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Rodríguez-Pombo L, Carou-Senra P, Rodríguez-Martínez E, Januskaite P, Rial C, Félix P, Alvarez-Lorenzo C, Basit AW, Goyanes A. Customizable orodispersible films: Inkjet printing and data matrix encoding for personalized hydrocortisone dosing. Int J Pharm 2024; 655:124005. [PMID: 38493841 DOI: 10.1016/j.ijpharm.2024.124005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 03/08/2024] [Accepted: 03/14/2024] [Indexed: 03/19/2024]
Abstract
The aim of this study was to exploit the versatility of inkjet printing to develop flexible doses of drug-loaded orodispersible films that encoded information in a data matrix pattern, and to introduce a specialised data matrix-generator software specifically focused on the healthcare sector. Pharma-inks (drug-loaded inks) containing hydrocortisone (HC) were developed and characterised based on their rheological properties and drug content. Different strategies were investigated to improve HC solubility: formation of β-cyclodextrin complexes, Soluplus® based micelles, and the use of co-solvent systems. The software automatically adapted the data matrix size and identified the number of layers for printing. HC content deposited in each film layer was measured, and it was found that the proportion of co-solvent used directly affected the drug solubility and simultaneously played a role in the modification of the viscosity and surface tension of the inks. The formation of β-cyclodextrin complexes improved the drug quantity deposited in each layer. On the contrary, micelle-based inks were not suitable for printing. Orodispersible films containing flexible and low doses of personalised HC were successfully prepared, and the development of a code generator software oriented to medical use provided an additional, innovative, and revolutionary advantage to personalised medicine safety and accessibility.
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Affiliation(s)
- Lucía Rodríguez-Pombo
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma (GI-1645), Facultad de Farmacia, Instituto de Materiales (iMATUS) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Paola Carou-Senra
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma (GI-1645), Facultad de Farmacia, Instituto de Materiales (iMATUS) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Erea Rodríguez-Martínez
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma (GI-1645), Facultad de Farmacia, Instituto de Materiales (iMATUS) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Patricija Januskaite
- Department of Pharmaceutics, UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK
| | - Carlos Rial
- FABRX Ltd., Henwood House, Henwood, Ashford, Kent TN24 8DH, UK; FABRX Artificial Intelligence, Carretera de Escairón, 14, Currelos (O Saviñao) CP 27543, Spain
| | - Paulo Félix
- CiTIUS, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Carmen Alvarez-Lorenzo
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma (GI-1645), Facultad de Farmacia, Instituto de Materiales (iMATUS) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Abdul W Basit
- Department of Pharmaceutics, UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK; FABRX Ltd., Henwood House, Henwood, Ashford, Kent TN24 8DH, UK; FABRX Artificial Intelligence, Carretera de Escairón, 14, Currelos (O Saviñao) CP 27543, Spain.
| | - Alvaro Goyanes
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma (GI-1645), Facultad de Farmacia, Instituto de Materiales (iMATUS) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; Department of Pharmaceutics, UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK; FABRX Ltd., Henwood House, Henwood, Ashford, Kent TN24 8DH, UK; FABRX Artificial Intelligence, Carretera de Escairón, 14, Currelos (O Saviñao) CP 27543, Spain.
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Hammouri ZAA, Mier PR, Félix P, Mansournia MA, Huelin F, Casals M, Matabuena M. Uncertainty Quantification in Medicine Science: The Next Big Step. Arch Bronconeumol 2023; 59:760-761. [PMID: 37532646 DOI: 10.1016/j.arbres.2023.07.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 07/16/2023] [Accepted: 07/17/2023] [Indexed: 08/04/2023]
Affiliation(s)
- Ziad Akram Ali Hammouri
- Centro Singular de Investigación en Tecnoloxías Intelixentes (CiTIUS), Universidad de Santiago de Compostela, Spain
| | - Pablo Rodríguez Mier
- Heidelberg University, Faculty of Medicine, and Heidelberg University Hospital, Institute for Computational Biomedicine, Bioquant, Heidelberg, Germany
| | - Paulo Félix
- Centro Singular de Investigación en Tecnoloxías Intelixentes (CiTIUS), Universidad de Santiago de Compostela, Spain
| | - Mohammad Ali Mansournia
- Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran; Sports Medicine Research Centre, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Martí Casals
- Sport and Physical Activity Studies Centre (CEEAF), Faculty of Medicine, University of Vic-Central University of Catalonia (UVic-UCC), Spain; Sport Performance Analysis Research Group, University of Vic-Central University of Catalonia (UVic-UCC), Barcelona, Spain; National Institute of Physical Education of Catalonia (INEFC), University of Barcelona, Barcelona, Spain
| | - Marcos Matabuena
- Centro Singular de Investigación en Tecnoloxías Intelixentes (CiTIUS), Universidad de Santiago de Compostela, Spain.
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Matabuena M, Félix P, Hammouri ZAA, Mota J, Del Pozo Cruz B. Physical activity phenotypes and mortality in older adults: a novel distributional data analysis of accelerometry in the NHANES. Aging Clin Exp Res 2022; 34:3107-3114. [PMID: 36183279 DOI: 10.1007/s40520-022-02260-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 09/15/2022] [Indexed: 11/01/2022]
Abstract
Physical activity is deemed critical to successful ageing. Despite evidence and progress, there is still a need to determine more precisely the direction, magnitude, intensity, and volume of physical activity that should be performed on a daily basis to effectively promote the health of individuals. This study aimed to assess the clinical validity of new physical activity phenotypes derived from a novel distributional functional analysis of accelerometer data in older adults. A random sample of participants aged between 65 and 80 years with valid accelerometer data from the National Health and Nutrition Examination Survey (NHANES) 2011-2014 was used. Five major clinical phenotypes were identified, which provided a greater sensitivity for predicting 5-year mortality and survival outcomes than age alone, and our results confirm the importance of moderate-to-vigorous physical activity. The new clinical physical activity phenotypes are a promising tool for improving patient prognosis and for directing to more targeted intervention planning, according to the principles of precision medicine. The use of distributional representations shows clear advantages over more traditional metrics to explore the effects of the full spectrum of the physical activity continuum on human health.
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Affiliation(s)
- Marcos Matabuena
- Centro Singular de Investigación en Tecnoloxías Intelixentes (CiTIUS), Universidad de Santiago de Compostela, Santiago de Compostela, Spain.
| | - Paulo Félix
- Centro Singular de Investigación en Tecnoloxías Intelixentes (CiTIUS), Universidad de Santiago de Compostela, Santiago de Compostela, Spain
| | - Ziad Akram Ali Hammouri
- Centro Singular de Investigación en Tecnoloxías Intelixentes (CiTIUS), Universidad de Santiago de Compostela, Santiago de Compostela, Spain
| | - Jorge Mota
- Research Center in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sports, University of Porto (FADEUP), Porto, Portugal.,Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal
| | - Borja Del Pozo Cruz
- Centre for Active and Healthy Ageing, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark.,Faculty of Education, University of Cádiz, Cádiz, Spain.,Biomedical Research and Innovation Institute of Cádiz (INiBICA) Research Unit, Puerta del Mar University Hospital, University of Cádiz, Cádiz, Spain.,Epidemiology of Physical Activity and Fitness Across the Lifespan (EPAFit) Research Group, Faculty of Education, University of Seville, Seville, Spain
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Matabuena M, Félix P, García-Meixide C, Gude F. Kernel machine learning methods to handle missing responses with complex predictors. Application in modelling five-year glucose changes using distributional representations. Comput Methods Programs Biomed 2022; 221:106905. [PMID: 35649295 DOI: 10.1016/j.cmpb.2022.106905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 05/11/2022] [Accepted: 05/22/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND AND OBJECTIVES Missing data is a ubiquitous problem in longitudinal studies due to the number of patients lost to follow-up. Kernel methods have enriched the machine learning field by successfully managing non-vectorial predictors, such as graphs, strings, and probability distributions, and have emerged as a promising tool for the analysis of complex data stemming from modern healthcare. This paper proposes a new set of kernel methods to handle missing data in the response variables. These methods will be applied to predict long-term changes in glycated haemoglobin (A1c), the primary biomarker used to diagnose and monitor the progression of diabetes mellitus, making emphasis on exploring the predictive potential of continuous glucose monitoring (CGM). METHODS We propose a new framework of non-linear kernel methods for testing statistical independence, selecting relevant predictors, and quantifying the uncertainty of the resultant predictive models. As a novelty in the clinical analysis, we used a distributional representation of CGM as a predictor and compared its performance with that of traditional diabetes biomarkers. RESULTS The results show that, after the incorporation of CGM information, predictive ability increases from R2=0.61 to R2=0.71. In addition, uncertainty analysis is useful for characterising some subpopulations where predictivity is worsened, and a more personalised clinical follow-up is advisable according to expected patient uncertainty in glucose values. CONCLUSIONS The proposed methods have proven to deal effectively with missing data. They also have the potential to improve the results of predictive tasks by including new complex objects as explanatory variables and modelling arbitrary dependence relations. The application of these methods to a longitudinal study of diabetes showed that the inclusion of a distributional representation of CGM data provides greater sensitivity in predicting five-year A1c changes than classical diabetes biomarkers and traditional CGM metrics.
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Affiliation(s)
- Marcos Matabuena
- CiTIUS (Centro Singular de Investigación en Tecnoloxías Intelixentes), Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain.
| | - Paulo Félix
- CiTIUS (Centro Singular de Investigación en Tecnoloxías Intelixentes), Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
| | | | - Francisco Gude
- Unidade de Epidemioloxía Clínica, Complexo Hospitalario Universidade de Santiago (CHUS), Travesía da Choupana, Santiago de Compostela 15706, Spain
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Otero A, Félix P, Márquez DG, García CA, Caffarena G. A fault-tolerant clustering algorithm for processing data from multiple streams. Inf Sci (N Y) 2022. [DOI: 10.1016/j.ins.2021.10.049] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Casimiro S, Gomes I, Almeida B, Alves P, Félix P, Vilhais G, Mansinho A, Dionísio M, Barbosa-Morais N, Costa L. Biological features of estrogen receptor-positive breast cancer with elevated RANK (TNFRSF11A) expression. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz095.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Teijeiro T, García CA, Castro D, Félix P. Abductive reasoning as a basis to reproduce expert criteria in ECG atrial fibrillation identification. Physiol Meas 2018; 39:084006. [DOI: 10.1088/1361-6579/aad7e4] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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9
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García CA, Otero A, Félix P, Presedo J, Márquez DG. Nonparametric estimation of stochastic differential equations with sparse Gaussian processes. Phys Rev E 2017; 96:022104. [PMID: 28950538 DOI: 10.1103/physreve.96.022104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Indexed: 06/07/2023]
Abstract
The application of stochastic differential equations (SDEs) to the analysis of temporal data has attracted increasing attention, due to their ability to describe complex dynamics with physically interpretable equations. In this paper, we introduce a nonparametric method for estimating the drift and diffusion terms of SDEs from a densely observed discrete time series. The use of Gaussian processes as priors permits working directly in a function-space view and thus the inference takes place directly in this space. To cope with the computational complexity that requires the use of Gaussian processes, a sparse Gaussian process approximation is provided. This approximation permits the efficient computation of predictions for the drift and diffusion terms by using a distribution over a small subset of pseudosamples. The proposed method has been validated using both simulated data and real data from economy and paleoclimatology. The application of the method to real data demonstrates its ability to capture the behavior of complex systems.
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Affiliation(s)
- Constantino A García
- Centro Singular de Investigación en Tecnoloxías da Información (CiTIUS), Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Abraham Otero
- Department of Information and Communications Systems Engineering, Universidad San Pablo CEU, 28668, Madrid, Spain
| | - Paulo Félix
- Centro Singular de Investigación en Tecnoloxías da Información (CiTIUS), Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Jesús Presedo
- Centro Singular de Investigación en Tecnoloxías da Información (CiTIUS), Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - David G Márquez
- Centro Singular de Investigación en Tecnoloxías da Información (CiTIUS), Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
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Abstract
Continuous followup of heart condition through long-term electrocardiogram monitoring is an invaluable tool for diagnosing some cardiac arrhythmias. In such context, providing tools for fast locating alterations of normal conduction patterns is mandatory and still remains an open issue. This paper presents a real-time method for adaptive clustering QRS complexes from multilead ECG signals that provides the set of QRS morphologies that appear during an ECG recording. The method processes the QRS complexes sequentially by grouping them into a dynamic set of clusters based on the information content of the temporal context. The clusters are represented by templates which evolve over time and adapt to the QRS morphology changes. Rules to create, merge, and remove clusters are defined along with techniques for noise detection in order to avoid their proliferation. To cope with beat misalignment, derivative dynamic time warping is used. The proposed method has been validated against the MIT-BIH Arrhythmia Database and the AHA ECG Database showing a global purity of 98.56% and 99.56%, respectively. Results show that our proposal not only provides better results than previous offline solutions but also fulfills real-time requirements.
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Álvarez MR, Félix P, Cariñena P. Discovering metric temporal constraint networks on temporal databases. Artif Intell Med 2013; 58:139-54. [DOI: 10.1016/j.artmed.2013.03.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Revised: 03/06/2013] [Accepted: 03/17/2013] [Indexed: 10/26/2022]
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Otero A, Félix P, Presedo J, Zamarrón C. An evaluation of indexes as support tools in the diagnosis of sleep apnea. Ann Biomed Eng 2012; 40:1825-34. [PMID: 22374322 DOI: 10.1007/s10439-012-0536-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Accepted: 02/21/2012] [Indexed: 01/05/2023]
Abstract
This article evaluates several indexes as support tools to diagnose patients with Sleep Apnea-Hypopnea Syndrome (SAHS). Some of these indexes, such as the Apnea-Hypopnea Index, have been standardized and studied in depth in the literature. Other indexes are used extensively in the reports that commercial polysomnographs generate. However, they have not been studied in detail and clinicians have no standardized guidelines for interpreting them. Examples are the mean and maximum duration of apneas and hypopneas. Finally, several novel indexes proposed by the authors are also evaluated. To evaluate the indexes, we have used a database of 274 patients who have undergone a polysomnographic test. Several feature selection techniques were used to assess the capability of each index to discriminate between healthy and SAHS patients. The capability of the indexes for diagnosing the patients was analyzed by using decision trees which were trained using each index individually, and all the indexes together. Our results suggest that some indexes which are often present in the reports of commercial polysomnographs provide little or no information. On the other hand, other indexes that are usually not considered have a great capability to discern between SAHS and control patients.
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Affiliation(s)
- Abraham Otero
- Department of Information and Communications Systems Engineering, University San Pablo CEU, Boadilla del Monte, Km 5,300, Urbanización Montepríncipe, 28668 Madrid, Spain.
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Otero A, Félix P, Barro S, Zamarrón C. A structural knowledge-based proposal for the identification and characterization of apnoea episodes. Appl Soft Comput 2012. [DOI: 10.1016/j.asoc.2011.08.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Teijeiro T, Félix P, Presedo J, Gándara A. SERVANDO: an extensible platform for home-care services providing. Annu Int Conf IEEE Eng Med Biol Soc 2011; 2011:8191-8194. [PMID: 22256243 DOI: 10.1109/iembs.2011.6092020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
This paper presents an extensible distributed platform that aims to speed up the development of personalized telemedicine systems, dealing with a series of recurrent problems in this kind of system, particularly: (1) functionality encapsulation and reuse in a set of services; (2) communications between the patient's home and the hospital, through a flexible scheme for bidirectional message exchange; and (3) the interaction between patients and the system. Home supervision is carried out through last generation smartphones. To date, the platform has been used for the follow-up of patients with COPD and cardiovascular diseases.
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Affiliation(s)
- T Teijeiro
- Centro de Investigación en Tecnoloxías da Información, 15782, Universidade de Santiago de Compostela, Spain.
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Lado MJ, Vila XA, Rodríguez-Liñares L, Méndez AJ, Olivieri DN, Félix P. Detecting sleep apnea by heart rate variability analysis: assessing the validity of databases and algorithms. J Med Syst 2009; 35:473-81. [PMID: 20703543 DOI: 10.1007/s10916-009-9383-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2009] [Accepted: 09/23/2009] [Indexed: 10/20/2022]
Abstract
Obstructive sleep apnea (OSA) is a serious disorder caused by intermittent airway obstruction which may have dangerous impact on daily living activities. Heart rate variability (HRV) analysis could be used for diagnosing OSA, since this disease affects HRV during sleep. In order to validate different algorithms developed for detecting OSA employing HRV analysis, several public or proprietary data collections have been employed for different research groups. However, for validation purposes, it is obvious and evident the lack of a common standard database, worldwide recognized and accepted by the scientific community. In this paper, different algorithms employing HRV analysis were applied over diverse public and proprietary databases for detecting OSA, and the outcomes were validated in terms of a statistical analysis. Results indicate that the use of a specific database may strongly affect the performance of the algorithms, due to differences in methodologies of processing. Our results suggest that researchers must strongly take into consideration the database used when quoting their results, since selected cases are highly database dependent and would bias conclusions.
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Affiliation(s)
- María J Lado
- Department of Computer Science, University of Vigo, Campus As Lagoas, Ourense, Spain.
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Otero A, Félix P, Barro S, Palacios F. Addressing the flaws of current critical alarms: a fuzzy constraint satisfaction approach. Artif Intell Med 2009; 47:219-38. [PMID: 19796924 DOI: 10.1016/j.artmed.2009.08.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2008] [Revised: 08/12/2009] [Accepted: 08/28/2009] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Threshold alarms, the support supplied by commercial monitoring devices to supervise the signs that pathologies produce over physiological variables, generate a large amount of false positives, owing to the high number of artifacts in monitoring signals, and they are not capable of satisfactorily representing and identifying all monitoring criteria used by healthcare staff. The lack of an adequate support for monitoring the evolution of physical variables prevents the suitable exploitation of the information obtained when monitoring critical patients. This work proposes a solution for designing intelligent alarms capable of addressing the flaws and limitations of threshold alarms. MATERIALS AND METHODS The solution proposed is based on the multivariable fuzzy temporal profile (MFTP) model, a formal model for describing certain monitoring criteria as a set of morphologies defined over the temporal evolution of the patient's physiological variables, and a set of relations between them. The MFTP model represents these morphologies through a network of fuzzy constraints between a set of points in the evolution of the variables which the physician considers especially relevant. We also provide a knowledge acquisition tool, TRACE, with which clinical staff can design and edit alarms based on the MFTP model. RESULTS Sixteen alarms were designed using the MFTP model; these were capable of supervising monitoring criteria that could be satisfactorily supervised with commercial monitoring devices. The alarms were validated over a total of 196h of recordings of physiological variables from 78 different patients admitted to an intensive care unit. Of the 912 alarm triggerings, only 7% were false positives. A study of the usability of the tool TRACE was also carried out. After a brief training seminar, five physicians and four nurses designed a number of alarms with this tool. They were then asked to fill in the standard System Usability Scale test. The average score was 68.2. CONCLUSION The proposal presented herein for describing monitoring criteria, comprising the MFTP model and TRACE, permits the supervision of monitoring criteria that cannot be represented by means of thresholds, and makes it possible to construct alarms that give a rate of false positives far below that for threshold alarms.
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Affiliation(s)
- Abraham Otero
- Department of Software and Knowledge Engineering, University San Pablo CEU, 28668 Madrid, Spain.
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Teijeiro T, Tarascó M, Félix P, Presedo JM. A home-care PDA-based program for the management of COPD patients. Stud Health Technol Inform 2009; 150:439. [PMID: 19745350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
This paper proposes a PDA-based system, SERVANDO, for the home-care management of patients with COPD. In addition to making the supervision of such patients easier, the system permits the collection and structuring of large quantities of information on the evolution of COPD, allowing the application of data-mining techniques, which could open up new lines of research on this disease.
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Affiliation(s)
- Tomás Teijeiro
- Departamento de Electrónica e Computación, Universidade de Santiago de Compostela, Spain.
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Affiliation(s)
- P. Félix
- Department of Electronics and Computation, Faculty of Physics, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain. E-mail:
| | - S. Barro
- Department of Electronics and Computation, Faculty of Physics, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain. E-mail:
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Félix P. [Does laparoscopy reduce the rate of useless appendectomies?]. Ann Chir 1999; 53:544. [PMID: 10427854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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Félix P, Ventadoux Y, Guérineau JM. [Outpatient management, patient comfort and satisfaction of 100 consecutive inguinal hernias treated by Shouldice procedures with steel wire under local anesthesia]. Ann Chir 1999; 53:387-96. [PMID: 10389328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
This study evaluates postoperative patient comfort and satisfaction of 100 unilateral inguinal hernia repairs performed by Shouldice procedure with steel wire and local anesthesia. The day surgery management of 78% of patients, the low analgesic consumption, the resumption of normal activity after one week and a satisfaction index of nearly 100% are the main results of this study. The quality of these results is another argument confirming this technique as the "Gold Standard" of hernia repair.
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Affiliation(s)
- P Félix
- Service de Chirurgie Viscérale et Endocrinienne, Clinique Sainte-Thérèse, Villeneuve-sur-Lot
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Félix P, Guérineau JM, Balp V, Hanin V, Brossard G. [Duodenal duplication in adults. Laparoscopic treatment]. Ann Chir 1999; 52:1055-9. [PMID: 9951111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
The authors report a case of duodenal duplication in a adult. This lesion is rare. The clinical course is dominated by a risk of cancer. These lesions should be recognized to avoid a mutilating excision procedure in favour of a conservative procedure. The originality of this case is the laparoscopic approach which confirmed the diagnosis by the elective implantation on the first part of the duodenum. This approach, by mobilisation of the duodenum, allows excision by a very short laparotomy.
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Affiliation(s)
- P Félix
- Service de Chirurgie Viscérale et Endocrinienne, Clinique Sainte-Thérèse, Villeneuve-Sur-Lot
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Félix P. [Empty sella turcica. Diagnosis]. Rev Med Liege 1986; 41:872-8. [PMID: 3797909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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