A new method for long-term monitoring of the ballistocardiogram, heart rate, and respiration

1981 ◽  
Vol 240 (5) ◽  
pp. R384-R392 ◽  
Author(s):  
J. Alihanka ◽  
K. Vaahtoranta ◽  
I. Saarikivi
Keyword(s):  
Heart Rate ◽  
Respiratory Rate ◽  
Respiratory Movement ◽  
Body Movements ◽  
Ultralow Frequency ◽  
Wave Forms ◽  
The Subject ◽  
Long Term Monitoring ◽  
Term Monitoring

The principle of the static charge-sensitive-bed (SCSB) method is described. The method is simple and inexpensive. From the SCSB recording the ballistocardiogram (BCG) and respiratory movement can be simultaneously recorded by selective filtering of the original signal. The SCSB recording thus enables continuous long-term monitoring of the BCG, heart rate, respiratory rate, respiratory amplitude, and body movements. There are no electrodes or cables connected to the subject. The SCSB-BCG signal was studied by comparing the SCSB method with the conventional ultralow-frequency (ULF) acceleration BCG. The wave forms at rest and the amplitude responses to physical exercise were studied by both methods. Multiple recordings of the BCG, heart rate, respiratory movement, respiratory rate, and body movements after exercise and during sleep using the SCSB method are presented. The SCSB method opens new approaches to long-term studies of the regulation of myocardial performance, heart rate, and respiration. Applications of the SCSB method for clinical sleep studies, patient monitoring and cardiovascular screening examinations are discussed.

scholarly journals ECG Ambulatory System for Long Term Monitoring of Heart Rate Dynamics

10.5772/20946 ◽  
2011 ◽  
Author(s):  
Agustin Marquez-Espinoza ◽  
Jose G. ◽  
Gabriel Vega-Martinez ◽  
Carlos Alvarado-Serrano
Keyword(s):  
Heart Rate ◽  
Heart Rate Dynamics ◽  
Long Term Monitoring ◽  
Term Monitoring

scholarly journals A METADATA-BASED APPROACH FOR USING CCTV TO FACILITATE EMERGENCY RESPONSE

2020 ◽  
Vol XLIV-3/W1-2020 ◽  
pp. 51-57
Author(s):  
J-H. Hong ◽  
Y-T. Shi
Keyword(s):  
Emergency Response ◽  
Crucial Role ◽  
Visual Inspection ◽  
September 11 ◽  
September 11 Attacks ◽  
The Subject ◽  
Long Term Monitoring ◽  
Term Monitoring ◽  
2D To 3D

Abstract. The installation of closed-circuit television monitors (CCTV) has been rapidly increasing ever since the September 11 attacks and has become one of the most widely used types of sensors for the tasks that require instantaneous and long-term monitoring. With the distinguished characteristics of direct visual inspection of the subject of interests, the availability of CCTVs offers the EOC commanders a quick way to validate and access the reported disaster incidents during emergency response. However, the heterogeneity of CCTV systems and the lack of appropriate descriptions precludes the optimized use of CCTV and causes immense difficulties in effectively coordinating or appraising the use of CCTV systems. By arguing standardized metadata plays the most crucial role in quickly and precisely finding the needed CCTV during emergency response, regardless of its specifications, suppliers, or locations, we propose an integrated operational framework based on the CCTV metadata specifically designed for emergency response in this paper. This framework standardizes the metadata to unify the descriptions for heterogeneous CCTV systems and fulfill the requirements for searching and selecting CCTV. Instead of the 2D point-based location or sector-based CCTV FOV coverage, we also propose to extend the FOV from 2D to 3D to precisely describe the area and even the features that can be monitored by the CCTV. This not only improves the precision and efficiency of selecting CCTV but also increase the commander’s ability to make quick and accurate responses to disasters. The advantages of integrating heterogeneous CCTV systems can tremendously improve the possibility of monitoring and updating the real-time status caused by hazards.

Electrode Belt: A New Method for Long-Term Monitoring

PEDIATRICS ◽  
1979 ◽  
Vol 63 (4) ◽  
pp. 670-673
Author(s):  
Dorothy H. Kelly ◽  
Kathleen O'Connell ◽  
Daniel C. Shannon
Keyword(s):  
Heart Rate ◽  
Sleep Apnea ◽  
Electronic Monitoring ◽  
False Alarms ◽  
American Academy Of Pediatrics ◽  
Long Term Monitoring ◽  
Monitoring Devices ◽  
Term Monitoring ◽  
At Home

Infants who have experienced an episode of prolonged sleep apnea associated with cyanosis, pallor, and limpness requiring vigorous stimulation or mouth-to-mouth resuscitation to restore breathing, are at risk of experiencing a recurrence that may result in death1.2. The American Academy of Pediatrics has recommended that such infants be treated by 24-hour surveillance either in the home or in the hospital. Electronic monitoring devices "may be useful adjuncts" to such surveillance.3 Since 1973, we have monitored 270 infants at home with apnea or cardiac monitors. A major problem with monitoring infants at home has been false alarms, such as alarms for apnea when the infant is breathing, on heart rate or apnea alarms due to a loose electrode.

Long-Term Monitoring of Heart Rate, Respiration Rhythm, and Body Movement During Sleep Based upon a Network

2010 ◽  
Vol 16 (2) ◽  
pp. 244-253 ◽  
Author(s):  
Xin Zhu ◽  
Wenxi Chen ◽  
Tetsu Nemoto ◽  
Kei-ichiro Kitamura ◽  
Daming Wei
Keyword(s):  
Heart Rate ◽  
Body Movement ◽  
Respiration Rhythm ◽  
Long Term Monitoring ◽  
Term Monitoring

Fashionable wrist band using highly conductive fabric for electrocardiogram signal monitoring

2018 ◽  
Vol 49 (2) ◽  
pp. 243-261 ◽  
Author(s):  
Partha Sarati Das ◽  
Jae Woo Kim ◽  
Jae Yeong Park
Keyword(s):  
Motion Artifacts ◽  
Frequency Change ◽  
Ecg Signal ◽  
Electrode Impedance ◽  
Conductive Fabric ◽  
The Subject ◽  
Long Term Monitoring ◽  
Fabric Surface ◽  
Term Monitoring

In this paper, a flexible and wearable fabric-based and highly conductive wrist band with portable electrocardiogram (ECG) equipment is presented for the long-term monitoring of ECG signals. The impedance properties, skin irritation, and sensitivity are then investigated using the proposed wrist band. The wrist band was constructed using conductive fabric, a Velcro strap, a metal snap, and a nickel connector. The entire polyester fabric surface was coated with nickel, copper, and gold. The sheet resistance of the conductive fabric is 0.06 Ω/sq. It is appropriate to use a dry fabric electrode for long-term monitoring purposes, rather than a gel-based Ag/AgCl electrode. The proposed system does not require additional active electrodes, and a single-layer standard printed circuit board (PCB) was developed to allow for portable ECG signal acquisition. We measured the impedance as per the frequency change and compared the outcomes with those of Ag/AgCl electrodes. Subsequently, we measured the ECG signal and investigated the possible artifacts caused by motion. The skin-electrode impedance of the wrist band was measured and compared to the Ag/AgCl electrodes, where we found a lower impedance for the wrist band electrodes. In addition, the power spectrum of the biopotential signals obtained from the wrist band electrodes are evaluated and compared to those obtained with Ag/AgCl electrodes for estimating signal quality. The experimental results show that the proposed electrode can successfully acquire an ECG signal from the wrist when the subject is resting and fewer motion artifacts are shown when the subject moves, rendering the proposed electrode comparable with the traditional disposable and gelled Ag/AgCl electrodes.

scholarly journals Long-Term Monitoring of Physical Behavior Reveals Different Cardiac Responses to Physical Activity among Subjects with and without Chronic Neck Pain

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
David M. Hallman ◽  
Svend Erik Mathiassen ◽  
Eugene Lyskov
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Neck Pain ◽  
Chronic Neck Pain ◽  
Daily Physical Activity ◽  
Physical Behavior ◽  
Long Term Monitoring ◽  
Term Monitoring

Background. We determined the extent to which heart rate variability (HRV) responses to daily physical activity differ between subjects with and without chronic neck pain.Method. Twenty-nine subjects (13 women) with chronic neck pain and 27 age- and gender-matched healthy controls participated. Physical activity (accelerometry), HRV (heart rate monitor), and spatial location (Global Positioning System (GPS)) were recorded for 74 hours. GPS data were combined with a diary to identify periods of work and of leisure at home and elsewhere. Time- and frequency-domain HRV indices were calculated and stratified by period and activity type (lying/sitting, standing, or walking). ANCOVAs with multiple adjustments were used to disclose possible group differences in HRV.Results. The pain group showed a reduced HRV response to physical activity compared with controls (p=.001), according to the sympathetic-baroreceptor HRV index (LF/HF, ratio between low- and high-frequency power), even after adjustment for leisure time physical activity, work stress, sleep quality, mental health, and aerobic capacity (p=.02). The parasympathetic response to physical activity did not differ between groups.Conclusions. Relying on long-term monitoring of physical behavior and heart rate variability, we found an aberrant sympathetic-baroreceptor response to daily physical activity among subjects with chronic neck pain.

Applied Technology with an Improved ICA Algortihm and its Application in Heart Rate Measurement

2014 ◽  
Vol 1046 ◽  
pp. 92-95
Author(s):  
Yang Wang ◽  
Pei Xiang Tan ◽  
An Yuan Chen
Keyword(s):  
Heart Rate ◽  
Human Physiology ◽  
Human Health ◽  
Experimental Results ◽  
Rate Measurement ◽  
Applied Technology ◽  
Long Term Monitoring ◽  
Nonlinear Signal ◽  
Term Monitoring

Heart rate is an important idicator of human physiology,it has great significance for human health in the long-term monitoring process.This research is based on Photo Plethysmo Graphy (PPG) principle.First,get some video via webcam,and then extract the signal of Face PPG.We proposed an improved ICA agortihm,because of the heart rate signal is a non-stationary and nonlinear signal,then,HHT-domain analysis of Face PPG signal.Finally,we succeeed in measuring of the heart-rate.The experimental results show that,using the improved ICA algortihm ,it is not only reduce the iteration ,but also has better measurement.

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