Browsing by Author "Fiz Fernández, José Antonio"
Now showing items 1-20 of 41
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Analysis of normal and continuous adventitious sounds for the assessment of asthma
(2014)
Part of book or chapter of book
Open Access -
Análisis de la intensidad de los sonidos respiratorios para el diagnóstico de la parálisis frénica unilateral
(2014)
Conference lecture
Open AccessEl análisis acústico de la intensidad de los sonidos respiratorios (ISR) es una medida indirecta y no invasiva de la función respiratoria, que permite comparar la actividad en los dos hemitórax de los pacientes con parálisis ... -
Análisis de sonidos adventicios continuos en pacientes asmáticos mediante el espectro de Hilbert
(Sociedad Española de Ingeniería Biomédica (SEIB), 2015)
Conference report
Restricted access - publisher's policyLos sonidos adventicios continuos (CAS) son uno de los principales síntomas del asma. Dada su importancia clínica, el análisis de estas señales requiere del uso de técnicas que permitan segmentarlas y caracterizarlas con ... -
Automatic differentiation of normal and continuous adventitious respiratory sounds using ensemble empirical mode decomposition and instantaneous frequency
(2016-03-01)
Article
Open AccessDifferentiating normal from adventitious respiratory sounds (RS) is a major challenge in the diagnosis of pulmonary diseases. Particularly, continuous adventitious sounds (CAS) are of clinical interest because they reflect ... -
Cancellation of cardiac interference in diaphragm EMG signals using an estimate of ECG reference signal
(2014)
Conference report
Open AccessThe analysis of the electromyographic signal of the diaphragm muscle (EMGdi) can provide important information in order to evaluate the respiratory muscular function. However, EMGdi signals are usually contaminated by the ... -
Cardiac interference reduction in diaphragmatic MMG signals during a maintained inspiratory pressure test
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Conference report
Restricted access - publisher's policyA recursive least square (RLS) adaptive filtering algorithm for reduction of cardiac interference in diaphragmatic mecanomyographic (MMGdi) signals is addressed in this paper. MMGdi signals were acquired with a capacitive ... -
Cardiorespiratory phase synchronization in OSA subjects during wake and sleep states
(2015)
Conference report
Restricted access - publisher's policyCardiorespiratory Phase Synchronization (CRPS) is a manifestation of coupling between cardiac and respiratory systems complementary to Respiratory Sinus Arrhythmia. In this work, we investigated CRPS during wake and sleep ... -
Clasificación bayesiana de sujetos roncadores con Síndrome de Apnea Hipoapnea del Sueño mediante un método Kernel
(2011)
Conference report
Open AccessEl gold standard para diagnosticar el Síndrome de Apnea Hipoapnea del Sueño (SAHS) es la polisomnografía (PSG), un procedimiento caro y laborioso. Resultaría de mucha ayuda disponer de un método de screening sencillo que ... -
Efficiency of mechanical activation of inspiratory muscles in COPD using sample entropy
(2015-12)
Article
Restricted access - publisher's policyRespiratory muscle dysfunction is a common problem in patients with chronic obstructive pulmonary disease (COPD) and has mostly been related to pulmonary hyperinflation [1, 2]. Associated diaphragm shortening and deleterious ... -
Entropía aproximada móvil con valores de tolerancia fijos como medida de las variaciones de amplitud en señales biomédicas
(2011)
Conference report
Open AccessEn este trabajo se presenta un nuevo método para cuantificar las variaciones de amplitud en señales biomédicas empleando la entropía aproximada (ApEn) en ventanas móviles y con valores de tolerancia (r) fijos. Los valores ... -
Estimation of bilateral asynchrony between diaphragm mechanomyographic signals in patients with Chronic Obstructive Pulmonary Disease
(2014)
Conference report
Restricted access - publisher's policyThe aim of the present study was to measure bilateral asynchrony in patients suffering from Chronic Obstructive Pulmonary Disease (COPD) performing an incremental inspiratory load protocol. Bilateral asynchrony was estimated ... -
Estimation of instantaneous frequency from empirical mode decomposition on respiratory sounds analysis
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Conference report
Restricted access - publisher's policyInstantaneous frequency (IF) calculated by empirical mode decomposition (EMD) provides a novel approach to analyze respiratory sounds (RS). Traditionally, RS have been analyzed using classical time-frequency distributions, ... -
Evaluación de diferentes algoritmos adaptativos para la atenuación de la interferencia cardiaca en señales mecanomiográficas simuladas
(2012)
Conference report
Open AccessEl estudio de la señal mecanomiográfica del músculo diafragma (MMGdi) es una técnica utilizada para evaluar el esfuerzo muscular respiratorio. El estudio de la relación entre los parámetros de amplitud y frecuencia de ... -
Evaluación de la actividad de los músculos inspiratorios mediante señales mecanomiográficas en pacientes con EPOC durante un protocolo de carga incremental
(2011)
Conference report
Open AccessEl estudio de señales mecanomiográficas (MMG) de músculos respiratorios es una técnica prometedora para evaluar el esfuerzo muscular respiratorio. En este trabajo se han analizado las señales MMG del músculo diafragma ... -
Evaluación de la vía aérea superior en sujetos con SAHS mediante análisis del sonido respiratorio durante vigilia
(2014)
Conference report
Open AccessEl Síndrome de Apnea-Hipopnea del Sueño (SAHS) actualmente se diagnostica mediante la Polisomnografía (PSG), una prueba cara y costosa. Se han propuesto diversas alternativas para ayudar al cribado previo de SAHS. En ... -
Evaluation and adaptive attenuation of the cardiac vibration interference in mechanomyographic signals
(Institute of Electrical and Electronics Engineers (IEEE), 2012)
Conference report
Restricted access - publisher's policyThe study of the mechanomyographic signal of the diaphragm muscle (MMGdi) is a promising technique in order to evaluate the respiratory muscles effort. The relationship between amplitude and frequency parameters of this ... -
Evaluation of the respiratory muscles efficiency during an incremental flow respiratory test
(2011)
Conference lecture
Restricted access - publisher's policyThe aim of this study was to evaluate the respiratory muscles efficiency during a progressive incremental flow (IF) respiratory test in healthy and Chronic Obstructive Pulmonary Disease (COPD) subjects. To achieve this, ... -
Evaluation of the respiratory muscular function by means of diaphragmatic mechanomyographic signals in copd patients
(2009)
Conference report
Open AccessThe study of mechanomyographic (MMG) signals of respiratory muscles is a promising technique in order to evaluate the respiratory muscular effort. In this work MMG signals from left and right hemidiaphragm (MMGl and MMGr, ... -
Evidence towards improved estimation of respiratory muscle effort from diaphragm mechanomyographic signals with cardiac vibration interference using sample entropy with fixed tolerance values
(2014-02-19)
Article
Open AccessThe analysis of amplitude parameters of the diaphragm mechanomyographic (MMGdi) signal is a non-invasive technique to assess respiratory muscle effort and to detect and quantify the severity of respiratory muscle weakness. ... -
Fractal dimension analysis of malignant and benign endobronchial ultrasound nodes
(2014-06-12)
Article
Open AccessBackground: Endobronchial ultrasonography (EBUS) has been applied as a routine procedure for the diagnostic of hiliar and mediastinal nodes. The authors assessed the relationship between the echographic appearance of ...
