Blood Pressure Measurement
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The conference program will consist of plenary lectures, symposia, workshops and invitedsessions of the latest significant findings and developments in all the major fields of biomedical engineering.Submitted papers will be peer reviewed. Accepted high quality papers will be presented in oral and postersessions, will appear in the Conference Proceedings and will be indexed in PubMed/MEDLINE
The symposium deals with all the aspects of interactions among the worlds of the instrumentation and measurement, bio-engineering, material science, chemical and biological measurements, and the medical field. The symposium enables researchers, doctors and technicians to exchange ideas and information, make connections and collaborations and update innovation on health care systems and diagnostics in medicine.
The IEEE Sensors Conference is a forum for presentation, discussion, and exchange of state-of-the art information including the latest research and development in sensors and their related fields. It brings together researchers, developers, and practitioners from diverse fields including international scientists and engineers from academia, research institutes, and companies to present and discuss the latest results in the general field of sensors.
The International Conference on Applied Electronics is a regular event organized yearly from 1996 by the University of West Bohemia in Pilsen, Czech Republic. The aim is to provide a forum for researchers and practitioners interested in advances in the wide scope of electronic circuits and systems, especially in applications of theoretical research. The papers should report original work and applied ideas, including experimental results. All papers are peer-to-peer reviewed.
No periodicals are currently tagged "Blood Pressure Measurement"
2008 Computers in Cardiology, 2008
The aim of this study was to estimate mean blood pressure from oscillometric and manual methods. Ten healthy subjects were studied with three repeat blood pressure measurements. Manual systolic and diastolic blood pressures (SBP and DBP) were obtained by two trained observers. During the measurement the oscillometric cuff pressure waveform was recorded digitally. The cuff pressure corresponding to the largest ...
2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2015
Arterial compliance and vessel wall dynamics are significant in vascular diagnosis. We present the design of arterial compliance probes for measurement of local pulse wave velocity (PWV). Two designs of compliance probe are discussed, viz (a) a magnetic plethysmograph (MPG) based probe, and (b) a photoplethysmograph (PPG) based probe. The ability of the local PWV probes to consistently capture carotid ...
2017 IEEE International Ultrasonics Symposium (IUS), 2017
The medical management of patients with continuous-flow left ventricular assist devices (LVADs) requires frequent measurement and analysis of various physiological parameters. Among the most important is blood pressure (BP), which cannot be reliably measured by the standard oscillometric method because of an impaired pulsation due to continuous flow. The objective of this work is to show the feasibility of ultrasound-based ...
2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems & Eurosensors XXXIII (TRANSDUCERS & EUROSENSORS XXXIII), 2019
In this study, continuous and wearable blood pressure measurement devices with MEMS 3-axis force sensor array were developed. We developed prototype devices for verifying the principle and a product like device with limited function, but small, and good appearance. By applying 3-axis force sensor to the tonometry method, high precise measurement with a standard deviation of 4.2 mmHg was realized. ...
2019 International Conference on Electrical, Computer and Communication Engineering (ECCE), 2019
Korotkoff method is the most used method for blood pressure measurement. In this method, sphygmomanometer and a stethoscope are required. A trained person is required for properly measuring blood pressure. In this paper, an easy approach has been introduced to develop a non-invasive digital blood pressure meter that will enable people to measure their blood pressure at home without the ...
Kurt Petersen: 2019 IEEE Medal of Honor Recipient
IMS 2011 Microapps - Ultra Low Phase Noise Measurement Technique Using Innovative Optical Delay Lines
IMS 2011 Microapps - Waveguide Characteristics and Measurement Errors
Larson Collection interview with Linus Pauling, part 2
Larson Collection interview with Linus Pauling, part 1
IMS 2011 Microapps - Vector-Receiver Load Pull - Measurement Accuracy at its Best
I2MTC 2014 Conference Preview
IMS 2012 Microapps - Passive Intermodulation (PIM) measurement using vector network analyzer Osamu Kusano, Agilent CTD-Kobe
APEC 2012 - Thomas S. Buzak Plenary
5G Wireless A Measurement and Metrology Perspective: MicroApps 2015 - Keysight Technologies
Part Two: Interview with John Tisdale—IEEE VIC Summit 2018
3D Printing for Sensor Platform Integration - Benjamin Ingis - IEEE EMBS at NIH, 2019
MicroApps: Recent Improvement on Y-Factor Noise Figure Measurement Uncertainty (Agilent Technologies)
26th Annual MTT-AP Symposium and Mini Show - Dr. AnhVu Pham
Micro-Apps Keynote 2013: Modern RF Measurements and How They Drive Spectrum Analyzer Digital IF Processor Design
2015 IEEE Honors: IEEE Spectrum Technology in the Service of Society Award
Part 1: Interview with John Tisdale—IEEE VIC Summit 2018
MicroApps: Measurement Advances for Differential and I/Q Devices (Agilent Technologies)
Innovative Transmission Line Measurement and Characterization Reduce Time to Repair for Complex Communication Systems: MicroApps 2015 - Keysight Technologies
The aim of this study was to estimate mean blood pressure from oscillometric and manual methods. Ten healthy subjects were studied with three repeat blood pressure measurements. Manual systolic and diastolic blood pressures (SBP and DBP) were obtained by two trained observers. During the measurement the oscillometric cuff pressure waveform was recorded digitally. The cuff pressure corresponding to the largest oscillometric pulse pressure was taken as the mean arterial pressure (MAP). MAP was also estimated from manual DBP plus one third the pressure change from DBP to SBP. Blood pressure measurement variability and the difference between automated and manual MAP were quantified. The overall coefficients of variability for manual SBP and DBP were 2.2% and 4.5%. Corresponding values for manual and automated MAP were 3.1% and 3.7%. The automated MAP, as a percentage of the difference between manual DBP and SBP was 28plusmn14% (mean plusmn SD), which was lower than the classically assumed mean value of 33%. In conclusion, the relationship between MAP and SBP and DBP is complex with a large between-subject SD variability of 14%.
Arterial compliance and vessel wall dynamics are significant in vascular diagnosis. We present the design of arterial compliance probes for measurement of local pulse wave velocity (PWV). Two designs of compliance probe are discussed, viz (a) a magnetic plethysmograph (MPG) based probe, and (b) a photoplethysmograph (PPG) based probe. The ability of the local PWV probes to consistently capture carotid blood pulse waves is verified by in-vivo trials on few volunteers. The probes could reliably perform repeatable measurements of local PWV from carotid artery along small artery sections less than 20 mm. Further, correlation between the measured values of local PWV using probes and various measures of blood pressure (BP) was also investigated. The study indicates that such arterial compliance probes have strong potential in cuff less BP monitoring.
The medical management of patients with continuous-flow left ventricular assist devices (LVADs) requires frequent measurement and analysis of various physiological parameters. Among the most important is blood pressure (BP), which cannot be reliably measured by the standard oscillometric method because of an impaired pulsation due to continuous flow. The objective of this work is to show the feasibility of ultrasound-based BP measurement in a portable, easy to use device for patients with LVAD in home-based rehabilitation environments, enabling long-term remote monitoring. We have implemented a BP measurement system which uses continuous wave (CW) Doppler ultrasound for blood flow detection. The system is based on a standard cuff design with custom analog CW circuitry connected to a high-performance, low-power 32-bit microcontroller (ARM Cortex-M7). The uC is responsible for system control, as well as Doppler signal acquisition and processing. A dedicated ultrasound probe equipped with an elastic strap is placed over the radial artery. In the target solution, the cuff pressure and CW signal will be analyzed in real-time to provide systolic and/or mean blood pressure. At present, we have acquired raw signals for off-line analysis. The system was tested in clinical experiments both on healthy patients and patients with three types of commercially available LVADs (HeartWare, HeartMate II and HeartMate III). The observed morphology of Doppler signals in patients with LVADs was much more variable between patients and pumps. In most cases, we were able to estimate the systolic pressure, but the measurement of diastolic pressure was not conclusive. We observed variable blood flow patterns generated by the Lavare cycle (a periodic speed modulation feature of some LVADs), which further complicates the estimation. A prototype of an automatic BP measuring device for patients with rotary LVADs has been demonstrated. In the next step, we are planning an animal validation study with invasive blood pressure monitoring.
In this study, continuous and wearable blood pressure measurement devices with MEMS 3-axis force sensor array were developed. We developed prototype devices for verifying the principle and a product like device with limited function, but small, and good appearance. By applying 3-axis force sensor to the tonometry method, high precise measurement with a standard deviation of 4.2 mmHg was realized. Since we realized reduction of body motion noise, our device can continuously measure the blood pressure even if the subject moves somewhat during daily life.
Korotkoff method is the most used method for blood pressure measurement. In this method, sphygmomanometer and a stethoscope are required. A trained person is required for properly measuring blood pressure. In this paper, an easy approach has been introduced to develop a non-invasive digital blood pressure meter that will enable people to measure their blood pressure at home without the help of a trained person. This design consists of a simple circuit. The pressure signal is collected by a pressure sensor, which consists of the valuable signal for blood pressure measurement along with many noise signals. So, it is processed by using a two-stage bandpass filter and an analog to digital converter. The signal obtained after filtering is suitable for calculating systolic and diastolic blood pressure values using simple software design. Then calculated values of systolic and diastolic blood pressure can be shown on a liquid crystal display. In this system, no digital filtering is required. Therefore, this system is easy to implement and by using this system, it is possible to convert an analog sphygmomanometer into a digital blood pressure monitor easily. As this system provides an opportunity for measuring blood pressure at home without a trained person, it will be very helpful for early diagnosing of problems related to blood pressure.
Developing a good model for oscillometric blood-pressure measurements is a hard task. This is mainly due to the fact that the systolic and diastolic pressures cannot be directly measured by noninvasive automatic oscillometric blood-pressure meters (NIBP) but need to be computed based on some kind of algorithm. This is in strong contrast with the classical Korotkoff method, where the diastolic and systolic blood pressures can be directly measured by a sphygmomanometer. Although an NIBP returns results similar to the Korotkoff method for patients with normal blood pressures, a big discrepancy exist between both methods for severe hyper- and hypotension. For these severe cases, a statistical model is needed to compensate or calibrate the oscillometric blood-pressure meters. Although different statistical models have been already studied, no immediate calibration method has been proposed. The reason is that the step from a model, describing the measurements, to a calibration, correcting the blood-pressure meters, is a rather large leap. In this paper, we study a “databased” Fourier series approach to model the oscillometric waveform and use the Windkessel model for the blood flow to correct the oscillometric blood-pressure meters. The method is validated on a measurement campaign consisting of healthy patients and patients suffering from either hyper- or hypotension.
This paper presents a non-contact measurement method for the evaluation of human blood pressure. A reflection type optical imaging system was developed to interactively capture the human palmar back images with illumination of dual light sources. By a continuous measurement, the variation of oxygen saturation in palmar digital vein could be monitored. The fluctuation frequency of the oxygen saturation was also obtained by FFT algorithm. Through the comparison with electronic sphygmomanometer, the study succeeded in establishing a relationship between the natural blood pressure of human and venous fluctuation frequency. Also, the influence of external pressure for blood vessels on fluctuation frequency was studied. The results show that the fluctuation frequency of oxygen saturation linearly increases with the natural blood pressure or external pressure decreasing. The proposed innovations represent a solution for remote medical diagnosis technology with low risk of infection and high biocompatibility.
A simultaneous monitoring system for non-invasive blood pressure and blood oxygen saturation based on the volume-oscillometric method and the dual- wavelength spectro-photometry is developed. The principle of the volume- oscillometric method and the dual-wavelength spectrophotometry for measurement of blood pressure and blood oxygen saturation is introduced in this paper, and the newly developed local pressurizing cuff unit and the photoplethysmography sensor unit are used in the system. A performance and comparative experiment using the system is carried out. The experimental result shows that the local pressurizing cuff can effectively depress artery at wrist, and the photoplethysmography sensor unit is suitable for detecting the absorption of venous and arterial blood to reflected light. The experimental result also shows that the system can accurately detect non-invasive blood pressure, arterial oxygen saturation and venous oxygen saturation.
Conductance catheterisation can be used to measure intraventicular volume during the cardiac cycle in continuous real time. However, for pressure-volume loop analysis in cardiology, the conductance catheterisation needs more to be developed. This paper presents use of a microelectronic pressure sensor to develop the conductance catheterisation. Results show how possible to use the developed conductance catheter, called pressure-volume (PV) catheter, to estimate cardiac function.
No standards are currently tagged "Blood Pressure Measurement"