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Measuring blood pressure without any devices

Chan-Il Kim, Jong-Ha Lee
In these days, wearable devices have been developed for effectively measuring biological data. However, these devices have tissue allege and noise problem. To solve these problems, biometric measurement based on a non-contact method, such as face image sequencing is developed. This makes it possible to measure biometric data without any operation and side effects. However, it is impossible for a remote center to identify the person whose data are measured by the novel methods. In this paper, we propose the novel non-contact heart rate and blood pressure imaging system, Deep Health Eye...
April 25, 2018: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
Jean-Louis Vincent, Sharon Einav, Rupert Pearse, Samir Jaber, Peter Kranke, Frank J Overdyk, David K Whitaker, Federico Gordo, Albert Dahan, Andreas Hoeft
: Patient monitoring on low acuity general hospital wards is currently based largely on intermittent observations and measurements of simple variables, such as blood pressure and temperature, by nursing staff. Often several hours can pass between such measurements and patient deterioration can go unnoticed. Moreover, the integration and interpretation of the information gleaned through these measurements remains highly dependent on clinical judgement. More intensive monitoring, which is commonly used in peri-operative and intensive care settings, is more likely to lead to the early identification of patients who are developing complications than is intermittent monitoring...
May 2018: European Journal of Anaesthesiology
Ting-Tse Lin, Chia-Ling Wang, Min-Tsun Liao, Chao-Lun Lai
BACKGROUND: The accuracy of heart rate (HR) measurement by automated blood pressure monitors in patients with atrial fibrillation (AF) remains unclear. The authors investigate the agreement between HR measurements by 2 automated devices and human counting in patients with AF. METHODS: In 47 patients with persistent AF, HR was recorded using 2 automated blood pressure monitors: Omron M5-I and Microlife BPA100 Plus. Human counting of HR by a stethoscope was used as the reference...
February 16, 2018: Journal of Cardiovascular Nursing
Fang Luo, Djillali Annane, David Orlikowski, Li He, Mi Yang, Muke Zhou, Guan J Liu
BACKGROUND: Acute respiratory failure is a common life-threatening complication of acute onset neuromuscular diseases, and may exacerbate chronic hypoventilation in patients with neuromuscular disease or chest wall disorders. Standard management includes oxygen supplementation, physiotherapy, cough assistance, and, whenever needed, antibiotics and intermittent positive pressure ventilation. Non-invasive mechanical ventilation (NIV) via nasal, buccal or full-face devices has become routine practice in many centres...
December 4, 2017: Cochrane Database of Systematic Reviews
Jorge López, Sarah N Fernández, Rafael González, María J Solana, Javier Urbano, Blanca Toledo, Jesús López-Herce
AIMS: Chest compressions (CC) during cardiopulmonary resuscitation are not sufficiently effective in many circumstances. Mechanical CC could be more effective than manual CC, but there are no studies comparing both techniques in children. The objective of this study was to compare the effectiveness of manual and mechanical chest compressions with Thumper device in a pediatric cardiac arrest animal model. MATERIAL AND METHODS: An experimental model of asphyxial cardiac arrest (CA) in 50 piglets (mean weight 9...
2017: PloS One
Diane Nzelu, Felicia Yeung, Delphine Couderq, Andrew Shennan, Nikos A Kametas
OBJECTIVES: Automated blood pressure devices are frequently introduced in maternity care without prior validation for their accuracy in pregnancy. Our objectives were to, firstly, establish the accuracy in pregnancy of a locally used device (Welch Allyn 300) and, secondly, to audit its impact on the diagnosis and treatment of hypertension. STUDY DESIGN: Validation study: The device was evaluated using the grading criteria of the European Society of Hypertension International Protocol (ESH-IP) (2010)...
May 3, 2017: Pregnancy Hypertension
Karim Lakhal, Stephan Ehrmann, Thierry Boulain
Although its reliability is often questioned, noninvasive BP (NIBP)-monitoring with an oscillometric arm cuff is widely used, even in critically ill patients in shock. When correctly implemented, modern arm NIBP devices can provide accurate and precise measurements of mean BP, as well as clinically meaningful information such as identification of hypotension and hypertension and monitoring of patient response to therapy. Even in specific circumstances such as arrhythmia, hypotension, vasopressor infusion, and possibly in obese patients, arm NIBP may be useful, contrary to widespread belief...
April 2018: Chest
Anthony O Etyang, Christopher K Wandabwa, Sailoki Kapesa, Esther Muthumbi, Emily Odipo, Marylene Wamukoya, Nicholas Ngomi, Tilahun Haregu, Catherine Kyobutungi, Thomas N Williams, Johnstone Makale, Alex Macharia, J Kennedy Cruickshank, Liam Smeeth, J Anthony G Scott
The potential association between sickle cell trait (SCT) and increased arterial stiffness/blood pressure (BP) has not been evaluated in detail despite its association with stroke, sudden death, and renal disease. We performed 24-hour ambulatory BP monitoring and arterial stiffness measurements in adolescents raised in a malaria-free environment in Kenya. Between December 2015 and June 2016, 938 randomly selected adolescents (ages 11-17 years) who had been continuous residents of Nairobi from birth were invited to participate in the study...
February 1, 2018: American Journal of Epidemiology
Fernando Grover-Páez, Ernesto G Cardona-Muñoz, David Cardona-Müller, Víctor H Guzmán-Saldívar, Mariana Rodríguez-De la Cerda, Mayra B Jiménez-Cázarez, Sylvia E Totsuka-Sutto, Guillermo A Alanis-Sánchez, Carlos G Ramos-Becerra
OBJECTIVE: The aim of this study was to determine the accuracy of the Omron HEM-7320-LA with Intelli Wrap technology cuff HEM-FL1 for self-measurement and clinic blood pressure (BP) measurement according to the European Society of Hypertension International Protocol revision 2010. PARTICIPANTS AND METHODS: The evaluation was performed in 39 individuals. The mean age of the participants was 47.9±14 years; systolic BP was 145.2±24.3 mmHg (range: 97-190), diastolic BP was 90...
December 2017: Blood Pressure Monitoring
Vidya Sunil Joshi, Sunil Subhash Joshi, Maruthy
INTRODUCTION: Warmth to the extremity is known to improve the cutaneous blood flow and tissue perfusion. Oxygen is essential for healing of chronic wounds. Topical oxygen therapy has become standard therapy in management of lower extremity wounds. A combination of local heat and oxygen is likely to be beneficial in many clinical scenarios of non-healing wounds without any systemic effects. AIM: To evaluate the local and systemic effects of the exposure of extremity to warm oxygen in healthy volunteers...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
Diego Antonino, André L Teixeira, Paulo M Maia-Lopes, Mayara C Souza, Jeann L Sabino-Carvalho, Aaron R Murray, Jim Deuchars, Lauro C Vianna
BACKGROUND: Despite positive outcomes of transcutaneous vagus nerve stimulation (tVNS) via the auricular branch of the vagus nerve (ABVN), the mechanisms underlying these outcomes remain unclear. Additionally, previous studies have not been controlled the possible placebo effects of tVNS. OBJECTIVE: To test the hypothesis that tVNS acutely improves spontaneous cardiac baroreflex sensitivity (cBRS) and autonomic modulation, and that these effects are specific to stimulation of ABVN...
May 19, 2017: Brain Stimulation
Anthony O Etyang, Christopher Khayeka-Wandabwa, Sailoki Kapesa, Esther Muthumbi, Emily Odipo, Marylene Wamukoya, Nicholas Ngomi, Tilahun Haregu, Catherine Kyobutungi, Metrine Tendwa, Johnstone Makale, Alex Macharia, J Kennedy Cruickshank, Liam Smeeth, J Anthony G Scott, Thomas N Williams
BACKGROUND: Recent studies have discovered that α-globin is expressed in blood vessel walls where it plays a role in regulating vascular tone. We tested the hypothesis that blood pressure (BP) might differ between normal individuals and those with α+ thalassemia, in whom the production of α-globin is reduced. METHODS AND RESULTS: The study was conducted in Nairobi, Kenya, among 938 adolescents aged 11 to 17 years. Twenty-four-hour ambulatory BP monitoring and arterial stiffness measurements were performed using an arteriograph device...
April 5, 2017: Journal of the American Heart Association
Noa Kallioinen, Andrew Hill, Mark S Horswill, Helen E Ward, Marcus O Watson
BACKGROUND: To interpret blood pressure (BP) data appropriately, healthcare providers need to be knowledgeable of the factors that can potentially impact the accuracy of BP measurement and contribute to variability between measurements. METHODS: A systematic review of studies quantifying BP measurement inaccuracy. Medline and CINAHL databases were searched for empirical articles and systematic reviews published up to June 2015. Empirical articles were included if they reported a study that was relevant to the measurement of adult patients' resting BP at the upper arm in a clinical setting (e...
March 2017: Journal of Hypertension
Eric A Finkelstein, Benjamin A Haaland, Marcel Bilger, Aarti Sahasranaman, Robert A Sloan, Ei Ei Khaing Nang, Kelly R Evenson
BACKGROUND: Despite the increasing popularity of activity trackers, little evidence exists that they can improve health outcomes. We aimed to investigate whether use of activity trackers, alone or in combination with cash incentives or charitable donations, lead to increases in physical activity and improvements in health outcomes. METHODS: In this randomised controlled trial, employees from 13 organisations in Singapore were randomly assigned (1:1:1:1) with a computer generated assignment schedule to control (no tracker or incentives), Fitbit Zip activity tracker, tracker plus charity incentives, or tracker plus cash incentives...
December 2016: Lancet Diabetes & Endocrinology
Laila Hubbert, Jacek Baranowski, Baz Delshad, Henrik Ahn
After implantation of a continuous-flow left ventricular assist device (LVAD), left atrial pressure (LAP) monitoring allows for the precise management of intravascular volume, inotropic therapy, and pump speed. In this case series of 4 LVAD recipients, we report the first clinical use of this wireless pressure sensor for the long-term monitoring of LAP during LVAD support. A wireless microelectromechanical system pressure sensor (Titan, ISS Inc., Ypsilanti, MI) was placed in the left atrium in four patients at the time of LVAD implantation...
September 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
C Chi, S Yu, B Bai, K Wang, L Wang, Y Lu, Y Zhang, Y Xu
OBJECTIVE: Central blood pressure (BP) is reported to associate with target organ damages (TODs) better than brachial BP. However, data regarding the association of TODs with central and brachial BP in the community-dwelling health elderly are scare. We therefore hypothesized that TODs are better associated with central than brachial blood pressure (BP) in the elderly community-based population, with considering all hypertensive TODs, namely left ventricular hypertrophy (LVH), left ventricular (LV) diastolic dysfunction (DD), carotid plaque, arteriosclerosis and microalbuminuria...
September 2016: Journal of Hypertension
Kazuomi Kario, Naoko Tomitani, Yuri Matsumoto, Haruna Hamasaki, Yukie Okawara, Maiko Kondo, Ryoko Nozue, Hiromi Yamagata, Ayako Okura, Satoshi Hoshide
Asians have specific characteristics of hypertension (HTN) and its relationship with cardiovascular disease. The morning surge in blood pressure (BP) in Asians is more extended, and the association slope between higher BP and the risk for cardiovascular events is steeper in this population than in whites. Thus, 24-hour BP control including at night and in the morning is especially important for Asian patients with HTN. There are 3 components of "perfect 24-hour BP control": the 24-hour BP level, adequate dipping of nocturnal BP (dipper type), and adequate BP variability such as the morning BP surge...
March 2016: Annals of Global Health
Whitney Laurel Quong, Adrian Ting-Hei Fung, Rollin Yinglin Yu, York Nien-Hsiung Hsiang
OBJECTIVE: The purpose of this study was to measure the toe-brachial index (TBI) in healthy young adults and to compare it with the accepted reference range. METHODS: Medical students from the undergraduate classes at the University of British Columbia were prospectively recruited. Participants were surveyed on physical parameters (height, weight), lifestyle factors (physical activity and type, smoking status, alcohol consumption), and medical history (current medications, medical conditions, family history)...
March 2016: Journal of Vascular Surgery
Teba Alnima, Emilie J B M Goedhart, Randy Seelen, Chris P M van der Grinten, Peter W de Leeuw, Abraham A Kroon
Carotid baroreflex activation therapy produces a sustained fall in blood pressure in patients with resistant hypertension. Because the activation electrodes are implanted at the level of the carotid sinus, it is conceivable that the nearby located carotid body chemoreceptors are stimulated as well. Physiological stimulation of the carotid chemoreceptors not only stimulates respiration but also increases sympathetic activity, which may counteract the effects of baroreflex activation. The aim of this exploratory study is to investigate whether there is concomitant carotid chemoreflex activation during baroreflex activation therapy...
June 2015: Hypertension
Robert J Freercks, Charles R Swanepool, Kristy L Turest-Swartz, Henri R O Carrara, Sulaiman El Moosa, Anthony S Lachman, Brian L Rayner
INTRODUCTION: Central aortic systolic pressure (CASP) strongly predicts cardiovascular outcomes. We undertook to measure ambulatory CASP in 74 prevalent dialysis patients using the BPro (HealthStats, Singapore) device. We also determined whether coronary or abdominal aortic calcification was associated with changes in CASP and whether interdialytic CASP predicted ambulatory measurement. METHODS: All patients underwent computed tomography for coronary calcium score, lateral abdominal radiography for aortic calcium score, echocardiography for left ventricular mass index and ambulatory blood pressure measurement using BPro calibrated to brachial blood pressure...
January 2014: Cardiovascular Journal of Africa
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