Buscar en RiuNet

Listar

Todo RiuNet

Mi cuenta

Acceder

Ayuda RiuNet

Admin. UPV

Listar por palabra clave "Sample entropy"

Mostrando ítems 1-20 de 25

Página siguiente

A Straightforward Methodology to Distinguish Complex Fractionated Atrial Electrograms of Paroxysmal from Persistent Atrial Fibrillation

Finotti, Emanuela; Ciaccio, Edward J.; Garan, Hasan; Bertomeu-González, Vicente; Alcaraz, Raúl; Rieta, J J (IEEE, 2020-10-30)

[EN] Many indices aimed at discriminating between paroxysmal and persistent atrial fibrillation (ParAF vs. PerAF) have been previously studied and assessed via statistical tests in order to suggest optimized approaches to ...
Assessment of Dispersion and Bubble Entropy Measures for Enhancing Preterm Birth Prediction Based on Electrohysterographic Signals

Nieto del-Amor, Félix; Beskhani, Raja; Ye Lin, Yiyao; Garcia-Casado, Javier; Díaz-Martínez, María del Alba; Monfort-Ortiz, Rogelio; Diago-Almela, Vicente Jose; Hao, Dongmei; Prats-Boluda, Gema (MDPI AG, 2021-09-10)

[EN] One of the remaining challenges for the scientific-technical community is predicting preterm births, for which electrohysterography (EHG) has emerged as a highly sensitive prediction technique. Sample and fuzzy entropy ...
Characterization of Artifact Influence on the Classification of Glucose Time Series Using Sample Entropy Statistics

Cuesta Frau, David; Novák, Daniel; Burda, Vaclav; Molina Picó, Antonio; Vargas-Rojo, B.; Mraz, Milos; Kavalkova, Petra; Benes, Marek; Haluzik, Martin (MDPI AG, 2018-11-12)

[EN] This paper analyses the performance of SampEn and one of its derivatives, Fuzzy Entropy (FuzzyEn), in the context of artifacted blood glucose time series classification. This is a difficult and practically unexplored ...
Characterization of complex fractionated atrial electrograms by Sample Entropy: An international multi-center study

Cirugeda Roldán, Eva María; Novak, Daniel; Kremen, Vaclav; Cuesta Frau, David; Keller, Matthias; Luik, Armin; Srutova, Martina (MDPI, 2015-11)

Atrial fibrillation (AF) is the most commonly clinically-encountered arrhythmia. Catheter ablation of AF is mainly based on trigger elimination and modification of the AF substrate. Substrate mapping ablation of complex ...
Classification of fever patterns using a single extracted entropy feature: A feasibility study based on Sample Entropy

Cuesta Frau, David; Miró Martínez, Pau; Oltra Crespo, Sandra; Molina Picó, Antonio; Vargas, Borja; González, Paula; Mahabala, Chakrapani; Pradeepa H. Dakappa (Springfield MO: American Institute of Mathematical Sciences, 2019-09-30)

[EN] Feveris a common symptom of many diseases. Fever temporal patterns can be different depending on the specific pathology. Differentiation of diseases based on multiple mathematical features and visua lobservations has ...
Classification of paroxysmal and persistent atrial fibrillation in ambulatory ECG recordings

Alcaraz, Raúl; Sandberg, Frida; Sornmo, Leif; Rieta Ibañez, José Joaquín (Institute of Electrical and Electronics Engineers (IEEE), 2011-05)

The problem of classifying short atrial fibrillatory segments in ambulatory ECG recordings as being either paroxysmal or persistent is addressed by investigating a robust approach to signal characterization. The method ...
Comparative study of approximate entropy and sample entropy robustness to spikes

Molina Picó, Antonio; Cuesta Frau, David; Riobo Aboy, Pedro Mateo; Crespo Sánchez, María Cristina; Miró Martínez, Pau; Oltra Crespo, Sandra (Elsevier, 2011-10)

Objective: There is an ongoing research effort devoted to characterize the signal regularity metrics approximate entropy (ApEn) and sample entropy (SampEn) in order to better interpret their results in the context of ...
Comparative study of entropy sensitivity to missing biosignal data

Cirugeda Roldán, Eva María; Cuesta Frau, David; Miró Martínez, Pau; Oltra Crespo, Sandra (MDPI, 2014-11)

Entropy estimation metrics have become a widely used method to identify subtle changes or hidden features in biomedical records. These methods have been more effective than conventional linear techniques in a number of ...
Dispersion Entropy: A Measure of Electrohysterographic Complexity for Preterm Labor Discrimination

Nieto-del-Amor, Félix; Ye Lin, Yiyao; Garcia-Casado, Javier; Díaz-Martínez, María del Alba; González Martínez, María; Monfort-Ortiz, R.; Prats-Boluda, Gema (SCITEPRESS, 2021-02-13)

[EN] Although preterm labor is a major cause of neonatal death and often leaves health sequels in the survivors, there are no accurate and reliable clinical tools for preterm labor prediction. The Electrohysterogram (EHG) ...
Entropy at the right atrium as a predictor of atrial fibrillation recurrence outcome after pulmonary vein ablation

Cervigon, Raquel; Moreno, Javier; Garcia-Quintanilla, Jorge; Perez-Villacastin, Julian; Castells, Francisco (Walter de Gruyter GmbH, 2016-02)

[EN] Atrial fibrillation (AF) recurrence rates after successful ablation procedures are still high and difficult to predict. This work studies the capability of entropy measured from intracardiac recordings as an indicator ...
Estudio comparativo de las diferentes medidas de entropía para la predicción del parto prematuro

Nieto del Amor, Félix (Universitat Politècnica de València, 2021-02-17)

[ES] El parto prematuro es una situación de alto riesgo que tiene una prevalencia superior al 10% de los partos, afectando a más de 15 millones de familias en el mundo. Sus repercusiones se muestran tanto en la salud materno ...
Fuzzy and Sample Entropies as Predictors of Patient Survival Using Short Ventricular Fibrillation Recordings during out of Hospital Cardiac Arrest

Chicote, Beatriz; Irusta, Unai; Aramendi, Elisabete; Alcaraz, R.; Rieta, J J; Isasi, Iraia; Alonso, Daniel; Baqueriza, María del Mar; Ibarguren, Karlos (MDPI AG, 2018-08)

[EN] Optimal defibrillation timing guided by ventricular fibrillation (VF) waveform analysis would contribute to improved survival of out-of-hospital cardiac arrest (OHCA) patients by minimizing myocardial damage caused ...
Influence of QRS complex detection errors on entropy algorithms. Application to heart rate variability discrimination

Molina Picó, Antonio; Cuesta Frau, David; Miró Martínez, Pau; Oltra Crespo, Sandra; Riobo Aboy, Pedro Mateo (Elsevier, 2013-04)

Signal entropy measures such as Approximate Entropy (ApEn) and Sample Entropy (SampEn) are widely used in Heart Rate Variability (HRV) analysis and biomedical research. In this article, we analyze the influence of QRS ...
Model Selection for Body Temperature Signal Classification Using Both Amplitude and Ordinality-Based Entropy Measures

Cuesta Frau, David; Miró Martínez, Pau; Oltra Crespo, Sandra; Jordán Núñez, Jorge; Vargas-Rojo, B.; González, Paula; Varela-Entrecanales, Manuel (MDPI AG, 2018)

[EN] Many entropy-related methods for signal classification have been proposed and exploited successfully in the last several decades. However, it is sometimes difficult to find the optimal measure and the optimal parameter ...
Multi-scale Entropy Evaluates the Proarrhythmic Condition of Persistent Atrial Fibrillation Patients Predicting Early Failure of Electrical Cardioversion

Cirugeda Roldan, Eva María; Calero, Sofía; Hidalgo, Víctor Manuel; Enero, José; Rieta, J J; Alcaraz, Raúl (MDPI AG, 2020-07)

[EN] Atrial fibrillation (AF) is nowadays the most common cardiac arrhythmia, being associated with an increase in cardiovascular mortality and morbidity. When AF lasts for more than seven days, it is classified as persistent ...
Multidimensional Fibrillatory Waves Analysis for Improved Electrical Cardioversion Outcome Prediction in Persistent Atrial Fibrillation

Cirugeda, Eva M.; Calero, Sofía; Plancha, Eva; Enero, José; Rieta, J J; Alcaraz, Raúl (IEEE, 2020-10-30)

[EN] The European Society of Cardiology guidelines recommend electrical cardioversion (ECV) as a rhythm control strategy in persistent atrial fibrillation (AF). Although being able to initially restore sinus rhythm in most ...
Noninvasive predictors of atrial fibrillation early recurrence after electrical cardioversion and their link to atrial remodeling

Alcaraz, Raúl; Hornero Sos, Fernando; Rieta, J J (International Society for Bioelectromagnetism, 2013-12)

[EN] Several clinical factors have been studied to predict atrial fibrillation (AF) recurrence after electrical cardioversion (ECV) with limited predictive value. In this work, several time-frequency parameters from the ...
Noninvasive time and frequency predictors of long-standing atrial fibrillation early recurrence after electrical cardioversion

Alcaraz, Raúl; Hornero, Fernando; Rieta Ibañez, José Joaquín (wiley, 2011-05-23)

Background: Several clinical factors have been studied to predict atrial fibrillation (AF) recurrence after electrical cardioversion (ECV) with limited predictive value. Methods: A method able to predict robustly long-standing ...
Permutation entropy: Influence of amplitude information on time series classification performance

Cuesta Frau, David (2019)

[EN] Permutation Entropy (PE) is a very popular complexity analysis tool for time series. Despite its simplicity, it is very robust and yields goods results in applications related to assessing the randomness of a sequence, ...
Refined Electrical Cardioversion Outcome Prediction with Bipolar Surface Standard Leads for Patients in Persistent Atrial Fibrillation

Cirugeda, Eva M.; Calero, Sofía; Quesada, Aurelio; Hidalgo, Víctor M.; Rieta, J J; Alcaraz, Raúl (IEEE, 2020-10-30)

[EN] For persistent atrial fibrillation (AF), a low-cost, simple and effective rhythm control strategy is electrical cardioversion (ECV). This procedure presents high mid- and long-term AF recurrence rates, so anticipation ...