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Today's technological growth has made ubiquitous health care accessible to all by means of wearable health monitoring system. Such a system is essential for continuous monitoring of physiological signals and to provide early warnings for the chronic illness. The major challenge lies on the selection of processor and transmission mode. This paper highlights on the pilot study of developing ubiquitous...
Energy production accompanied with oxygen consumption (VO2) and carbon dioxide production (VCO2). To accurately measure energy expenditure (EE), indirect calorimetry is considered as the standard equipment that it can determine the respiratory gas exchange. Due to it remains an expensive technique and requires the use of a mask that the subject may feel uncomfortable. So the aim of this study was...
Continuous monitoring of respiratory activity is mandatory in clinical, high risk situations such as ambulatory monitoring, intensive care, stress tests and sleep disorder investigations. Extraction of surrogate respiratory activity from electrocardiogram (ECG), blood pressure (BP) and photoplethysmographic (PPG) signals will potentially eliminate the use of additional sensor intended to record respiration...
Long-term monitoring of health is essential in many chronic conditions, but automatic monitoring is not yet utilized routinely with mental stress. Accelerometers, magnetometers, ECG, respiratory effort, skin temperature and pulse oximetry were used with 12 health volunteers in this study for monitoring 1) heavy mental load, 2) normal mental load, 3) walking, 4) running and 5) lying. Heavy mental load...
The clinical significance of certain cardiac arrhythmias can be understood only with reference to respiration. In normal healthy conditions, the respiratory rate is 10-20 breaths/minute. But, certain problems of illness, accidents or some other causes affect the regular sinus rhythm. A non-invasive, non-occlusive and non-intrusive respiration monitoring is desirable in a number of situations such...
Objective: A minimum parameter set for the representation of body vital signs was extracted, in order to reduce the power consumption and improve the communication security of the data transmission in special scenarios such as battlefields and disaster fields. Methods: ECG, RESP, EEG, TEMP and Acceleration signals were investigated, and the accuracies across the different parameter sets of vital signs...
Clinical investigation of some sleep disorders requires simultaneous monitoring of heart and respiratory rates. There have been several efforts on ECG-Derived Respiration (EDR). The photoplethysmographic (PPG) signal includes both heart and respiratory components. In situations such as ambulatory monitoring, stress tests and sleep disorder investigations, where the respiration is not monitored by...
This paper presents the hardware overview, design and implementation of a fully wireless ambulatory multi-parameter monitoring system. This mobile ambulatory system is designed to be integrated, wearable, and of low power consumption. The front-end hardware includes sensors and signal-conditioning circuits, integrated into a form factor of 30mmX50mm. Communication is implemented with Bluetooth sensor...
The reliability of respiratory signal extraction methods from electrocardiogram (ECG) data is investigated. To provide a reference, a breathing sensor using a piezo-electric cable was designed and constructed. Two previously established methods, QRS amplitude modulation and respiratory sinus arrhythmia (RSA), are adapted to include the PQRST complex of the ECG. In addition, a third method, which we...
Free of most social constraints, elderly people tend to perform activities of daily living following the same sequence. This paper proposes a method for medical telesurveillance to detect and quantify a nycthemeral shift in this daily routine. While this common phenomenon is mostly mild, in acute cases, however, it may reveal a pathological behavior requiring a rapid medical examination. This method...
The final generation of ProeTEX prototypes has been delivered in April 2010: it is based on two sets of sensorized garments devoted to monitor the health status of emergency operators working in harsh environments. This new release of garments shows several improvements with respect to the previous ones, and it is characterized by a major specialization to the requirements imposed by the different...
We have developed a non-invasive system for monitoring cardiac vibrations, respiration and body movement of in-bed hospitalized patients and elderly people who need constant care. These physiological parameters are recorded by an infrared emitting diode and a photo transistor, which are attached between spring coils in bed mattress. The infrared emitting diode diffuses infrared light into the mattress...
In the present work we apply a fully automatic procedure to the analysis of signal coming from a sensorized T-shit, worn during the night, for sleep evaluation. The goodness and reliability of the signals recorded trough the T-shirt was previously tested, while the employed algorithms for feature extraction and sleep classification were previously developed on standard ECG recordings and the obtained...
The Push-Pull Effect (PPE) is a physiological phenomenon defined as a reduction of +Gz tolerance induced by a previous exposure to a -Gz acceleration, that may lead to loss of consciousness. Aim of this study was to evaluate, for the first time, the cardiac rhythm changes associated with PPE during real flights. Data were collected in 3 pilots during flights on the Aermacchi MB- 339-CD aircraft. In...
Extreme environments such as high altitude represent a challenging testbed for both people and instruments. During a recent expedition to the slopes of Mt. Everest, (Highcare Expedition), we monitored ECG, respiration, oxygen saturation and posture in five climbers during sleep. Data were collected by using a recently developed textile-based wearable system (the MagIC system). The polysomnographic...
In this paper, we present a portable equipment for bio-chemical measurement, designed for monitoring the functional parameters of the persons undergoing cardiological and/or effort tests. This equipment is based on a digital signal processing microcontroller, and has more functions: the acquisition of ECG signals, mainly from the participant running in the effort tests for the anaerobic threshold;...
In this paper, we designed embedded-type noncontact bio-radar heart and respiration rate monitoring system. We implemented the hardware for arctangent combining, filtering and rate finding algorithm into the embedded system. We tested the hardware and compared it with the reference ECG measurements. Obtained results agree well with the ECG measurements. We propose arctangent demodulation for quadrature...
In this paper, an unconstrained and noninvasive system to detect heart rate (HR), respiratory rate and extract pulse arrival time (PAT) during sleep is proposed. The system consists of PPG sensor module embedded in a pillow and CC-ECG (capacitor coupled-ECG) sensor module. From the PPG sensor, we acquired heart rate and respiratory rate during sleep with simple peak detection algorithm. Besides, by...
A Multiparameter system was designed to monitor depth of anaesthesia for children surgical intervention. Heart rate variability (HRV) come from ECG signal, Pressure of end-tidal carbon dioxide and oxygen saturation were used to evaluate depth of anaesthesia. Some physiological parameters were obtained in real time through continuous monitor. Pressure of end-tidal carbon dioxide and respiratory rate...
Heart rate variability (HRV) describes the time variation in beat-to-beat interval, and reflects the manner in which the cardiovascular regulatory system responds to demands, stress, and illness. A particular advantage of Doppler radar for HRV monitoring is the ability to detect and monitor heart and respiration signals simultaneously, and thus provide independent measures of HRV, and respiration-related...
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