{"title":"Applicability of the second derivative photoplethysmogram for non-invasive blood pressure estimation during exercise","authors":"I. Jeong, J. Finkelstein","doi":"10.1109/PAHCE.2013.6568322","DOIUrl":"https://doi.org/10.1109/PAHCE.2013.6568322","url":null,"abstract":"The objective of this pilot study is to propose an adaptable approach for automated generation of personalized estimation equations for blood pressure (BP) monitoring during home exercise. We investigated both population-based and individual-based bivariate correlations between blood pressure (BP) and possible BP predictors derived from electrocardiogram (ECG) and photoplethysmogram (PPG). The predicting parameters consisted of pulse transit time (PTT) obtained from characteristic points of original raw PPG signal, as well as the first and second PPG derivatives. The population-based parameter that showed the most prominent association with systolic blood pressure (SBP) was PTT Peak (R=-0.787, p<;0.01) for the all analyzed cases (N=45), and R-A - for all bivariate correlations (R=-0.805, p<;0.01). The individual-based results showed similar associations as in population-based analysis. However, the strength of association between BP and ECG/PPG derivatives varied from participant to participant. We concluded that automated generation of BP prediction equations should be based on different ECG/PPG derivatives in different persons depending on individualized bivariate analyses of all possible BP predictors.","PeriodicalId":151015,"journal":{"name":"2013 Pan American Health Care Exchanges (PAHCE)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124689273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Concept design for a novel confined-bacterial-based biosensor for water quality control","authors":"C. A. Hernández, L. Gaviria, S. Segura, J. Osma","doi":"10.1109/PAHCE.2013.6568257","DOIUrl":"https://doi.org/10.1109/PAHCE.2013.6568257","url":null,"abstract":"The care and protection of world resources propose nowadays new challenges and compromises, which require a rapid action to assure future availability. Constant efforts have been made to control changes that might affect life; continuous surveillance plays a key-role on environmental conservation and different methods had been used to determine the quality of such resources. The aim of the current research is the design of an easy to use, yet cheap, biosensor, based on electrical properties of different microorganisms, confined in a suitable microestructure.","PeriodicalId":151015,"journal":{"name":"2013 Pan American Health Care Exchanges (PAHCE)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129503172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Andres F. Ruiz O, Alberto López D, Denis Delisle R, A. L. Jutinico A, G. Díaz
{"title":"Design specifications for an upper limb robotic exoskeleton to be used in neurorehabilitation","authors":"Andres F. Ruiz O, Alberto López D, Denis Delisle R, A. L. Jutinico A, G. Díaz","doi":"10.1109/PAHCE.2013.6568256","DOIUrl":"https://doi.org/10.1109/PAHCE.2013.6568256","url":null,"abstract":"Recently, robotic exoskeletons have been developed for rehabilitating patients with stroke or who present motor disorders; Those systems are designed to aid or control the upper and lower limbs in movement and during physical therapy. This paper presents the specifications of design of an upper limb robotic exoskeleton to enhance the neuro-rehabilitation processes of motor disable people. It is presented the hardware required and simulations accomplished.","PeriodicalId":151015,"journal":{"name":"2013 Pan American Health Care Exchanges (PAHCE)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128425881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Wireless network for electrocardiography","authors":"Y. Ungson, M. Reyna","doi":"10.1109/PAHCE.2013.6568213","DOIUrl":"https://doi.org/10.1109/PAHCE.2013.6568213","url":null,"abstract":"The incidence of cardiovascular diseases is rising, so more people are requiring cardiac services. The private service is very expensive; hence the public health sector is exceeded by their capacity to accomplish this demand. The proposal to solve this problem is the implementation of a wireless network based on Bluetooth (BT) for recording, monitoring and analysis of electrocardiographic signals (ECG). Three surface electrodes are placed on the chest following standardized points of triangle of Einthoven. The signals measured by electrodes are carried to Arduino UNO card, which works as an instrumentation amplifier. Then ECG signal is sent by BT from Arduino Uno to a mobile device carried by the user, so he can send it to a workstation where the ECG is processed or analyzed by an expert. This proposal would help the health sector to improve the quality of their service in the care of patients with heart diseases; also costs of care would significantly decrease.","PeriodicalId":151015,"journal":{"name":"2013 Pan American Health Care Exchanges (PAHCE)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129183446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Titanium for biomedical application with radial graded porosity: Development of a novel compaction device","authors":"Y. Torres, P. Trueba, J. Pavón, J. A. Rodríguez","doi":"10.1109/PAHCE.2013.6568340","DOIUrl":"https://doi.org/10.1109/PAHCE.2013.6568340","url":null,"abstract":"Bone tissue damages due to traumas and degenerative diseases are potentially treatable by tissue engineering practice with metallic scaffolds. Surface and bulk properties of titanium are critical for implants success because they can be suitably tailored to mimic bone tissue, as can be done by producing porous materials by techniques like powder metallurgy (PM). Stress shielding problem is the most important biomechanical problem of titanium (Ti) implants for bone replacement. As consequence, there is always a risk of bone resorption and subsequent implant loosening and/or bone fracture. Development of porous Ti implants has been widely explored as a plausible alternative to address this issue during last decade [1].","PeriodicalId":151015,"journal":{"name":"2013 Pan American Health Care Exchanges (PAHCE)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129199130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Lower limb rehabilitation system controlled by robotics, electromyography surface and functional electrical stimulation","authors":"J. G. Patiño, E. Bravo, Jairo J. Pérez, V. Pérez","doi":"10.1109/PAHCE.2013.6568341","DOIUrl":"https://doi.org/10.1109/PAHCE.2013.6568341","url":null,"abstract":"The aim of this project is to present the development of a lower limb rehabilitation system, which uses active joint exoskeleton, a Functional Electrical Stimulation (FES) device, control algorithms and an electromyography surface module.","PeriodicalId":151015,"journal":{"name":"2013 Pan American Health Care Exchanges (PAHCE)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126297405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Montenegro, A. Leguizamón, D. Quiroga, C. Rojas
{"title":"Design, simulation and characterization of microfluidic system for human immunodeficiency virus detection","authors":"C. Montenegro, A. Leguizamón, D. Quiroga, C. Rojas","doi":"10.1109/PAHCE.2013.6568292","DOIUrl":"https://doi.org/10.1109/PAHCE.2013.6568292","url":null,"abstract":"Development of a specialized fluidic microsystem for HIV diagnosis from the reaction dependent of the affinity antigen-antibody. Based on knowledge about virus detection in laboratory, we pretend to decrease time spent to obtain results. In a first phase, this device will have a filtering zone, provided of small canals, causing that only specific cells could reach the next phase of membrane destruction for virus extraction; finally, specialized chemical sensors will react with these compounds, and it will show a colored signal to indicate diagnosis.","PeriodicalId":151015,"journal":{"name":"2013 Pan American Health Care Exchanges (PAHCE)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121110654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Santana, A. Garcia, J. Perez, L. Hoyos, V. Martínez, J. Bustamante
{"title":"Nitrogen, potassium and aluminum doped carbon nanotubes for atheroma-lipoproteins interaction on atherosclerosis treatment","authors":"C. Santana, A. Garcia, J. Perez, L. Hoyos, V. Martínez, J. Bustamante","doi":"10.1109/PAHCE.2013.6568282","DOIUrl":"https://doi.org/10.1109/PAHCE.2013.6568282","url":null,"abstract":"The principal objective in this research is the study of surface interaction between lipoproteins and different developed coatings of pristine MWCNT and Doped MWCNT with nitrogen, aluminium or potassium functionalized in a phosphorylcholine matrix, looking for a relationship in the therapeutic management of atherosclerotic disease.","PeriodicalId":151015,"journal":{"name":"2013 Pan American Health Care Exchanges (PAHCE)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125326503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Vera, R. Medina, A. Bravo, A. Del Mar, O. Acosta, M. Garreau
{"title":"Cardiac function quantification from multislice computerized tomography images","authors":"M. Vera, R. Medina, A. Bravo, A. Del Mar, O. Acosta, M. Garreau","doi":"10.1109/PAHCE.2013.6568338","DOIUrl":"https://doi.org/10.1109/PAHCE.2013.6568338","url":null,"abstract":"The aim of this paper is to propose a technique to estimate several descriptors associated with the left ventricular function. The 3-D automatic segmentation of left ventricle (LV), in multi-slice CT cardiac images, was generated. The estimated descriptors were: end-diastolic volume, end-systolic volume, stroke volume, ejection fraction and cardiac output. Each considered image was processed using the following stages: preprocessing, LV segmentation and descriptors estimation. During the preprocessing stage a similarity enhancement based on a filtering technique, was applied and a learning paradigm for estimating two planes that isolate the LV from surrounding structures was used. The automatic LV segmentation was generated using a level set algorithm. The aforementioned descriptors were estimated from the LV segmentation. The percentage relative error was used to compare the results obtained with respect to those generated manually by a cardiologist. The descriptors have errors less than 5%, however, it is suggested to perform a more complete validation.","PeriodicalId":151015,"journal":{"name":"2013 Pan American Health Care Exchanges (PAHCE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133940703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
F. Gamino, I. Bazán, A. Ramírez, A. Ramos, C. Negreira
{"title":"Evaluation of high-resolution spectral estimation techniques in tissue thermal characterization under noisy broadband conditions","authors":"F. Gamino, I. Bazán, A. Ramírez, A. Ramos, C. Negreira","doi":"10.1109/PAHCE.2013.6568347","DOIUrl":"https://doi.org/10.1109/PAHCE.2013.6568347","url":null,"abstract":"The spectral analysis techniques has been widely used to extract information about certain signals and the process in which those are generated. Ultrasonic (US) signal acquired from biological tissues are a particular case of that. Spectral analysis has been used to extract information from US signal related to biological tissue condition, mainly related with the internal scattering structure distribution and regularity. High-resolution spectral analysis techniques are applied to determine pathological characteristics that could indicate the presence of disease in the tissue. Some small changes in harmonics location could be drastically affected by the presence of noise in the analyzed signal. In this work, an evaluation of two parametric HR spectral analysis techniques is performed, first applied to signals acquired from a biological tissue phantom in a temperature range from 21°C to 45°C. A second evaluation was performed, considering simulated US signals, which were added with three different levels of SNR, and then they were analyzed with two parametric methods, which present variations in the error estimated for different noise level conditions. But the general behavior is a smaller error when noise decreases.","PeriodicalId":151015,"journal":{"name":"2013 Pan American Health Care Exchanges (PAHCE)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132350407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}