Abstract：
OBJECTIVE: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.
journal_name
Methods Inf Medjournal_title
Methods of information in medicineauthors
Charleston-Villalobos S,Albuerne-Sanchez L,Gonzalez-Camarena R,Mejia-Avila M,Carrillo-Rodriguez G,Aljama-Corrales Tdoi
10.3414/ME12-01-0037subject
Has Abstractpub_date
2013-01-01 00:00:00pages
266-76issue
3eissn
0026-1270issn
2511-705Xpii
12-01-0037journal_volume
52pub_type
杂志文章abstract：:Many clinics are interested to use software packages in daily practice, but lack of integration of such packages seriously limits their scope. In practice this often entails switching between programs and interrupting the run of an individual program. A multi-task approach would not solve this problem as it would not ...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1992-02-01 00:00:00
abstract：:This article describes a system for the optimization of the prehospital assessment of emergency, in cases involving thoraco-abdominal complaints and consciousness problems. This assessment is performed by nurses on the basis of a telephone interview at ambulance dispatch centers. The system has a body of biomedical an...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1996-09-01 00:00:00
abstract：:During the last decade there has been a wealth of papers discussing the development of scoring systems in medicine, some of which have led to fully operational computer-aided diagnostic systems. In this paper we sketch the development of a simple scoring system for one of the more common rheumatic diseases, rheumatoid...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1991-01-01 00:00:00
abstract：:A problem of identifying the phase response curve of the myocardial pacemaker was investigated using a simple dynamic system model of cardiac arrhythmia. A hybrid optimization method of a genetic algorithm and a local optimization technique was employed to obtain a solution of the model fitting. The method was applied...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1997-12-01 00:00:00
abstract：OBJECTIVES:A major problem associated with the irradiation of thoracic and abdominal tumors is respiratory motion. In clinical practice, motion compensation approaches are frequently steered by low-dimensional breathing signals (e.g., spirometry) and patient-specific correspondence models, which are used to estimate th...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：10.3414/ME13-01-0137
更新日期：2014-01-01 00:00:00
abstract：OBJECTIVES:The National Cancer Institute (NCI) has developed the Common Data Elements (CDE) to serve as a controlled vocabulary of data descriptors for cancer research, to facilitate data interchange and inter-operability between cancer research centers. We evaluated CDE's structure to see whether it could represent th...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2006-01-01 00:00:00
abstract：BACKGROUND:Physical rehabilitation exergames (PREGs) are suitable for motivating patients toward completing treatments. Leap Motion (LM) is a motion sensor that may be useful for developing PREGs targeted at hands and fingers rehabilitation. Therefore, knowing the advantages and limitations of LM is relevant to underst...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：10.1055/s-0040-1715127
更新日期：2020-05-01 00:00:00
abstract：:A polygon-based graphical representation of laboratory test results using nonlinear scaling is described. It is argued that the nonlinearity of the scale and the use of colors in the representation facilitates interpretation of the test result in its relationship to the standard reference range and critical clinical d...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1991-04-01 00:00:00
abstract：:A new method is presented, different from usual methods, for the discussion of the results of computer ECG measurement programs, based on a new graphical evaluation method. The proposed "scatter-graphs" both highlight the main program results and facilitate the comparison between various wave-recognition algorithms. T...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1990-09-01 00:00:00
abstract：:This paper tries to compare six Health Informatics/Medical Informatics (HI/MI) programs by a number of attributes in standardized form. The different programs and their curricula were summarized at the 5th IMIA Working Conference on HI/MI Education at Heidelberg/Heilbronn. The presentation is condensed to a synoptical...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1994-06-01 00:00:00
abstract：OBJECTIVES:Due to the high complexity of structures and processes in health care, thorough systems analyses in health care run the risk of becoming very complex and difficult to handle. Therefore, we aimed to support systematic systems analysis in health care by developing a comprehensive framework that presents and de...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2002-01-01 00:00:00
abstract：OBJECTIVES:In this work, a cellular automaton software package for simulating different infectious diseases, storing the simulation results in a data warehouse system and analyzing the obtained results to generate prediction models as well as contingency plans, is proposed. The Brisbane H3N2 flu virus, which has been s...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：10.3414/ME09-02-0025
更新日期：2010-01-01 00:00:00
abstract：:In this paper the design and implementation of a decision support system for diabetes care is examined from an ethical perspective. It is noted that the system creates potential for enhancing the realization of the principle of autonomy through improved information to patients and participation by patients. However, t...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1999-12-01 00:00:00
abstract：OBJECTIVES:The interpretation of endoscopic findings by gastroenterologists is still a difficult and highly subjective task. Despite important developments such as chromo-endoscopy, pit pattern analysis, fluorescence imaging as well as narrow band imaging it still requires lots of experience and training with a certain...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：10.3414/ME9230
更新日期：2009-01-01 00:00:00
abstract：:Medical care and medical education can be supported more than in the past by using new tools and new premises for the effective linkage between bodies of knowledge and the use of that knowledge. The medical record can be converted from a source-oriented record to a problem-oriented record, enabling to trace not only w...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1989-11-01 00:00:00
abstract：OBJECTIVES:Biomedical applications, such as analysis and management of mass spectrometry proteomics experiments, involve heterogeneous platforms and knowledge, massive data sets, and complex algorithms. Main requirements of such applications are semantic modeling of the experiments and data analysis, as well as high pe...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2005-01-01 00:00:00
abstract：:Pathfinder is an expert system that assists surgical pathologists with the diagnosis of lymph-node diseases. The program is one of a growing number of normative expert systems that use probability and decision theory to acquire, represent, manipulate, and explain uncertain medical knowledge. In this article, we descri...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1992-06-01 00:00:00
abstract：:In this study, we attempted to discriminate the acceleration signal for horizontal level and stairway walking using wavelet-based fractal analysis method. The acceleration signal was measured close to the center of gravity of the body, while the subjects walked continuously in the corridor and up and down the stairs. ...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2000-06-01 00:00:00
abstract：BACKGROUND:Radiology reports are a permanent record of patient's health information often used in clinical practice and research. Reading radiology reports is common for clinicians and radiologists. However, it is laborious and time-consuming when the amount of reports to be read is large. Assisting clinicians to locat...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：10.1055/s-0039-1694992
更新日期：2019-09-01 00:00:00
abstract：OBJECTIVES:Epidemiologists are reformulating their classical approaches to diseases by considering various issues associated to "omics" areas and technologies. Traditional differences between epidemiology and genetics include background, training, terminologies, study designs and others. Public health and epidemiology ...
journal_title：Methods of information in medicine
pub_type： 杂志文章,评审
doi：
更新日期：2004-01-01 00:00:00
abstract：OBJECTIVES:As millions of consumers perform health information retrieval online, the mismatch between their terminology and the terminologies of the information sources could become a major barrier to successful retrievals. To address this problem, we studied the characteristics of consumer terminology for health infor...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2002-01-01 00:00:00
abstract：OBJECTIVES:The traditional techniques of data analysis are often not sufficient to characterize the complex dynamics of respiration. In this study the respiratory pattern variability was analyzed using symbolic dynamics. METHODS:A group of 20 patients on weaning trials from mechanical ventilation were studied at two d...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2004-01-01 00:00:00
abstract：:We present an algorithm for reconstructing the bifurcation structure of a dynamical system from time series. The method consists in finding a parameterized predictor function whose bifurcation structure is similar to that of the given system. Nonlinear autoregressive (NAR) models with polynomial terms are employed as ...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2000-06-01 00:00:00
abstract：:Although arterial mechanical properties have been evaluated using arterial input impedance, the relative difficulty in accurate flow measurement made the value of impedance somewhat limited. To develop an alternative method to evaluate arterial mechanical properties, we analyzed the aortic pressure (AoP)-radial arteri...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1997-12-01 00:00:00
abstract：:Surgical fluid replacement is a critical issue in medicine as the fluid volume excess or deficit can both complicate the patient's condition. Currently, the administration of fluid volume is carried out primarily based on the experience and expertise of the anaesthetist as there is no analytical method available to es...
journal_title：Methods of information in medicine
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doi：
更新日期：2001-03-01 00:00:00
abstract：:A compartmental model for the simulation of in-vivo insulin-like growth factor one (IGF-I) kinetics and metabolism is presented. The model is based on the concept that IGF binding proteins (IGFBPs) act as a reservoir for IGF-I in plasma, thereby restricting its access to the extravascular space. The model is divided i...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1994-12-01 00:00:00
abstract：OBJECTIVE:Clinical guidelines are special types of plans realized by collective agents. We provide an ontological theory of such plans that is designed to support the construction of a framework in which guideline-based information systems can be employed in the management of workflow in health care organizations. MET...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2006-01-01 00:00:00
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journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1993-02-01 00:00:00
abstract：OBJECTIVE:Information systems integration is hard, especially when semantic and business process interoperability requirements need to be met. To succeed, a unified methodology, approaching different aspects of systems architecture such as business, information, computational, engineering and technology viewpoints, has...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：10.3414/ME09-02-0012
更新日期：2010-01-01 00:00:00
abstract：:Artificial neural networks (ANNs) are compared to standard statistical methods for outcome prediction in biomedical problems. A general method for using genetic algorithms to "evolve" ANN architecture (EANN) is presented. Accuracy of logistic regression, a fully interconnected ANN, and an EANN for predicting depressio...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1998-09-01 00:00:00
