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wireless continuous monitoring

Pedro J Chacon, Limeng Pu, Tallis H da Costa, Young-Ho Shin, Taher Ghomian, Hamed Shamkhalichenar, Hsiao-Chun Wu, Brian A Irving, Jin-Woo Choi
Advances in several engineering fields have led to a trend towards miniaturization and portability of wearable biosensing devices, which used to be confined to large tools and clinical settings. Various systems to continuously measure electrophysiological activity through electrical and optical methods are one category of such devices. Being wearable and intended for prolonged use, the amount of noise introduced on sensors by movement remains a challenge and requires further optimization. User movement causes motion artifacts that alter the overall quality of the signals obtained, hence corrupting the resulting measurements...
October 9, 2018: IEEE Transactions on Bio-medical Engineering
Joakim Glasin, Joakim Henricson, Lars-Göran Lindberg, Daniel Wilhelms
Vital sign assessment is a common task in emergency medicine, but resources for continuous monitoring are restricted, data is often recorded manually, and entangled wires cause frustration. Therefore, we designed a small, wireless photoplethysmographic device capable of continuously assessing pulse, respiratory frequency and oxygen saturation on the sternum and tested the performance and feasibility in an emergency department setting. Fifty (56.3 ± 20.2 years), consenting emergency patients (29 male) were recruited...
October 10, 2018: Journal of Biophotonics
Edward J Bellfield, Lisa K Sharp, Yinglin Xia, Ben S Gerber
BACKGROUND: Cloud-based glucose monitoring programs allow users with diabetes to wirelessly synchronize their glucometers to their mobile phones. They also provide visualization and remote access of their data through its mobile app. There have been very few studies evaluating their effectiveness in managing diabetes among adolescents with type 1 diabetes (T1D). OBJECTIVE: The purpose of this study was to assess the feasibility of using a mobile app to improve daily average blood glucose (BG) levels and increase BG monitoring frequency...
February 7, 2018: JMIR diabetes
MuhibUr Rahman, Mahdi NaghshvarianJahromi, Seyed Sajad Mirjavadi, Abdel Magid Hamouda
This paper presents a novel resonator that can switch and create three important behaviors within the same antenna using miniaturized capacitors. The resonator was integrated into conventional Ultra-Wide Band (UWB) antenna to achieve UWB and Single/Dual continuously tunable-notch behaviors. The Single/Dual notched was continuously tuned to our desired frequency band by changing the value of the capacitors. The antenna designed and fabricated to validate these behaviors had a compact size of 24 × 30.5 mm², including the ground plane...
October 4, 2018: Sensors
Jorge S Chaglla E, Numan Celik, Wamadeva Balachandran
Continuous and reliable measurements of core body temperature (CBT) are vital for studies on human thermoregulation. Because tympanic membrane directly reflects the temperature of the carotid artery, it is an accurate and non-invasive method to record CBT. However, commercial tympanic thermometers lack portability and continuous measurements. In this study, graphene inks were utilized to increase the accuracy of the temperature measurements from the ear by coating graphene platelets on the lens of an infrared thermopile sensor...
October 3, 2018: Sensors
Xiangyi Xu, Weijian Chen, Guangming Zhao, Yihang Li, Chenyang Lu, Lan Yang
The Internet of Things (IoT)1,2 employs a large number of spatially distributed wireless sensors to monitor physical environments, e.g., temperature, humidity, and air pressure, and has many applications, including environmental monitoring3 , health care monitoring4 , smart cities5 , and precision agriculture. A wireless sensor can collect, analyze, and transmit measurements of its environment1,2 . Currently, wireless sensors used in the IoT are predominately based on electronic devices that may suffer from electromagnetic interference in many circumstances...
2018: Light, Science & Applications
K Koyama, T Koyama, M Sugimoto, N Kusakari, R Miura, K Yoshioka, M Hirako
Dystocia adversely affects the health of calves and their dams. The aim of this study was to determine whether the ventral tail base surface temperature (ST) could be used to predict calving time in dairy cows. Pregnant Holstein cows were enrolled during the warm season (daily average air temperature 10-20°C; n=13) and cool season (daily average air temperature<10°C; n=22) in Hokkaido, Japan, and a wearable wireless ST sensor was attached to the surface of the ventral tail base of each cow 9-12days before the predicted calving date...
October 2018: Veterinary Journal
C E Angermann, S Rosenkranz
Heart failure (HF) is an emerging epidemic associated with significant morbidity and mortality, impaired quality of life and high healthcare costs. Despite major advances in pharmacological and device-based therapies, mortality and morbidity have remained high after an index hospitalization for acute cardiac decompensation (ACD). Randomized trials evaluating various forms of noninvasive telemonitoring failed to improve rehospitalization rates in such patients, possibly due to lack of sensitivity of clinical signs and symptoms as early indicators of HF...
October 2018: Der Internist
Courtney Peckens, Cédric Porter, Taylor Rink
Noise pollution in urban environments is becoming increasingly common and it has potential to negatively impact people's health and decrease overall productivity. In order to alleviate these effects, it is important to better quantify noise patterns and levels through data collection and analysis. Wireless sensor networks offer a method for achieving this with a higher level of granularity than traditional handheld devices. In this study, a wireless sensing unit (WSU) was developed that possesses the same functionality as a handheld sound level meter...
September 19, 2018: Sensors
Carolyn A Duncan, Scott N MacKinnon, Jacques F Marais, Fabien A Basset
Background: Previous research suggests motion induced fatigue contributes to significant performance degradation and is likely related to a higher incidence of accidents and injuries. However, the exact effect of continuous multidirectional platform perturbations on energy cost (EC) with experienced personnel on boats and other seafaring vessels remains unknown. Objective: The objective of this experiment was to measure the metabolic ECs associated with maintaining postural stability in a motion-rich environment...
2018: PeerJ
Pooi Khoon Lim, Siew-Cheok Ng, Nigel H Lovell, Yong Poh Yu, Maw Pin Tan, Devin McCombie, Einly Lim, Stephen J Redmond
OBJECTIVE: The photoplethysmography (PPG) signal, commonly used in the healthcare settings, is easily affected by movement artefact leading to errors in the extracted heart rate and SpO2 estimates. This study aims to develop an online artefact detection system based on adaptive (dynamic) template matching, suitable for continuous PPG monitoring during daily living activities or in the intensive care units (ICUs). APPROACH: Several master templates are initially generated by applying principal component analysis to data obtained from the PhysioNet MIMIC II database...
October 11, 2018: Physiological Measurement
Nico Reinsch, Ute Ruprecht, Jochen Buchholz, Rolf R Diehl, Hagen Kälsch, Kars Neven
INTRODUCTION: Implantable loop recorders (ILR) are leadless subcutaneous devices that allow cardiac monitoring for up to 3 years and are a valuable tool in the diagnosis of arrhythmias, cryptogenic stroke and unexplained syncope. The Biotronik BioMonitor 2 is a novel, insertable ILR allowing long-term continuous monitoring with wireless telemetry options. METHODS: A single-center, prospective, observational study investigating the reliability of sensing quality and detection performance in the BioMonitor 2 ILR, as well as post-implantation patient satisfaction...
September 2018: Journal of Electrocardiology
Ruhi Mahajan, Bashir I Morshed, Gavin M Bidelman
Body sensor network (BSN) is a promising human-centric technology to monitor neurophysiological data. We propose a fully-reconfigurable architecture that addresses the major challenges of a heterogenous BSN, such as scalabiliy, modularity and flexibility in deployment. Existing BSNs especially with Electroencephalogarm (EEG) have these limitations mainly due to the use of driven-right-leg (DRL) circuit. We address these limitations by custom-designing DRL-less EEG smart sensing nodes (SSN) for modular and spatially distributed systems...
August 30, 2018: Journal of Medical Systems
Medha Satyarengga, Tariq Siddiqui, Elias K Spanakis
PURPOSE OF THE REVIEW: Hospitalized patients with diabetes are monitored with point-of-care glucose testing. Continuous glucose monitoring (CGM) devices represent an alternative way to monitor glucose values; however, the in-hospital CGM use is still considered experimental. Most inpatient studies used "blinded" CGM properties and only few used the real-time/unblinded CGM features. One major limitation of the CGM devices is that they need to be placed at the patients' bedside, limiting any therapeutic interventions...
August 29, 2018: Current Diabetes Reports
Natiely Hernández-Sebastián, Daniela Díaz-Alonso, Francisco Javier Renero-Carrillo, Noé Villa-Villaseñor, Wilfrido Calleja-Arriaga
This paper reports the novel design of a touch mode capacitive pressure sensor (TMCPS) system with a wireless approach for a full-range continuous monitoring of ventricular pressure. The system consists of two modules: an implantable set and an external reading device. The implantable set, restricted to a 2 × 2 cm² area, consists of a TMCPS array connected with a dual-layer coil, for making a reliable resonant circuit for communication with the external device. The capacitive array is modelled considering the small deflection regime for achieving a dynamic and full 5⁻300 mmHg pressure range...
August 24, 2018: Sensors
A Hasan Sapci, H Aylin Sapci
Introduction Disruptive medical technologies, wearable devices and new diagnostic solutions have been shaping the future of healthcare, and the health informatics skills gap has become a major problem for technology-centric healthcare applications. This study evaluated the relationships between a specific practical skills training method and students' confidence in using wireless monitoring devices along with the attitude towards technology adoption. Methods Six practical exercises were developed to provide health informatics technical skills to transfer medical information and display multi-channel biological signals...
August 22, 2018: Journal of Telemedicine and Telecare
Guangming Wang, Shaomin Zhang, Shurong Dong, Dong Lou, Lie Ma, Xiachuan Pei, Hongsheng Xu, Farooq Umar, Wei Guo, Jikui Luo
OBJECTIVE: Continuous measurement of key physiological parameters, such as heart rate (HR), pulse oxygen saturation (SpO2) and sweat pH value, has very broad applications in healthcare, disease surveillance, fitness and sports training. In this study, a stretchable optical sensing patch system was developed for real-time continuous noninvasive monitoring of HR, SpO2 and sweat pH, and the sensing data were transmitted to a smartphone through Bluetooth. METHODS: The sensor patch system adopted serpentine stretchable interconnects between the optical sensor and microcontroller chip with wireless function on a flexible substrate...
August 20, 2018: IEEE Transactions on Bio-medical Engineering
Christian Peter Subbe, Sean Kinsella
Respiratory Rate (RR) is the best marker to indicate deterioration but measurement are often inaccurate. The RespiraSense™ is a non-invasive, wireless, body worn, motion-tolerant and continuous respiratory rate monitor. We aimed to determine whether the performance of RespiraSense™ was equivalent to that of a gold standard measurement technique of capnography and the industry standard of manual counts. RespiraSense™ measures respiratory rate and transmit signals wirelessly to a tablet device. We measured respiratory rate in 24 emergency admissions to an Acute Medical Unit in the UK...
August 17, 2018: Sensors
Youn Ok Lee, Antonio A Morgan-Lopez, James M Nonnemaker, Jessica K Pepper, Edward C Hensel, Risa J Robinson
Introduction: Delivery of nicotine and substances from electronic nicotine delivery systems, or e-cigarettes, depends in-part on how users puff on the devices. Little is known about variation in puffing behavior to inform testing protocols or understand if puffing behaviors result in increased exposure to emissions. Methods: We analyzed puff topography data collected using a wireless portable use monitor (wPUMTM) continuously over 2 weeks among N = 34 current second generation ecigarette users in their everyday lives...
August 10, 2018: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
Yifan Zhou, Luis Alejandro Mur, Arwyn Edwards, John Davies, Jiwan Han, Huawei Qin, Ying Ye
Freshwater quality detection is important for pollution control. Three important components of water quality are pH, ammonia and dissolved H2 S and there is an urgent need for a high-precision sensor for simultaneous and continuous measurement. In this study, all-solid-state electrodes of Eh, pH, NH4 + and S2- were manufactured and mounted to a wireless chemical sensor with multiple parameters. Calibration indicated that the pH electrode had a Nernst response with slope of 53.174 mV; the NH4 + electrode had a detection limit of 10-5 mol/L (Nernst response slope of 53...
August 2018: Water Science and Technology: a Journal of the International Association on Water Pollution Research
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