Methods Inf Med - Linear and nonlinear analysis of base lung sound in extrinsic allergic alveolitis patients in comparison to healthy subjects.

Tópicos

{ signal(2180) analysi(812) frequenc(800) }
{ patient(2315) diseas(1263) diabet(1191) }
{ age(1611) year(1155) adult(843) }
{ featur(3375) classif(2383) classifi(1994) }
{ visual(1396) interact(850) tool(830) }
{ blood(1257) pressur(1144) flow(957) }
{ spatial(1525) area(1432) region(1030) }
{ group(2977) signific(1463) compar(1072) }
{ cancer(2502) breast(956) screen(824) }
{ intervent(3218) particip(2042) group(1664) }
{ result(1111) use(1088) new(759) }
{ data(1737) use(1416) pattern(1282) }
{ measur(2081) correl(1212) valu(896) }
{ network(2748) neural(1063) input(814) }
{ assess(1506) score(1403) qualiti(1306) }
{ treatment(1704) effect(941) patient(846) }
{ error(1145) method(1030) estim(1020) }
{ concept(1167) ontolog(924) domain(897) }
{ extract(1171) text(1153) clinic(932) }
{ method(1557) propos(1049) approach(1037) }
{ case(1353) use(1143) diagnosi(1136) }
{ data(3963) clinic(1234) research(1004) }
{ research(1085) discuss(1038) issu(1018) }
{ import(1318) role(1303) understand(862) }
{ studi(1119) effect(1106) posit(819) }
{ record(1888) medic(1808) patient(1693) }
{ model(2656) set(1616) predict(1553) }
{ data(2317) use(1299) case(1017) }
{ sampl(1606) size(1419) use(1276) }
{ use(976) code(926) identifi(902) }
{ estim(2440) model(1874) function(577) }
{ model(3404) distribut(989) bayesian(671) }
{ can(774) often(719) complex(702) }
{ imag(1947) propos(1133) code(1026) }
{ inform(2794) health(2639) internet(1427) }
{ system(1976) rule(880) can(841) }
{ imag(1057) registr(996) error(939) }
{ bind(1733) structur(1185) ligand(1036) }
{ sequenc(1873) structur(1644) protein(1328) }
{ method(1219) similar(1157) match(930) }
{ imag(2830) propos(1344) filter(1198) }
{ imag(2675) segment(2577) method(1081) }
{ take(945) account(800) differ(722) }
{ studi(2440) review(1878) systemat(933) }
{ motion(1329) object(1292) video(1091) }
{ surgeri(1148) surgic(1085) robot(1054) }
{ framework(1458) process(801) describ(734) }
{ problem(2511) optim(1539) algorithm(950) }
{ chang(1828) time(1643) increas(1301) }
{ learn(2355) train(1041) set(1003) }
{ clinic(1479) use(1117) guidelin(835) }
{ algorithm(1844) comput(1787) effici(935) }
{ data(1714) softwar(1251) tool(1186) }
{ design(1359) user(1324) use(1319) }
{ control(1307) perform(991) simul(935) }
{ model(2220) cell(1177) simul(1124) }
{ care(1570) inform(1187) nurs(1089) }
{ general(901) number(790) one(736) }
{ method(984) reconstruct(947) comput(926) }
{ search(2224) databas(1162) retriev(909) }
{ featur(1941) imag(1645) propos(1176) }
{ howev(809) still(633) remain(590) }
{ studi(1410) differ(1259) use(1210) }
{ risk(3053) factor(974) diseas(938) }
{ perform(999) metric(946) measur(919) }
{ system(1050) medic(1026) inform(1018) }
{ model(2341) predict(2261) use(1141) }
{ compound(1573) activ(1297) structur(1058) }
{ perform(1367) use(1326) method(1137) }
{ health(3367) inform(1360) care(1135) }
{ model(3480) simul(1196) paramet(876) }
{ monitor(1329) mobil(1314) devic(1160) }
{ ehr(2073) health(1662) electron(1139) }
{ state(1844) use(1261) util(961) }
{ research(1218) medic(880) student(794) }
{ patient(2837) hospit(1953) medic(668) }
{ medic(1828) order(1363) alert(1069) }
{ cost(1906) reduc(1198) effect(832) }
{ gene(2352) biolog(1181) express(1162) }
{ data(3008) multipl(1320) sourc(1022) }
{ first(2504) two(1366) second(1323) }
{ activ(1138) subject(705) human(624) }
{ time(1939) patient(1703) rate(768) }
{ patient(1821) servic(1111) care(1106) }
{ use(2086) technolog(871) perceiv(783) }
{ can(981) present(881) function(850) }
{ analysi(2126) use(1163) compon(1037) }
{ health(1844) social(1437) communiti(874) }
{ structur(1116) can(940) graph(676) }
{ high(1669) rate(1365) level(1280) }
{ use(1733) differ(960) four(931) }
{ drug(1928) target(777) effect(648) }
{ implement(1333) system(1263) develop(1122) }
{ survey(1388) particip(1329) question(1065) }
{ decis(3086) make(1611) patient(1517) }
{ process(1125) use(805) approach(778) }
{ activ(1452) weight(1219) physic(1104) }
{ method(1969) cluster(1462) data(1082) }
{ method(2212) result(1239) propos(1039) }
{ detect(2391) sensit(1101) algorithm(908) }

Resumo

JECTIVE: Pulmonary disorders are frequently characterized by the presence of adventitious sounds added to the breathing or base lung sound (BLS). The aim of this work was to assess the features of BLS in extrinsic allergic alveolitis (EAA) patients in comparison to healthy subjects, applying linear and nonlinear analysis techniques.METHODS: We investigated the multichannel lung sounds on the posterior chest of 16 females, 8 healthy and 8 EAA patients, when breathing at 1.5 L/s. BLS linear features were obtained from the power spectral density (PSD) while nonlinear features were extracted by the concepts of irregularity and complexity, i.e., spectral, sample and multiscale entropy.RESULTS: The results demonstrated that spectral percentiles of BLS were lower in EAA patients than in healthy subjects but statistical significance (p<0.05) was obtained only for expiration at the left apical and both basal regions. Also, the maximum amplitude of the PSD in patients reached statistical significance (p <0.05) for the expiratory phase at basal regions. In the case of nonlinear techniques, significant lower values (p <0.05) were obtained for EAA patients during both respiratory phases at left apical and both basal regions.CONCLUSION: In conclusion, we found that BLS in chronic EAA patients is characterized by lower spectral percentiles, lower irregularity and lower complexity than in healthy subjects suggesting the feasibility of its clinical usefulness by screening its temporal alteration.

Resumo Limpo

jectiv pulmonari disord frequent character presenc adventiti sound ad breath base lung sound bls aim work assess featur bls extrins allerg alveol eaa patient comparison healthi subject appli linear nonlinear analysi techniquesmethod investig multichannel lung sound posterior chest femal healthi eaa patient breath ls bls linear featur obtain power spectral densiti psd nonlinear featur extract concept irregular complex ie spectral sampl multiscal entropyresult result demonstr spectral percentil bls lower eaa patient healthi subject statist signific p obtain expir left apic basal region also maximum amplitud psd patient reach statist signific p expiratori phase basal region case nonlinear techniqu signific lower valu p obtain eaa patient respiratori phase left apic basal regionsconclus conclus found bls chronic eaa patient character lower spectral percentil lower irregular lower complex healthi subject suggest feasibl clinic use screen tempor alter

Resumos Similares

Comput Methods Programs Biomed - Linear and nonlinear analysis of normal and CAD-affected heart rate signals. ( 0,841477499971804 )
Methods Inf Med - Prediction of countershock success in patients using the autoregressive spectral estimation. ( 0,833067827981644 )
Methods Inf Med - Classification of sleep stages using multi-wavelet time frequency entropy and LDA. ( 0,831908747636888 )
J Clin Monit Comput - A quantitative EEG method for detecting post clamp changes during carotid endarterectomy. ( 0,822844906958634 )
Comput. Biol. Med. - Current methods in electrocardiogram characterization. ( 0,82064006253746 )
Med Biol Eng Comput - Classification of surface electromyographic signals by means of multifractal singularity spectrum. ( 0,812121551827374 )
J Med Syst - Analysis of infant cry through weighted linear prediction cepstral coefficients and Probabilistic Neural Network. ( 0,810172125493773 )
Methods Inf Med - Long-term correlations and complexity analysis of the heart rate variability signal during sleep. Comparing normal and pathologic subjects. ( 0,810006026277169 )
Comput Methods Programs Biomed - Epileptic seizure classification in EEG signals using second-order difference plot of intrinsic mode functions. ( 0,809280788366158 )
Int J Neural Syst - Detection of driving fatigue by using noncontact EMG and ECG signals measurement system. ( 0,807802016870963 )
Artif Intell Med - Comparative study of approximate entropy and sample entropy robustness to spikes. ( 0,805901934584179 )
Comput Methods Programs Biomed - Automated sleep stage identification system based on time-frequency analysis of a single EEG channel and random forest classifier. ( 0,805836517786307 )
Int J Neural Syst - Application of empirical mode decomposition (emd) for automated detection of epilepsy using EEG signals. ( 0,801425090996454 )
Comput Methods Programs Biomed - Like/dislike analysis using EEG: determination of most discriminative channels and frequencies. ( 0,800625632997494 )
Comput. Biol. Med. - Estimating cognitive workload using wavelet entropy-based features during an arithmetic task. ( 0,798293495236251 )
Comput Math Methods Med - Higher-order spectrum in understanding nonlinearity in EEG rhythms. ( 0,796220066226944 )
Comput Math Methods Med - An automated optimal engagement and attention detection system using electrocardiogram. ( 0,793905304133989 )
Comput Methods Programs Biomed - Optimal channel selection for analysis of EEG-sleep patterns of neonates. ( 0,792491906774009 )
Comput. Biol. Med. - Binary symbolic dynamics classifies heart rate variability patterns linked to autonomic modulations. ( 0,788845070037642 )
IEEE J Biomed Health Inform - Analysis of the Chaotic Characteristics of Human Colonic Activities and Comparison of Healthy Participants to Costive Subjects. ( 0,785991762285949 )
Med Biol Eng Comput - Heart rate variability and nonlinear dynamic analysis in patients with stress-induced cardiomyopathy. ( 0,785064355544961 )
Med Biol Eng Comput - Cross-correlation of EEG frequency bands and heart rate variability for sleep apnoea classification. ( 0,78331426185722 )
Comput Methods Programs Biomed - Broadband noise suppression and feature identification of ECG waveforms using mathematical morphology and embedding theorem. ( 0,780376742163344 )
J Med Syst - Diagnosis of epilepsy from electroencephalography signals using multilayer perceptron and Elman Artificial Neural Networks and Wavelet Transform. ( 0,779041338296029 )
Artif Intell Med - Automatic sleep scoring: a search for an optimal combination of measures. ( 0,778203137721744 )
Med Biol Eng Comput - Voiceless Arabic vowels recognition using facial EMG. ( 0,774968139013512 )
J Biomed Inform - A general framework for time series data mining based on event analysis: application to the medical domains of electroencephalography and stabilometry. ( 0,771149015993298 )
Comput Methods Programs Biomed - Biomedical time series clustering based on non-negative sparse coding and probabilistic topic model. ( 0,77030317565243 )
Comput. Biol. Med. - A fixed point algorithm for extracting the atrial activity in the frequency domain. ( 0,767398125155202 )
Comput Methods Programs Biomed - Averaging in vitro cardiac field potential recordings obtained with microelectrode arrays. ( 0,76733169184353 )
J Clin Monit Comput - Impaired cerebrovascular reactivity after acute traumatic brain injury can be detected by wavelet phase coherence analysis of the intracranial and arterial blood pressure signals. ( 0,76692891799149 )
Comput Math Methods Med - Probabilistic source separation for robust fetal electrocardiography. ( 0,766239883935787 )
Comput Methods Programs Biomed - Automatic heart sound detection in pediatric patients without electrocardiogram reference via pseudo-affine Wigner-Ville distribution and Haar wavelet lifting. ( 0,764611957372155 )
IEEE J Biomed Health Inform - EEG activity during movement planning encodes upcoming peak speed and acceleration and improves the accuracy in predicting hand kinematics. ( 0,76303080154231 )
Comput Methods Programs Biomed - QRS detection using S-Transform and Shannon energy. ( 0,762270822466653 )
Comput Methods Programs Biomed - Analysis of normal and epileptic seizure EEG signals using empirical mode decomposition. ( 0,759142327259713 )
Comput Math Methods Med - Novel application of a multiscale entropy index as a sensitive tool for detecting subtle vascular abnormalities in the aged and diabetic. ( 0,756238164772419 )
J Clin Monit Comput - Morphological analysis of peripheral arterial signals in Takayasu's arteritis. ( 0,754829962890717 )
Comput Methods Programs Biomed - An R-peak detection method that uses an SVD filter and a search back system. ( 0,753892055399321 )
Comput. Biol. Med. - A novel electrocardiogram parameterization algorithm and its application in myocardial infarction detection. ( 0,75359872231595 )
Med Biol Eng Comput - Directional dual-tree complex wavelet packet transforms for processing quadrature signals. ( 0,75353514672669 )
IEEE J Biomed Health Inform - Single Trial Visual Evoked Potential Extraction using Partial Least Squares-based Approach. ( 0,752680794833409 )
Comput Methods Programs Biomed - Epileptic seizure detection in EEGs signals using a fast weighted horizontal visibility algorithm. ( 0,752018294445329 )
Comput. Biol. Med. - Analysis of heart rate variability using fuzzy measure entropy. ( 0,751070250206776 )
J Med Syst - Classification of arrhythmia using hybrid networks. ( 0,750182336505813 )
Med Biol Eng Comput - QRS subtraction for atrial electrograms: flat, linear and spline interpolations. ( 0,749571869640512 )
Comput. Biol. Med. - Comparison of different EEG features in estimation of hypnosis susceptibility level. ( 0,749498620150671 )
J Med Syst - Analysis of spike waves in epilepsy using Hilbert-Huang transform. ( 0,747655076800948 )
Comput. Biol. Med. - Wavelet-based denoising method for real phonocardiography signal recorded by mobile devices in noisy environment. ( 0,74603473283087 )
Comput Math Methods Med - A wavelet transform based method to determine depth of anesthesia to prevent awareness during general anesthesia. ( 0,745161591463339 )
Comput Math Methods Med - Evaluation of EEG features in decoding individual finger movements from one hand. ( 0,74379998291476 )
J Med Syst - Design and development of a heart rate variability analyzer. ( 0,743256884706421 )
Comput Methods Programs Biomed - Classifying depression patients and normal subjects using machine learning techniques and nonlinear features from EEG signal. ( 0,740550654347667 )
J Med Syst - Employment and comparison of different Artificial Neural Networks for epilepsy diagnosis from EEG signals. ( 0,739011782886942 )
Methods Inf Med - Segmented Poincar? plot analysis for risk stratification in patients with dilated cardiomyopathy. ( 0,738704181715287 )
Med Biol Eng Comput - Reconstruction of gastric slow wave from finger photoplethysmographic signal using radial basis function neural network. ( 0,737619814819164 )
Med Biol Eng Comput - Multivariate short-term heart rate variability: a pre-diagnostic tool for screening heart disease. ( 0,736663387426956 )
J Clin Monit Comput - Identification of apnea during respiratory monitoring using support vector machine classifier: a pilot study. ( 0,736254540215267 )
J Clin Monit Comput - Respiratory change in ECG-wave amplitude is a reliable parameter to estimate intravascular volume status. ( 0,735005840943607 )
Comput. Biol. Med. - Baseline characteristics of cervical auscultation signals during various head maneuvers. ( 0,733935752573643 )
Med Biol Eng Comput - Characteristics of the swallowing sounds recorded in the ear, nose and on trachea. ( 0,732122058310131 )
Comput Methods Programs Biomed - QRS detection based on wavelet coefficients. ( 0,731931372629348 )
J Telemed Telecare - ECG telemonitoring during home-based cardiac rehabilitation in heart failure patients. ( 0,731887871677444 )
IEEE J Biomed Health Inform - Sleep and wake classification with actigraphy and respiratory effort using dynamic warping. ( 0,731726801964865 )
Comput Math Methods Med - A novel automatic detection system for ECG arrhythmias using maximum margin clustering with immune evolutionary algorithm. ( 0,73056001953817 )
Comput Math Methods Med - The analysis of surface EMG signals with the wavelet-based correlation dimension method. ( 0,728036332365544 )
J Med Syst - A new QRS detection method using wavelets and artificial neural networks. ( 0,725744252362874 )
Comput Methods Programs Biomed - iGAIT: an interactive accelerometer based gait analysis system. ( 0,724487736170995 )
Comput. Biol. Med. - Automatic classification of infant sleep based on instantaneous frequencies in a single-channel EEG signal. ( 0,724374689543495 )
J Med Syst - Determining the appropriate amount of anesthetic gas using DWT and EMD combined with neural network. ( 0,723098028982113 )
Comput Methods Programs Biomed - Increasing sensitivity in the measurement of heart rate variability: the method of non-stationary RR time-frequency analysis. ( 0,721737844189875 )
Med Biol Eng Comput - The application of Hilbert-Huang transform in the analysis of muscle fatigue during cyclic dynamic contractions. ( 0,71964010235901 )
Comput Methods Programs Biomed - Automatic moment segmentation and peak detection analysis of heart sound pattern via short-time modified Hilbert transform. ( 0,719029153002558 )
Med Biol Eng Comput - Modeling the relationship between Higuchi's fractal dimension and Fourier spectra of physiological signals. ( 0,717015994108515 )
Comput Math Methods Med - Analysis of visual appearance of retinal nerve fibers in high resolution fundus images: a study on normal subjects. ( 0,716535923618715 )
Int J Neural Syst - Application of higher order cumulant features for cardiac health diagnosis using ECG signals. ( 0,716160597479656 )
Methods Inf Med - Robust detection of sleep apnea from Holter ECGs. Joint assessment of modulations in QRS amplitude and respiratory myogram interference. ( 0,714349769132974 )
Med Biol Eng Comput - High-resolution esophageal long-term ECG allows detailed atrial wave morphology analysis in case of atrial ectopic beats. ( 0,713073416243326 )
Neural Comput - Delay differential analysis of electroencephalographic data. ( 0,711449433286287 )
Comput Methods Programs Biomed - Feature extraction of the first difference of EMG time series for EMG pattern recognition. ( 0,711002513160934 )
Comput. Biol. Med. - Characteristic time scales of electroencephalograms of narcoleptic patients and healthy controls. ( 0,709950553546151 )
Int J Neural Syst - Application of intrinsic time-scale decomposition (ITD) to EEG signals for automated seizure prediction. ( 0,709499087203794 )
J Med Syst - Analysis of repetitive flash stimulation frequencies and record periods to detect migraine using artificial neural network. ( 0,708199039820398 )
Comput Math Methods Med - Fetal ECG extraction from abdominal signals: a review on suppression of fundamental power line interference component and its harmonics. ( 0,706736247505319 )
Med Biol Eng Comput - Characterization of QT and RR interval series during acute myocardial ischemia by means of recurrence quantification analysis. ( 0,703699580923522 )
J Clin Monit Comput - Non-stationarity of EEG during wakefulness and anaesthesia: advantages of EEG permutation entropy monitoring. ( 0,70291036522829 )
J Clin Monit Comput - Cardiac output assessed by non-invasive monitoring is associated with ECG changes in children with critical asthma. ( 0,702532621894461 )
Comput Methods Programs Biomed - Determination of ECoG information flow activity based on Granger causality and Hilbert transformation. ( 0,700239563590804 )
Comput. Biol. Med. - Prediction of pharmacologically induced baroreflex sensitivity from local time and frequency domain indices of R-R interval and systolic blood pressure signals obtained during deep breathing. ( 0,697744448558048 )
Comput Math Methods Med - Corticomuscular coherence analysis on hand movement distinction for active rehabilitation. ( 0,697036613513722 )
Comput. Biol. Med. - Empirical mode decomposition based ECG enhancement and QRS detection. ( 0,696837166152607 )
Methods Inf Med - Linear and fractal heart rate dynamics during sleep at high altitude. Investigation with textile technology. ( 0,692105937153299 )
J Clin Monit Comput - Power spectral analysis of plethysmographic pulse waveform in pregnant women. ( 0,690811079914535 )
J Clin Monit Comput - Multi-scale sample entropy of electroencephalography during sevoflurane anesthesia. ( 0,690749671755837 )
Comput. Biol. Med. - Non-uniform multivariate embedding to assess the information transfer in cardiovascular and cardiorespiratory variability series. ( 0,689882139382405 )
J Clin Monit Comput - ECG myogenic artifacts during clonic seizures: a disturbing (and interesting) finding. ( 0,68952849869144 )
J Med Syst - A wavelet transform based feature extraction and classification of cardiac disorder. ( 0,685879530702612 )
J Med Syst - The effect of multiscale PCA de-noising in epileptic seizure detection. ( 0,685338089560693 )
IEEE J Biomed Health Inform - Model based Estimation of Aortic and Mitral valves Opening and Closing Timings in Developing Human Fetuses. ( 0,684620346003789 )
Med Biol Eng Comput - Asymmetric properties of long-term and total heart rate variability. ( 0,684206718649935 )