Results 31 to 40 of about 4,296 (231)

Instantaneous Respiratory Estimation from Thoracic Impedance by Empirical Mode Decomposition

Sensors, 2015
Impedance plethysmography provides a way to measure respiratory activity by sensing the change of thoracic impedance caused by inspiration and expiration.
Fu-Tai Wang, Hsiao-Lung Chan, Chun-Li Wang, Hung-Ming Jian, Sheng-Hsiung Lin   +4 more
doaj   +1 more source

Bio-Impedance Measurement Optimization for High-Resolution Carotid Pulse Sensing

Sensors, 2021
Continuous hemodynamic monitoring is important for long-term cardiovascular healthcare, especially in hypertension. The impedance plethysmography (IPG) based carotid pulse sensing is a non-invasive diagnosis technique for measuring pulse signals and ...
Ting-Wei Wang, Hsiao-Wei Chu, Lin Chou, Yen-Ling Sung, Yuan-Ta Shih, Po-Chun Hsu, Hao-Min Cheng, Shien-Fong Lin   +7 more
doaj   +1 more source

Prediction of fat-free mass in a multi-ethnic cohort of infants using bioelectrical impedance: Validation against the PEA POD

Frontiers in Nutrition, 2022
BackgroundBioelectrical impedance analysis (BIA) is widely used to measure body composition but has not been adequately evaluated in infancy. Prior studies have largely been of poor quality, and few included healthy term-born offspring, so it is unclear ...
Jaz Lyons-Reid, Leigh C. Ward, José G. B. Derraik, José G. B. Derraik, José G. B. Derraik, José G. B. Derraik, Mya-Thway Tint, Mya-Thway Tint, Cathriona R. Monnard, Jose M. Ramos Nieves, Benjamin B. Albert, Timothy Kenealy, Timothy Kenealy, Keith M. Godfrey, Keith M. Godfrey, Shiao-Yng Chan, Shiao-Yng Chan, Wayne S. Cutfield, Wayne S. Cutfield   +18 more
doaj   +1 more source

Telemonitoring Techniques for Lung Volume Measurement: Accuracy, Artifacts and Effort

Frontiers in Digital Health, 2020
Telemonitoring becomes more important in pulmonary research. It can be used to decrease the pressure on the health care system, to lower the costs of health care and to increase quality of life of patients.
Denise C. Mannée, Frans de Jongh, Hanneke van Helvoort   +2 more
doaj   +1 more source

Semi‐Transparent Organic Photodiodes with Near‐Infrared Detection Fabricated by Inkjet Printing

Advanced Electronic Materials, EarlyView.
This work shows the inkjet printing of semi‐transparent and opaque organic photodiodes that enable light detection in the near‐infrared regime. Their transparency and high detection speed make them ideal for applications in soft robotics, wearable devices, and light communication systems.
Luis Arturo Ruiz‐Preciado, Peter Krebsbach, Mervin Seiberlich, Gerardo Hernandez‐Sosa   +3 more
wiley   +1 more source

Liquid Metals in Radio Frequency Applications: A Review of Physics, Manufacturing, and Emerging Technologies

Advanced Electronic Materials, EarlyView.
This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley   +1 more source

Neonatal Respiration Monitoring System with Synchronized Oxygen Supply and Machine Learning‐Based Breathing Classification

Advanced Intelligent Systems, EarlyView.
The study presents a low‐cost, noninvasive system for real‐time neonatal respiratory monitoring. A flexible, screen‐printed sensor patch captures chest movements with high sensitivity and minimal drift. Combined with machine learning, the system accurately detects breathing patterns and offers a practical solution for neonatal care in low‐resource ...
Gitansh Verma, Eugen Koch, Andreas Dietzel, Shrutidhara Sarma   +3 more
wiley   +1 more source

Body fat measurement by bioelectrical impedance and air displacement plethysmography: a cross-validation study to design bioelectrical impedance equations in Mexican adults

Nutrition Journal, 2007
Background The study of body composition in specific populations by techniques such as bio-impedance analysis (BIA) requires validation based on standard reference methods. The aim of this study was to develop and cross-validate a predictive equation for
Valencia Mauro E, Esparza-Romero Julián, Alemán-Mateo Heliodoro, Macias Nayeli   +3 more
doaj   +1 more source

Severe, Non‐apneic Respiratory Dysfunction and Hypoxia following Generalized Convulsive Seizures

Annals of Neurology, EarlyView.
Objective Sudden unexpected death in epilepsy (SUDEP) is a devastating consequence of some generalized convulsive seizures (GCS). Recent work has focused on seizure related apnea as a biomarker of SUDEP risk, frequently without characterizing the adequacy of non‐apneic ventilation or identifying other dysfunctional breathing patterns.
Haley E. Pysick, Rup K. Sainju, Roshni Nair, Deidre N. Dragon, Eduardo Bravo, Laura Vilella, Xiaojin Li, Samden D. Lhatoo, George B. Richerson, Brian K. Gehlbach   +9 more
wiley   +1 more source

Modeling Anisotropic Electrical Conductivity of Blood: Translating Microscale Effects of Red Blood Cell Motion into a Macroscale Property of Blood

Bioengineering
Cardiovascular diseases are a leading global cause of mortality. The current standard diagnostic methods, such as imaging and invasive procedures, are relatively expensive and partly connected with risks to the patient. Bioimpedance measurements hold the
Alireza Jafarinia, Vahid Badeli, Thomas Krispel, Gian Marco Melito, Günter Brenn, Alice Reinbacher-Köstinger, Manfred Kaltenbacher, Thomas Hochrainer   +7 more
doaj   +1 more source