ignacio , David Uminsky , Christopher Dunstan , Esteban Escobar , Luke Trujillo

Background. Different mechanisms have been proposed to relate atrial fibrillation (AF) and coronary flow impairment, even in absence of relevant coronary artery disease (CAD). However, the underlying hemodynamics remains unclear. Aim of the…

Medical Physics · Physics 2019-04-17 Stefania Scarsoglio , Caterina Gallo , Andrea Saglietto , Luca Ridolfi , Matteo Anselmino

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

Remote patient monitoring based on wearable single-lead electrocardiogram (ECG) devices has significant potential for enabling the early detection of heart disease, especially in combination with artificial intelligence (AI) approaches for…

Signal Processing · Electrical Eng. & Systems 2024-04-30 Aruna Mohan , Danne Elbers , Or Zilbershot , Fatemeh Afghah , David Vorchheimer

Atrial fibrillation (AF) consequences on the heart valve dynamics are usually studied along with a valvular disfunction or disease, since in medical monitoring the two pathologies are often concomitant. Aim of the present work is to study,…

Fluid Dynamics · Physics 2015-10-27 Stefania Scarsoglio , Carlo Camporeale , Andrea Guala , Luca Ridolfi

A novel single-lead f-wave extraction algorithm based on the modern diffusion geometry data analysis framework is proposed. The algorithm is essentially an averaged beat subtraction algorithm, where the ventricular activity template is…

Data Analysis, Statistics and Probability · Physics 2017-11-01 John Malik , Neil Reed , Chun-Li Wang , Hautieng Wu

Atrial fibrillation is a heart rhythm disorder that affects tens of millions people worldwide. The most effective treatment is catheter ablation. This involves irreversible heating of abnormal cardiac tissue facilitated by electroanatomical…

Medical Physics · Physics 2022-11-01 Jiyue He , Arkady Pertsov , Sanjay Dixit , Katie Walsh , Eric Toolan , Rahul Mangharam

The complexity of the patterns associated with Atrial Fibrillation (AF) and the high level of noise affecting these patterns have significantly limited the current signal processing and shallow machine learning approaches to get accurate AF…

Quantitative Methods · Quantitative Biology 2019-02-18 Sajad Mousavi , Fatemeh Afghah , Abolfazl Razi , U. Rajendra Acharya

Objective: This work aims at providing a new method for the automatic detection of atrial fibrillation, other arrhythmia and noise on short single lead ECG signals, emphasizing the importance of the interpretability of the classification…

Artificial Intelligence · Computer Science 2021-12-09 Tomás Teijeiro , Constantino A. García , Daniel Castro , Paulo Félix

We tackle the problem of classifying Electrocardiography (ECG) signals with the aim of predicting the onset of Paroxysmal Atrial Fibrillation (PAF). Atrial fibrillation is the most common type of arrhythmia, but in many cases PAF episodes…

Machine Learning · Computer Science 2018-04-06 Filippo Maria Bianchi , Lorenzo Livi , Alberto Ferrante , Jelena Milosevic , Miroslaw Malek

The mechanism of atrial fibrillation (AF) is poorly understood, resulting in disappointing success rates of ablative treatment. Different mechanisms defined largely by different atrial activation patterns have been proposed and, arguably,…

Tissues and Organs · Quantitative Biology 2020-01-27 Max Falkenberg , Andrew J. Ford , Anthony C. Li , Alberto Ciacci , Nicholas S. Peters , Kim Christensen

Although atrial fibrillation (AF), a common arrhythmia, frequently presents in patients with underlying valvular disease, its hemodynamic contributions are not fully understood. The present work aimed to computationally study how physical…

Atrial fibrillation (AF) is a prevalent cardiac arrhythmia often treated concomitantly with other cardiac interventions through the Cox Maze procedure. This highly invasive intervention is still linked to a long-term recurrence rate of…

Signal Processing · Electrical Eng. & Systems 2024-01-18 P. Escribano , J. Ródenas , M. García , F. Hornero , J. M. Gracia-Baena , R. Alcaraz , J. J. Rieta

Ventricular Fibrillation (VF), one of the most dangerous arrhythmias, is responsible for sudden cardiac arrests. Thus, various algorithms have been developed to predict VF from Electrocardiogram (ECG), which is a binary classification…

Machine Learning · Computer Science 2019-03-13 Nabil Ibtehaz , M. Saifur Rahman , M. Sohel Rahman

Estimation of the fetal heart rate (FHR) has gained interest in the last century, low heart rate variability has been studied to identify intrauterine growth restricted fetuses (prepartum), and abnormal FHR patterns have been associated…

Computer Vision and Pattern Recognition · Computer Science 2016-06-06 Joachim Behar

Atrial arrhythmia can be categorized into tachycardia, flutter, and fibrillation. Atrial fibrillation is a prevalent heart disease that results in weak and irregular contractions of the atria. It affects millions people worldwide and…

Medical Physics · Physics 2024-02-01 Jiyue He