Exploració per autor "Fiz Fernández, José Antonio"
Ara es mostren els items 21-40 de 41
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Identification of Obstructive Sleep Apnea patients from tracheal breath sound analysis during wakefulness in polysomnographic studies
Solà Soler, Jordi; Fiz Fernández, José Antonio; Torres Cebrián, Abel; Jané Campos, Raimon (2014)
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Accés restringit per política de l'editorialObstructive Sleep Apnea (OSA) is currently diagnosed by a full nocturnal polysomnography (PSG), a very expensive and time-consuming method. In previous studies we were able to distinguish patients with OSA through formant ... -
Index for estimation of muscle force from mechanomyogrpahy based on the Lempel-Ziv algorithm
Sarlabous Uranga, Leonardo; Torres Cebrián, Abel; Fiz Fernández, José Antonio; Morera, Josep; Jané Campos, Raimon (2013-02-19)
Article
Accés restringit per política de l'editorialThe study of the amplitude of respiratory muscle mechanomyographic (MMG) signals could be useful in clinical practice as an alternative non-invasive technique to assess respiratory muscle strength. The MMG signal is ... -
Inspiratory muscle activation increases with COPD severity as confirmed by non-invasive mechanomyographic analysis
Sarlabous Uranga, Leonardo; Torres Cebrián, Abel; Fiz Fernández, José Antonio; Martínez Llorens, Juana María; Gea Guiral, Joaquim; Jané Campos, Raimon (2017-05-18)
Article
Accés obertThere is a lack of instruments for assessing respiratory muscle activation during the breathing cycle in clinical conditions. The aim of the present study was to evaluate the usefulness of the respiratory muscle mechanomyogram ... -
Interpretation of the approximate entropy using fixed tolerance values as a measure of amplitude variations in biomedical signals
Sarlabous Uranga, Leonardo; Torres Cebrián, Abel; Fiz Fernández, José Antonio; Gea Guiral, Joaquim; Martínez Llorens, Juana María; Morera Prat, Josep Maria; Jané Campos, Raimon (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
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Accés restringit per política de l'editorialA new method for the quantification of amplitude variations in biomedical signals through moving approximate entropy is presented. Unlike the usual method to calculate the approximate entropy (ApEn), in which the tolerance ... -
Multistate Lempel-Ziv (MLZ) index interpretation as a measure of amplitude and complexity changes
Sarlabous Uranga, Leonardo; Torres Cebrián, Abel; Fiz Fernández, José Antonio; Gea, Joaquim; Galdiz, Juan B.; Jané Campos, Raimon (2009)
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Accés obertThe Lempel-Ziv complexity (LZ) has been widely used to evaluate the randomness of finite sequences. In general, the LZ complexity has been used to determine the complexity grade present in biomedical signals. The LZ ... -
Noninvasive measurement of inspiratory muscle performance by means of diaphragm muscle mechanomyographic signals in COPD patients during an incremental load respiratory test
Torres Cebrián, Abel; Sarlabous Uranga, Leonardo; Fiz Fernández, José Antonio; Gea Guiral, Joaquim; Martínez Llorens, Juana María; Morera Prat, Josep Maria; Jané Campos, Raimon (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
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Accés obertThe study of mechanomyographic (MMG) signals of respiratory muscles is a promising noninvasive technique in order to evaluate the respiratory muscular effort and efficiency. In this work, the MMG signal of the ... -
Normal non-regular snores as a tool for screening SAHS severity
Gil de Mesquita, Joana Margarida; Fiz Fernández, José Antonio; Solà Soler, Jordi; Morera Prat, Josep Maria; Jané Campos, Raimon (2011)
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Accés restringit per política de l'editorialSnoring is one of the earliest and most consistent sign of upper airway obstruction leading to Sleep Apnea-Hypopnea Syndrome (SAHS). Several studies on post-apneic snores, snores that are emitted immediately after an apnea, ... -
Novel approach to continuous adventitious respiratory sound analysis for the assessment of bronchodilator response
Lozano, Manuel; Fiz Fernández, José Antonio; Martínez Rivera, Carlos; Torrents, Aurora; Ruiz Manzano, Juan; Jané Campos, Raimon (2017-02-08)
Article
Accés obertBackground A thorough analysis of continuous adventitious sounds (CAS) can provide distinct and complementary information about bronchodilator response (BDR), beyond that provided by spirometry. Nevertheless, previous ... -
Nuevas técnicas diagnósticas de las enfermedades respiratorias : análisis de imagen
Fiz Fernández, José Antonio (Universitat Politècnica de Catalunya, 2016-07-13)
Tesi
Accés obertIn the present thesis 3 detailed studies were carried out that spring from 3 different diagnostic techniques that include bronoscopy, tuberculine bacillus infection diagnosis, and the control of oxygen therapy in chronic ... -
Performance evaluation of the Hilbert–Huang transform for respiratory sound analysis and its application to continuous adventitious sound characterization
Lozano, Manuel; Fiz Fernández, José Antonio; Jané Campos, Raimon (2016-03)
Article
Accés obertThe use of the Hilbert–Huang transform in the analysis of biomedical signals has increased during the past few years, but its use for respiratory sound (RS) analysis is still limited. The technique includes two steps: ... -
Reducción de interferencia cardíaca en señales MMG diafragmáticas de un protocolo de carga incremental sostenida mediante filtrado adaptativo RLS
Sarlabous Uranga, Leonardo; Torres Cebrián, Abel; Fiz Fernández, José Antonio; Jané Campos, Raimon (2012)
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Accés obertEn este trabajo se aplicó el filtrado adaptativo empleando el algoritmo RLS para reducir la interferencia de origen cardíaco en las señales mecanomiográficas diafragmáticas (MMGdi) registradas durante un protocolo de ... -
Regular and non regular snore features as markers of SAHS
Gil de Mesquita, Joana Margarida; Fiz Fernández, José Antonio; Solà Soler, Jordi; Morera Prat, Josep Maria; Jané Campos, Raimon (2010)
Text en actes de congrés
Accés obertSleep Apnea-Hypopnea Syndrome (SAHS) diagnosis is still done with an overnight multi-channel polysomnography. Several efforts are being made to study profoundly the snore mechanism and discover how it can provide an ... -
Relación entre la presión inspiratoria pico y la activación mecánica de los músculos inspiratorios durante respiración tranquila en pacientes con EPOC
Sarlabous Uranga, Leonardo; Torres Cebrián, Abel; Fiz Fernández, José Antonio; Gea Guiral, Joaquim; Martínez Llorens, Juana María; Jané Campos, Raimon (2014)
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Accés obertEn la enfermedad pulmonar obstructiva crónica (EPOC) la fuerza muscular inspiratoria (FMI) y la eficiencia mecánica de los músculos inspiratorios (EMMI) podrían verse reducidas como consecuencia de la hiperinsuflación. En ... -
Relationship between heart rate excursion and apnea duration in patients with Obstructive Sleep Apnea
Solà Soler, Jordi; Giraldo Giraldo, Beatriz; Jané Campos, Raimon; Fiz Fernández, José Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2017)
Comunicació de congrés
Accés restringit per política de l'editorialObstructive Sleep Apnea (OSA) is a sleep disorder with a high prevalence in the general population. It is a risk factor for many cardiovascular diseases, and an independent risk factor for cerebrovascular diseases such as ... -
Respiratory and spontaneous arousals in patients with sleep apnea hypopnea syndrome
Gil de Mesquita, Joana Margarida; Poree, F.; Carrault, Guy; Fiz Fernández, José Antonio; Abad, Jorge; Jané Campos, Raimon (Institute of Electrical and Electronics Engineers (IEEE), 2012)
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Accés restringit per política de l'editorialSleep in patients with Sleep Apnea-Hypopnea Syndrome (SAHS) is frequently interrupted with arousals. Increased amounts of arousals result in shortening total sleep time and repeated sleep-arousal change can result in sleep ... -
Respiratory rate detection by empirical mode decomposition method applied to diaphragm mechanomyographic signals
Estrada, Luis; Torres Cebrián, Abel; Sarlabous Uranga, Leonardo; Fiz Fernández, José Antonio; Jané Campos, Raimon (2014)
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Accés restringit per política de l'editorialNon-invasive evaluation of respiratory activity is an area of increasing research interest, resulting in the appearance of new monitoring techniques, ones of these being based on the analysis of the diaphragm mechanomyographic ... -
Short term oxygen therapy effects in hypoxemicpatients measured by drawing analysis
Fiz Fernández, José Antonio; Faúndez Zanuy, Marcos; Monte Moreno, Enrique; Roure Alcobé, Josep; Andreo, Felipe; Gomez, Rosa; Ruiz Manzano, Juan (2015-02-04)
Article
Accés obertBackground Chronic hypoxemia has deleterious effects on psychomotor function that can affect daily life. There are no clear results regarding short term therapy with low concentrations of O2 in hypoxemic patients. We seek ... -
Sincronización de sistemas de monitorización para el estudio de ronquidos en las distintas fases del sueño en pacientes con SAHS
López Picazo, Mirella; Solà Soler, Jordi; Fiz Fernández, José Antonio; Jané Campos, Raimon (2014)
Comunicació de congrés
Accés obertEl Síndrome de Apnea-Hipopnea del Sueño (SAHS) tiene una incidencia en sujetos de edad media, del 2-4% en mujeres y 4-6% en hombres, además de múltiples consecuencias asociadas. Sin embargo, a pesar de su prevalencia, menos ... -
Snoring analysis for the screening of sleep apnea hypopnea syndrome with a single-channel device developed using polysomnographic and snoring databases
Jané Campos, Raimon; Fiz Fernández, José Antonio; Solà Soler, Jordi; Gil de Mesquita, Joana Margarida; Morera Prat, Josep Maria (2011)
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Accés restringit per política de l'editorialSeveral studies have shown differences in acoustic snoring characteristics between patients with Sleep Apnea-Hypopnea Syndrome (SAHS) and simple snorers. Usually a few manually isolated snores are analyzed, with an emphasis ... -
Study of phase estimation methods to analyse cardiorespiratory synchronization in OSA patients
Solà Soler, Jordi; Giraldo Giraldo, Beatriz; Fiz Fernández, José Antonio; Jané Campos, Raimon (Institute of Electrical and Electronics Engineers (IEEE), 2016)
Comunicació de congrés
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