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https://www.readbyqxmd.com/read/28227821/dual-modality-arterial-pulse-monitoring-system-for-continuous-blood-pressure-measurement
#1
Wen-Xuan Dai, Yuan-Ting Zhang, Jing Liu, Xiao-Rong Ding, Ni Zhao, Wen-Xuan Dai, Yuan-Ting Zhang, Jing Liu, Xiao-Rong Ding, Ni Zhao, Wen-Xuan Dai, Yuan-Ting Zhang, Xiao-Rong Ding, Ni Zhao, Jing Liu
Accurate and ambulatory measurement of blood pressure (BP) is essential for efficient diagnosis, management and prevention of cardiovascular diseases (CVDs). However, traditional cuff-based BP measurement methods provide only intermittent BP readings and can cause discomfort with the occlusive cuff. Although pulse transit time (PTT) method is promising for cuffless and continuous BP measurement, its pervasive use is restricted by its limited accuracy and requirement of placing sensors on multiple body sites...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227705/an-affordable-cuff-less-blood-pressure-estimation-solution
#2
Monika Jain, Niranjan Kumar, Sujay Deb, Monika Jain, Niranjan Kumar, Sujay Deb, Monika Jain, Sujay Deb, Niranjan Kumar
This paper presents a cuff-less hypertension pre-screening device that non-invasively monitors the Blood Pressure (BP) and Heart Rate (HR) continuously. The proposed device simultaneously records two clinically significant and highly correlated biomedical signals, viz., Electrocardiogram (ECG) and Photoplethysmogram (PPG). The device provides a common data acquisition platform that can interface with PC/laptop, Smart phone/tablet and Raspberry-pi etc. The hardware stores and processes the recorded ECG and PPG in order to extract the real-time BP and HR using kernel regression approach...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227455/a-method-for-extracting-respiratory-frequency-during-blood-pressure-measurement-from-oscillometric-cuff-pressure-pulses-and-korotkoff-sounds-recorded-during-the-measurement
#3
Diliang Chen, Fei Chen, Alan Murray, Dingchang Zheng, Diliang Chen, Fei Chen, Alan Murray, Dingchang Zheng, Dingchang Zheng, Alan Murray, Fei Chen, Diliang Chen
Respiratory frequency is an important physiological feature commonly used to assess health. However, the current measurements involve dedicated devices which not only increase the medical cost but also make health monitoring inconvenient. Earlier studies have shown that respiratory frequency could be extracted from electrocardiography (ECG) signal, but little was done to assess the possibility of extracting respiratory frequency from oscillometric cuff pressure pulses (OscP) or Korotkoff sounds (KorS), which are normally used for measuring blood pressure and more easily accessible than the ECG signal...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227449/comparison-of-methods-for-the-evaluation-of-nibp-from-pulse-transit-time
#4
L Peter, N Noury, M Cerny, I Nykl, L Peter, N Noury, M Cerny, I Nykl, L Peter, I Nykl, N Noury, M Cerny
Non-invasive blood pressure measurement (NIBP) is one of the most discussed topic in cardiovascular medicine. Currently continuous measurement of blood pressure is possible by invasive methods, which makes the measurement impractical for Doctors and uncomfortable for the patients. It is possible to use special devices to measure blood pressure noninvasively continuously but there are still some problems with long time monitoring and comfort for patient. Physiologically there is connection between electrical and mechanical heart functions, propagation of pulse wave and blood pressure value...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227244/towards-development-of-a-mobile-rf-doppler-sensor-for-continuous-heart-rate-variability-and-blood-pressure-monitoring
#5
Insoo Kim, Yusuf A Bhagat, Insoo Kim, Yusuf A Bhagat, Insoo Kim, Yusuf A Bhagat
The standard in noninvasive blood pressure (BP) measurement is an inflatable cuff device based on the oscillometric method, which poses several practical challenges for continuous BP monitoring. Here, we present a novel ultra-wide band RF Doppler radar sensor for next-generation mobile interface for the purpose of characterizing fluid flow speeds, and for ultimately measuring cuffless blood flow in the human wrist. The system takes advantage of the 7.1~10.5 GHz ultra-wide band signals which can reduce transceiver complexity and power consumption overhead...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227243/assessment-of-pre-ejection-period-in-ambulatory-subjects-using-seismocardiogram-in-a-wearable-blood-pressure-monitor
#6
Guanqun Zhang, Amber C Cottrell, Isaac C Henry, Devin B McCombie, Guanqun Zhang, Amber C Cottrell, Isaac C Henry, Devin B McCombie, Isaac C Henry, Devin B McCombie, Amber C Cottrell, Guanqun Zhang
The ability to monitor arterial blood pressure continuously with unobtrusive body worn sensors may provide a unique and potentially valuable assessment of a patient's cardiovascular health. Pulse wave velocity (PWV) offers an attractive method to continuously monitoring blood pressure. However, PWV technologies based on timing measurements between the ECG and a distal PPG suffer from inaccuracies on mobile patients due to the confounding influence of pre-ejection period (PEP). In this paper, we presented a wearable, continuous blood pressure monitor (ViSi Mobile) that can measure and track changes in PEP...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227242/noninvasive-and-continuous-blood-pressure-measurement-via-superficial-temporal-artery-tonometry
#7
Julia Canning, Kendall Helbert, Grigoriy Iashin, Jonathan Matthews, Jason Yang, Margaret K Delano, Charles G Sodini, Quan Zhang, Julia Canning, Kendall Helbert, Grigoriy Iashin, Jonathan Matthews, Jason Yang, Margaret K Delano, Charles G Sodini, Quan Zhang, Jason Yang, Margaret K Delano, Grigoriy Iashin, Jonathan Matthews, Charles G Sodini, Quan Zhang, Julia Canning, Kendall Helbert
The measurement of blood pressure is an important cardiovascular health assessment, yet the current set of methodologies is limited in resolution, repeatability, accuracy, simplicity, and safety. This paper presents the design and prototype implementation of a novel and easy-to-use medical device for noninvasive and continuous blood pressure monitoring through tonometry at the superficial temporal artery (STA). The device features a stable form factor inspired by over-ear headphones that adjusts easily from person to person using a combination prismatic and rotational joint...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227114/photoplethysmography-derivatives-and-pulse-transit-time-in-overnight-blood-pressure-monitoring
#8
Sobhan Salari Shahrbabaki, Beena Ahmed, Thomas Penzel, Dean Cvetkovic, Sobhan Salari Shahrbabaki, Beena Ahmed, Thomas Penzel, Dean Cvetkovic, Sobhan Salari Shahrbabaki, Beena Ahmed, Thomas Penzel, Dean Cvetkovic
Overnight continuous blood pressure measurement provides simultaneous monitoring of blood pressure and sleep architecture. By this means, we are able to investigate whether different sleep events are associated to blood pressure fluctuations. In this paper, we used the Pulse Transit Time (PTT) to develop and evaluate functions for measurement of blood pressure. We focused on the first and second derivatives of fingertip Photoplethysmography (PPG) recordings to detect PPG critical points. By applying R wave of ECG and PPG critical points, we created two PTT-based models for estimation of systolic and diastolic blood pressure (SBP and DBP)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227034/a-novel-algorithm-for-reducing-false-arrhythmia-alarms-in-intensive-care-units
#9
Chandan Srivastava, Sonal Sharma, Ali Jalali, Chandan Srivastava, Sonal Sharma, Ali Jalali, Ali Jalali, Chandan Srivastava, Sonal Sharma
Alarm fatigue in intensive care units (ICU) is one of the top healthcare issues in the US. False alarms in ICU will decrease the quality of care and staff response time over the alarms. Normally, false alarm will cause desensitization of the clinical staff which leads to warnings and misleading, if the triggered alarm is true. In this study, we have proposed a multi-model ensemble approach to reduce the false alarm rate in monitoring systems. We have used 750 patient records from PhysioNet database. At First arrhythmia based features from electrocardiogram (ECG), arterial blood pressure (ABP) and photoplethysmogram (PPG) features were extracted from the records...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226988/analysis-and-experimental-simulation-of-blood-pressure-signal-distortions-observed-on-intensive-care-patients-monitored-by-a-catheter-in-radial-artery
#10
Lisa Guigue, Carole Lavault, Francis Grimbert, Yves Lavault, Norbert Noury, Francois R Boucher, Lisa Guigue, Carole Lavault, Francis Grimbert, Yves Lavault, Norbert Noury, Francois R Boucher, Francois R Boucher, Carole Lavault, Lisa Guigue, Yves Lavault, Francis Grimbert, Norbert Noury
The follow-up of patients with hemodynamic instability in intensive care units most often requires blood pressure measurement using a fluid-filled catheter in the radial artery and a fluid-filled tubing connected to a pressure transducer. However, in this usual setup major distortions frequently occur that may alter the pressure signal. Underdamping and overdamping have been well described whereas other types of distortions, including attenuations and varied envelopes of pulse pressure, have been less studied...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226987/blood-viscosity-monitoring-during-cardiopulmonary-bypass-based-on-pressure-flow-characteristics-of-a-newtonian-fluid
#11
Shigeyuki Okahara, Zu Soh, Shinya Takahashi, Taijiro Sueda, Toshio Tsuji, Shigeyuki Okahara, Zu Soh, Shinya Takahashi, Taijiro Sueda, Toshio Tsuji, Zu Soh, Toshio Tsuji, Shinya Takahashi, Taijiro Sueda, Shigeyuki Okahara
We proposed a blood viscosity estimation method based on pressure-flow characteristics of oxygenators used during cardiopulmonary bypass (CPB) in a previous study that showed the estimated viscosity to correlate well with the measured viscosity. However, the determination of the parameters included in the method required the use of blood, thereby leading to high cost of calibration. Therefore, in this study we propose a new method to monitor blood viscosity, which approximates the pressure-flow characteristics of blood considered as a non-Newtonian fluid with characteristics of a Newtonian fluid by using the parameters derived from glycerin solution to enable ease of acquisition...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226610/data-driven-estimation-of-blood-pressure-using-photoplethysmographic-signals
#12
Shi Chao Gao, Peter Wittek, Li Zhao, Wen Jun Jiang, Shi Chao Gao, Peter Wittek, Li Zhao, Wen Jun Jiang, Shi Chao Gao, Peter Wittek, Li Zhao, Wen Jun Jiang
Noninvasive measurement of blood pressure by optical methods receives considerable interest, but the complexity of the measurement and the difficulty of adjusting parameters restrict applications. We develop a method for estimating the systolic and diastolic blood pressure using a single-point optical recording of a photoplethysmographic (PPG) signal. The estimation is data-driven, we use automated machine learning algorithms instead of mathematical models. Combining supervised learning with a discrete wavelet transform, the method is insensitive to minor irregularities in the PPG waveform, hence both pulse oximeters and smartphone cameras can record the signal...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226593/dynamic-cerebral-autoregulation-in-young-athletes-following-concussion
#13
Kyriaki Kostoglou, Alexander D Wright, Jonathan D Smirl, Kelsey Bryk, Paul van Donkelaar, Georgios D Mitsis, Kyriaki Kostoglou, Alexander D Wright, Jonathan D Smirl, Kelsey Bryk, Paul van Donkelaar, Georgios D Mitsis, Paul van Donkelaar, Alexander D Wright, Kyriaki Kostoglou, Jonathan D Smirl, Kelsey Bryk, Georgios D Mitsis
The purpose of this study was to examine cerebral autoregulation (CA) in young athletes experiencing concussion. The subjects were monitored and repeatedly tested 72 hours, 2 weeks and 1 month post-injury. Mean arterial blood pressure (MABP), end-tidal partial pressure of carbon dioxide (PETCO2) and cerebral blood flow velocity (CBFV) in the middle and posterior cerebral arteries were monitored during mental activation paradigms. In order to characterize CA we employed autoregressive models with exogenous inputs (ARX) and impulse response models based on the Laguerre expansion technique (LET)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226574/a-temperature-controlled-glove-with-non-invasive-arterial-pulse-sensing-for-active-neuro-vascular-assessment
#14
Andrew M Carek, Omer T Inan, Andrew M Carek, Omer T Inan, Andrew M Carek, Omer T Inan
A non-invasive, active neuro-vascular assessment system was developed using a modified temperature-controlled glove and feedback techniques. The glove incorporates local heating and cooling of the hand using multi-point skin temperature measurements as feedback, and thereby induces local and central mechanisms involved in thermoregulation. Electrocardiogram (ECG), photoplethysmogram (PPG) and non-invasive finger-cuff based blood pressure (BP) measurements were used to monitor electrophysiology and hemodynamic changes in response to temperature modulation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226571/cuff-less-ppg-based-continuous-blood-pressure-monitoring-a-smartphone-based-approach
#15
Aman Gaurav, Maram Maheedhar, Vijay N Tiwari, Rangavittal Narayanan, Aman Gaurav, Maram Maheedhar, Vijay N Tiwari, Rangavittal Narayanan, Maram Maheedhar, Rangavittal Narayanan, Vijay N Tiwari, Aman Gaurav
Cuff-less estimation of systolic (SBP) and diastolic (DBP) blood pressure is an efficient approach for non-invasive and continuous monitoring of an individual's vitals. Although pulse transit time (PTT) based approaches have been successful in estimating the systolic and diastolic blood pressures to a reasonable degree of accuracy, there is still scope for improvement in terms of accuracies. Moreover, PTT approach requires data from sensors placed at two different locations along with individual calibration of physiological parameters for deriving correct estimation of systolic and diastolic blood pressure (BP) and hence is not suitable for smartphone deployment...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226549/an-ict-and-mobile-health-integrated-approach-to-optimize-patients-education-on-hypertension-and-its-management-by-physicians-the-patients-optimal-strategy-of-treatment-post-pilot-study
#16
Fabio Albini, Xiaoqiu Liu, Camilla Torlasco, Davide Soranna, Andrea Faini, Renata Ciminaghi, Ada Celsi, Matteo Benedetti, Antonella Zambon, Marco di Rienzo, Gianfranco Parati, Fabio Albini, Xiaoqiu Liu, Camilla Torlasco, Davide Soranna, Andrea Faini, Renata Ciminaghi, Ada Celsi, Matteo Benedetti, Antonella Zambon, Marco di Rienzo, Gianfranco Parati, Renata Ciminaghi, Marco di Rienzo, Davide Soranna, Ada Celsi, Gianfranco Parati, Fabio Albini, Antonella Zambon, Xiaoqiu Liu, Andrea Faini, Camilla Torlasco, Matteo Benedetti
INTRODUCTION: Uncontrolled hypertension is largely attributed to unsatisfactory doctor's engagement in its optimal management and to poor patients' compliance to therapeutic interventions. ICT and mobile Health solutions might improve these conditions, being widely available and providing highly effective communication strategies. OBJECTIVE: To evaluate whether ICT and mobile Health tools are able to improve hypertension control by improving doctors' engagement and by increasing patients' education and involvement, and their compliance to lifestyle modification and prescribed drug therapy...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226486/a-study-for-the-development-of-k-sound-based-automatic-blood-pressure-device-using-pvdf-film
#17
Xiong Li, Gayathri V Panicker, Jae J Im, Xiong Li, Gayathri V Panicker, Jae J Im, Gayathri V Panicker, Xiong Li, Jae J Im
Traditional indirect standard measurement of blood pressure is based on hearing Korotkoff sounds to determine systolic and diastolic blood pressure. However, the problem exists among different types of automatic blood pressure monitoring devices because of no standard algorithm for estimating accurate blood pressure values. Aim of the study was to develop an automatic blood pressure measurement device based on Korotkoff sounds. PVDF(poliyvinylidene fluoride) film was used as a contact microphone to detect Korotkoff sounds on the brachial artery, and pressure sensor was used to obtain cuff pressure...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226475/a-telemonitoring-platform-for-the-investigation-of-blood-pressure-profiles-in-pacemaker-patients
#18
G Calcagnini, E Mattei, R Quaglione, E De Ruvo, G Biancalana, G Pavone, A Gargaro, L Calo, F Ammirati, F Censi, G Calcagnini, E Mattei, R Quaglione, E De Ruvo, G Biancalana, G Pavone, A Gargaro, L Calo, F Ammirati, F Censi, A Gargaro, F Ammirati, R Quaglione, L Calo, G Pavone, F Censi, E Mattei, G Calcagnini, E De Ruvo, G Biancalana
Rate responsive pacemakers (PM) use different strategies to adapt the patient paced rate, with the aim of having the best hemodynamic performance in response to internal or external conditions. Closed-loop stimulation (CLS) uses intracardiac impedance as a sensor principle. The evaluation of impact of different pacing modalities and technologies on the blood pressure (BP) profiles is mainly investigated in short-term laboratory settings, mainly due to the need of reliable daily-based BP values. The impact of CLS pacing on systemic blood pressure (BP) has been studied on short term basis, but data on long term effects are scarse...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226362/ambulatory-arterial-stiffness-indexes-in-cushing-s-syndrome
#19
Marialberta Battocchio, Andrea Rebellato, Andrea Grillo, Francesca Dassie, Pietro Maffei, Stella Bernardi, Bruno Fabris, Renzo Carretta, Francesco Fallo
Long-standing exposure to endogenous cortisol excess is associated with high cardiovascular risk. The aim of our study was to investigate arterial stiffness, which has been recognized as an independent predictor of adverse cardiovascular outcome, in a group of patients with Cushing's syndrome. Twenty-four patients with Cushing's syndrome (3 males, mean age 49┬▒13 years; 20 pituitary-dependent Cushing's disease and 4 adrenal adenoma) underwent 24-h ambulatory blood pressure monitoring (ABPM) and evaluation of cardiovascular risk factors...
February 22, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et M├ętabolisme
https://www.readbyqxmd.com/read/28225488/association-between-beat-to-beat-blood-pressure-variability-and-vascular-elasticity-in-normal-young-adults-during-the-cold-pressor-test
#20
Yufa Xia, Dan Wu, Zhifan Gao, Xin Liu, Qian Chen, Lijie Ren, Wanqing Wu
The beat-to-beat blood pressure (BP) monitoring parameters, such as average beat-to-beat BP, BP variability (BPV), could have an influence on the vascular elasticity. This study hypothesized that the elevated beat-to-beat BPV could evoke the reduction of the vascular elasticity independent of BP levels. We measured the beat-to-beat BP recordings and total arterial compliance (TAC), which was used to assess the vascular elasticity, in 80 young healthy adults during the cold pressor test (CPT). The CPT included 3 phases: baseline phase, cold stimulus phase, recovery phase...
February 2017: Medicine (Baltimore)
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