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Ming Dai, Xueliang Xiao, Xin Chen, Haoming Lin, Wanqing Wu, Siping Chen
With the increasing aging population as well as health concerns, chronic heart disease has become the focus of public attention. A comfortable, low-powered, and wearable electrocardiogram (ECG) system for continuously monitoring the elderly's ECG signals over several hours is important for preventing cardiovascular diseases. Traditional ECG monitoring apparatus is often inconvenient to carry, has many electrodes to attach to the chest, and has a high-power consumption. There is also a challenge to design an electrocardiograph that satisfies requirements such as comfort, confinement, and compactness...
October 14, 2016: Australasian Physical & Engineering Sciences in Medicine
Andreas K Triantafyllidis, Vassilis G Koutkias, Ioanna Chouvarda, Ilia Adami, Angelina Kouroubali, Nicos Maglaveras
Sensor-based health systems can often become difficult to use, extend and sustain. The authors propose a framework for designing sensor-based health monitoring systems aiming to provide extensible and usable monitoring services in the scope of pervasive patient care. The authors' approach relies on a distributed system for monitoring the patient health status anytime-anywhere and detecting potential health complications, for which healthcare professionals and patients are notified accordingly. Portable or wearable sensing devices measure the patient's physiological parameters, a smart mobile device collects and analyses the sensor data, a Medical Center system receives notifications on the detected health condition, and a Health Professional Platform is used by formal caregivers in order to review the patient condition and configure monitoring schemas...
September 2016: Healthcare Technology Letters
Lei Liu, Diming Zhang, Qian Zhang, Xing Chen, Gang Xu, Yanli Lu, Qingjun Liu
Volatile organic compounds (VOCs) detection is in high demand for clinic treatment, environment monitoring, and food quality control. Especially, VOCs from human exhaled breath can serve as significant biomarkers of some diseases, such as lung cancer and diabetes. In this study, a smartphone-based sensing system was developed for real-time VOCs monitoring using alternative current (AC) impedance measurement. The interdigital electrodes modified with zinc oxide (ZnO), graphene, and nitrocellulose were used as sensors to produce impedance responses to VOCs...
September 25, 2016: Biosensors & Bioelectronics
Richard F Neville, Samit K Gupta, David J Kuraguntla
OBJECTIVE: Prosthetic grafts used for lower extremity revascularization and dialysis access fail because of hyperplastic stenosis and thrombosis. Graft surveillance is advocated to monitor function; however, graft failure can occur between episodic examinations. An innovative sensor with wireless, microchip technology allows automated surveillance with assessment of graft function using a "cloud"-based algorithm. We performed proof-of-concept experiments with in vitro and in vivo models to assess the feasibility such a real-time graft surveillance system...
September 29, 2016: Journal of Vascular Surgery
Alexander von Luhmann, Heidrun Wabnitz, Tilmann Sander, Klaus-Robert Muller
OBJECTIVE: For the further development of the fields of telemedicine, neurotechnology and Brain-Computer Interfaces (BCI), advances in hybrid multimodal signal acquisition and processing technology are invaluable. Currently, there are no commonly available hybrid devices combining bio-electrical and bio-optical neurophysiological measurements (here Electroencephalography (EEG) and functional Near Infrared Spectroscopy (fNIRS)). Our objective was the design of such an instrument, and that in a miniaturized, customizable and wireless form...
September 9, 2016: IEEE Transactions on Bio-medical Engineering
Deepak Varandani, Khushboo Agarwal, Juergen Brugger, Bodh Raj Mehta
A commercial scanning thermal microscope has been upgraded to facilitate its use in estimating the radial thermal diffusivity of thin films close to room temperature. The modified setup includes a microcontroller driven microhotplate coupled with a Bluetooth module for wireless control. The microcontroller board (Arduino Leonardo) is used to generate a bias of suitable voltage amplitude and pulse duration which is applied across the microhotplate contact pads. A corresponding heat pulse from the Pt heating element (1 mm(2)) embedded within the microhotplate is delivered to the lower surface of the thin film (25 mm(2)) deposited over it...
August 2016: Review of Scientific Instruments
Jesus D Ceron, Diego M Lopez
BACKGROUND: Sedentary behavior has been associated to the development of noncommunicable diseases (NCD) such as cardiovascular diseases (CVD), type 2 diabetes, and cancer. Accelerometers and inclinometers have been used to estimate sedentary behaviors, however a major limitation is that these devices do not provide contextual information such as the activity performed, e.g., TV viewing, sitting at work, driving, etc. OBJECTIVE: The main objective of the thesis is to propose and evaluate a Personal Health Record System to support the assessment and monitoring of sedentary behaviors...
2016: Studies in Health Technology and Informatics
Vedran Sekara, Arkadiusz Stopczynski, Sune Lehmann
Social systems are in a constant state of flux, with dynamics spanning from minute-by-minute changes to patterns present on the timescale of years. Accurate models of social dynamics are important for understanding the spreading of influence or diseases, formation of friendships, and the productivity of teams. Although there has been much progress on understanding complex networks over the past decade, little is known about the regularities governing the microdynamics of social networks. Here, we explore the dynamic social network of a densely-connected population of ∼1,000 individuals and their interactions in the network of real-world person-to-person proximity measured via Bluetooth, as well as their telecommunication networks, online social media contacts, geolocation, and demographic data...
September 6, 2016: Proceedings of the National Academy of Sciences of the United States of America
Mira Baek, Bo Kyung Koo, Byoung Jae Kim, Kyung-Ran Hong, Jongdeuk Kim, Sooyoung Yoo, Hee Hwang, Jeongwan Seo, Donghyeok Kim, Kichul Shin
OBJECTIVES: To develop a tool which can easily access the hospital information system (HIS) to facilitate outpatient care and maximize patient satisfaction on his or her hospital visit. METHODS: Our Center for Informatics developed an outpatient guidance system (OGS) after careful analysis of the list of daily tasks undergone by patients and related work processes. Bluetooth beacons were installed to assist patients, to inform them of points of interest, and to guide them along the proper routes to and within the hospital...
July 2016: Healthcare Informatics Research
Kimberly Massey, Shruti Kant, Pina Violano, Linda Roney, William King, William Justice, Kristen McFalls, Kathy Monroe
BACKGROUND: Distracting driving is considered a dangerous epidemic in teenage drivers and adult drivers nationwide. Cell phone use, such as talking and texting is one of the most common driving distractions among adult and teenage drivers. Using the model of a previously published study from New Haven, Connecticut, we sought to investigate the driving behaviors of parents while transporting their children in Alabama. METHODS: A comparison study was conducted of 150 participants from suburban (n = 86) and rural (n = 64) clinics in Alabama...
October 2016: Journal of Trauma and Acute Care Surgery
Igor Belyaev, Amy Dean, Horst Eger, Gerhard Hubmann, Reinhold Jandrisovits, Markus Kern, Michael Kundi, Hanns Moshammer, Piero Lercher, Kurt Müller, Gerd Oberfeld, Peter Ohnsorge, Peter Pelzmann, Claus Scheingraber, Roby Thill
Chronic diseases and illnesses associated with non-specific symptoms are on the rise. In addition to chronic stress in social and work environments, physical and chemical exposures at home, at work, and during leisure activities are causal or contributing environmental stressors that deserve attention by the general practitioner as well as by all other members of the health care community. It seems necessary now to take "new exposures" like electromagnetic fields (EMF) into account. Physicians are increasingly confronted with health problems from unidentified causes...
September 1, 2016: Reviews on Environmental Health
Xilin Liu, Milin Zhang, Tao Xiong, Andrew G Richardson, Timothy H Lucas, Peter S Chin, Ralph Etienne-Cummings, Trac D Tran, Jan Van der Spiegel
Reliable, multi-channel neural recording is critical to the neuroscience research and clinical treatment. However, most hardware development of fully integrated, multi-channel wireless neural recorders to-date, is still in the proof-of-concept stage. To be ready for practical use, the trade-offs between performance, power consumption, device size, robustness, and compatibility need to be carefully taken into account. This paper presents an optimized wireless compressed sensing neural signal recording system...
July 18, 2016: IEEE Transactions on Biomedical Circuits and Systems
Tjeerd W Boonstra, Mark E Larsen, Helen Christensen
Interpersonal relationships are vital for our daily functioning and wellbeing. Social networks may form the primary means by which environmental influences determine individual traits. Several studies have shown the influence of social networks on decision-making, behaviors and wellbeing. Smartphones have great potential for measuring social networks in a real world setting. Here we tested the feasibility of using people's own smartphones as a data collection platform for face-to-face interactions. We developed an application for iOS and Android to collect Bluetooth data and acquired one week of data from 14 participants in our organization...
November 2015: Heliyon
Thomas M Deserno, Nikolaus Marx
BACKGROUND: Since 1942, when Goldberger introduced the 12-lead electrocardiography (ECG), this diagnostic method has not been changed. OBJECTIVES: After 70 years of technologic developments, we revisit Holter ECG from recording to understanding. METHODS: A fundamental change is fore-seen towards "computational ECG" (CECG), where continuous monitoring is producing big data volumes that are impossible to be inspected conventionally but require efficient computational methods...
August 5, 2016: Methods of Information in Medicine
Zhipeng Cai, Kan Luo, Jianqing Li
Ambulatory electrocardiogram (ECG) monitoring can effectively reduce the risk and death rate of patients with cardiovascular diseases (CVDs). The Body Sensor Network (BSN) based ECG monitoring is a new and efficien method to protect the CVDs patients. To meet the challenges of miniaturization, low power and high signal quality of the node, we proposed a novel 50 mmX 50 mmX 10 mm, 30 g wireless ECG node, which includes the single-chip an alog front-end AD8232, ultra-low power microprocessor MSP430F1611 and Bluetooth module HM-11...
February 2016: Sheng Wu Yi Xue Gong Cheng Xue za Zhi, Journal of Biomedical Engineering, Shengwu Yixue Gongchengxue Zazhi
Jackie L Clark, Carmen Pustejovsky, Sven Vanneste
PURPOSE: With the advent of Bluetooth technology, many of the assistive listening devices for hearing have become manufacturer specific, with little objective information about the performance provided. METHOD: Thirty native English-speaking adults (mean age 29.8) with normal hearing were tested pseudo-randomly with two major hearing aid manufacturers' proprietary Bluetooth connectivity devices paired to the accompanying manufacturer's specific hearing aids. Sentence recognition performance was objectively measured for each system with signals transmitted via a land-line to the same iPhone in two conditions...
July 4, 2016: Disability and Rehabilitation. Assistive Technology
Roxanne E Buxton, Michael R West, Kent L Kalogera, Andrea M Hanson
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
Kyukwang Kim, Hyeong Keun Kim, Hwijoon Lim, Hyun Myung
In this research an open source, low power sensor node was developed to check the growth of mycobacteria in a culture bottle with a nitrate reductase assay method for a drug susceptibility test. The sensor system reports the temperature and color sensor output frequency change of the culture bottle when the device is triggered. After the culture process is finished, a nitrite ion detecting solution based on a commercial nitrite ion detection kit is injected into the culture bottle by a syringe pump to check bacterial growth by the formation of a pigment by the reaction between the solution and the color sensor...
2016: Sensors
Min Su Kim, Jae Geun Lee, Soon Ju Kang
In the near future, we can expect to see robots naturally following or going ahead of humans, similar to pet behavior. We call this type of robots "Pet-Bot". To implement this function in a robot, in this paper we introduce a self-organizing interaction and synchronization method between wearable devices and Pet-Bots. First, the Pet-Bot opportunistically identifies its owner without any human intervention, which means that the robot self-identifies the owner's approach on its own. Second, Pet-Bot's activity is synchronized with the owner's behavior...
2016: Sensors
Christopher Moufawad El Achkar, Constanze Lenoble-Hoskovec, Kristof Major, Anisoara Paraschiv-Ionescu, Christophe Büla, Kamiar Aminian
Activity monitoring in daily life is gaining momentum as a health assessment tool, especially in older adults and at-risk populations. Several research-based and commercial systems have been proposed with varying performances in classification accuracy. Configurations with many sensors are generally accurate but cumbersome, whereas single sensors tend to have lower accuracies. To this end, we propose an instrumented shoes system capable of accurate activity classification and gait analysis that contains sensors located entirely at the level of the shoes...
2016: Studies in Health Technology and Informatics
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