photoplethysmography

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Photoplethysmography
Author : Joseph Lionel Higgins
Publisher : N.A
Release Date : 1988
ISBN 10 :
Pages : 278 pages
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Noninvasive Measurement of the Endothelial System Activity Using Calibrated Photoplethysmography
Author : Brian Patrick Watschke
Publisher : N.A
Release Date : 2000
ISBN 10 :
Pages : 184 pages
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4th Kuala Lumpur International Conference on Biomedical Engineering 2008
Author : Noor Azuan Abu Osman,Prof. Ir. Dr Fatimah Ibrahim,Wan Abu Bakar Wan Abas,Herman Shah Abdul Rahman,Hua Nong Ting
Publisher : Springer Science & Business Media
Release Date : 2008-07-30
ISBN 10 : 3540691391
Pages : 1844 pages
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It is with great pleasure that we present to you a collection of over 200 high quality technical papers from more than 10 countries that were presented at the Biomed 2008. The papers cover almost every aspect of Biomedical Engineering, from artificial intelligence to biomechanics, from medical informatics to tissue engineering. They also come from almost all parts of the globe, from America to Europe, from the Middle East to the Asia-Pacific. This set of papers presents to you the current research work being carried out in various disciplines of Biomedical En- neering, including new and innovative researches in emerging areas. As the organizers of Biomed 2008, we are very proud to be able to come-up with this publication. We owe the success to many individuals who worked very hard to achieve this: members of the Technical Committee, the Editors, and the Inter- tional Advisory Committee. We would like to take this opportunity to record our thanks and appreciation to each and every one of them. We are pretty sure that you will find many of the papers illuminating and useful for your own research and study. We hope that you will enjoy yourselves going through them as much as we had enjoyed compiling them into the proceedings. Assoc. Prof. Dr. Noor Azuan Abu Osman Chairperson, Organising Committee, Biomed 2008

Abstract: Heart rate (HR) is a valuable and widespread measure for physical training programs, although its description of conditioning is limited to the cardiac response to exercise. More comprehensive measures of exercise adaptation include cardiac output (Q̇), stroke volume (SV) and oxygen uptake (V̇O2 ), but these physiological parameters can be measured only with cumbersome equipment installed in clinical settings. In this work, we explore the ability of pulse transit time (PTT) to represent a valuable pairing with HR for indirectly estimating Q̇, SV and V̇O2 non-invasively. PTT was measured as the time interval between the peak of the electrocardiographic (ECG) R -wave and the onset of the photoplethysmography (PPG) waveform at the periphery (i.e. fingertip) with a portable sensor. Fifteen healthy young subjects underwent a graded incremental cycling protocol after which HR and PTT were correlated with Q̇, SV and V̇O2 using linear mixed models. The addition of PTT significantly improved the modeling of Q̇, SV and V̇O2 at the individual level ( for SV, 0.548 for Q̇, and 0.771 for V̇O2 ) compared to predictive models based solely on HR ( for SV, 0.503 for Q̇, and 0.745 for V̇O2 ). While challenges in sensitivity and artifact rejection exist, combining PTT with HR holds potential for development of novel wearable sensors that provide exercise assessment largely superior to HR monitors.

Robot Motion and Control
Author : Krzysztof R. Kozlowski
Publisher : Springer
Release Date : 2006-07-26
ISBN 10 : 1846284058
Pages : 404 pages
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This book presents recent results in robot motion and control. Twenty papers presented at the Fourth International Workshop on Robot Motion and Control held in 2004 have been expanded. The authors of these papers were carefully selected and represent leading institutions in this field. The book covers nonlinear control of nonholonomic systems and legged robots as well as trajectory planning for these systems, topics not covered in previous books.

Phlebology ’95
Author : David Negus,Georges Jantet,Philip D. Coleridge-Smith
Publisher : Springer
Release Date : 2013-12-21
ISBN 10 : 1447130952
Pages : 1196 pages
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The management of diseases of the venous system has evolved rapidly over the last forty years. Much of this development occured since the creation of the Union Internationale de Phlebologie (UIP) in 1959 which has helped to bring together those involved in the management of venous diseases. The Proceedings of the XII World Congress of the UIP will reflect the diversity of disciplines involved (such as phlebologists, dermatologists, surgeons, physiologists and radiologists) as well as new methods of investigation, prevention and the latest research on the topic.

14th Nordic-Baltic Conference on Biomedical Engineering and Medical Physics
Author : Alexei Katashev,Yuri Dekhtyar,Janis Spigulis
Publisher : Springer Science & Business Media
Release Date : 2008-07-30
ISBN 10 : 354069367X
Pages : 648 pages
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14th Nordic – Baltic Conference on Biomedical Engineering and Medical Physics – NBC-2008 – brought together scientists not only from the Nordic – Baltic region, but from the entire world. This volume presents the Proceedings of this international conference, jointly organized by the Latvian Medical Engineering and Physics Society, Riga Technical University and University of Latvia in close cooperation with International Federation of Medical and Biological Engineering (IFMBE) The topics covered by the Conference Proceedings include: Biomaterials and Tissue Engineering; Biomechanics, Artificial Organs, Implants and Rehabilitation; Biomedical Instrumentation and Measurements, Biosensors and Transducers; Biomedical Optics and Lasers; Healthcare Management, Education and Training; Information Technology to Health; Medical Imaging, Telemedicine and E-Health; Medical Physics; Micro- and Nanoobjects, Nanostructured Systems, Biophysics

Advances in Respiratory Care of the Newborn, An Issue of Clinics in Perinatology - E-Book
Author : Judy L. Aschner,Richard A. Polin
Publisher : Elsevier Health Sciences
Release Date : 2012-10-01
ISBN 10 : 1455747408
Pages : 240 pages
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Top authors were selected to write clinical review articles devoted to Advances in Respiratory Care of the Newborn. Articles are devoted to: Effects of chorioamnionitis on lung function and growth; Delivery room respiratory management of the term and preterm infant; CPAP or INSURE for initial respiratory support; Which CPAP is best?; Non-invasive respiratory support; Volume limited and volume targeted ventilation; Weaning from mechanical ventilation; Predictors of bronchopulmonary dysplasia; Brain Injury in Chronically Ventilated Preterm Neonates: Collateral Damage Related to Ventilation Strategy; The Pulmonary Circulation in Respiratory Failure; Novel methods for assessment of right heart structure and function in pulmonary hypertension; Control of oxygenation; Non-invasive monitoring by photoplethysmography; Cell-based strategies to reconstitute lung function in infants with severe bronchopulmonary dysplasia; Permissive Hypercapnea; Prevention of BPD with Nitric Oxide; and Aero-digestive pulmonary disorders in the neonate.

Seamless Healthcare Monitoring
Author : Toshiyo Tamura,Wenxi Chen
Publisher : Springer
Release Date : 2017-11-24
ISBN 10 : 331969362X
Pages : 469 pages
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This book shares the knowledge of active and prestigious worldwide researchers and scholars in the field of healthcare monitoring as authors investigate historical developments, summarize latest advancements, and envision future prospects on wearable, attachable, and invisible devices that monitor diverse physiological information. The coverage of the book spans multiple disciplines, from biomechanics, to bioelectricity, biochemistry, biophysics and biomaterials. There is also wide coverage of various physical and chemical quantities such as electricity, pressure, flow, motion, force, temperature, gases, and biomarkers. Each chapter explores the background of a specific monitoring device, as well as its physical and chemical principles and instrumentation, signal processing and data analysis, achieved outcomes and application scenarios, and future research topics. There are chapters on: Electrocardiograms, electroencephalograms, and electromyograms Measurement of flow phenomenon Latest wearable technologies for the quantification of human motion Various forms of wearable thermometers Monitoring of gases and chemical substances produced during metabolism...and more! This book is appropriate and accessible for students and scientists, as well as researchers in biomedical engineering, computer engineers, healthcare entrepreneurs, administrative officers, policy makers, market vendors, and healthcare personnel. It helps to provide us with insights into future endeavors, formulate innovative businesses and services, and will help improve people’s health and quality of life.

Development of a Photoplethysmography-based Forehead-type Physiological Signal Monitoring System
Author : 林唐暐
Publisher : N.A
Release Date : 2018
ISBN 10 :
Pages : 53 pages
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Bioengineering of the Skin
Author : Enzo Berardesca,Peter Elsner,Howard I. Maibach
Publisher : CRC Press
Release Date : 1994-10-27
ISBN 10 : 9780849383717
Pages : 320 pages
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This book focuses on the objective measurement of two major parameters of skin function: blood flow and erythema.

Sclerotherapy E-Book
Author : Mitchel P. Goldman,Robert A Weiss
Publisher : Elsevier Health Sciences
Release Date : 2011-01-31
ISBN 10 : 0323081185
Pages : 416 pages
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Sclerotherapy: Treatment of Varicose and Telangiectatic Leg Veins, by Drs. Mitchel P. Goldman, Jean-Jerome Guex, and Robert A Weiss, equips you to implement the latest cosmetic procedures for the treatment of varicose and telangiectatic leg veins. Completely revised with contributions from U.S.-based and international authorities, this classic reference is packed with everything you need to know about sclerotherapy, and provides extensive discussions of the latest techniques, solutions, and possible complications. Case studies and detailed color illustrations offer practical, step-by-step visual guidance as well as expert hints and tips for implementing the latest cosmetic procedures into your practice including foam sclerotherapy, endovenous radiofrequency (RF) and laser closure, ambulatory phlebectomy and laser treatment of spider telangiectasia. You can also access the full content and videos online at www.expertconsult.com. Optimize outcomes and improve your surgical, injection and laser techniques with comprehensive, visual guidance about common pitfalls and "tricks of the trade" from practically minded, technically skilled, hands-on experts. Implement the latest approaches with completely updated chapters reflecting the most recent advances in sclerotherapy and surgical treatment of varicose and telangiectatic leg veins. See how to perform a variety of key procedures demonstrating endovenous radiofrequency closure, CoolTouch endovenous ablation, cross polarization visualization, PPG digital measuring, sclerotherapy of the lateral venous system showing reflux, foam sclerotherapy, telangiectatic matting, ambulatory phlebectomy, and draining of intravascular coagulum. Apply the best practices and global perspectives from a newly reorganized team of U.S.-based and international authors and contributors. Access the complete contents from any computer at www.expertconsult.com, complete with the full text and entire image bank.

Objective: To evaluate the utility of a transcranial brain photoplethysmography parameter as a potential marker for patients with multiple sclerosis. Methods: We investigated 38 patients affected by multiple sclerosis, according to the revised McDonald criteria (12 males and 26 females, mean age 41.1 ± 8.5 years, Expanded Disability Status Scale mean value 2.6 ± 2.1) and compared them with 20 age- and sex-matched healthy controls. By means of transcranial brain photoplethysmography, a safe and non-invasive technology, we measured the increase in cerebral blood volume during compression for 10 s of the internal jugular veins of both sides in sitting position. Results: The cerebral blood volume increase was significantly smaller in the multiple sclerosis patients (left frontal cortex: −58%, p

Rutherford's Vascular Surgery E-Book
Author : Jack L. Cronenwett,K. Wayne Johnston
Publisher : Elsevier Health Sciences
Release Date : 2014-03-12
ISBN 10 : 0323243061
Pages : 114 pages
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Published in association with the Society for Vascular Surgery, Rutherford’s Vascular Surgery presents state-of-the-art updates on all aspects of vascular health care. Extensively revised by many new authors to meet the needs of surgeons, interventionalists, and vascular medicine specialists, this medical reference book incorporates medical, endovascular and surgical treatment, as well as diagnostic techniques, decision making and fundamental vascular biology. Consult this title on your favorite e-reader, conduct rapid searches, and adjust font sizes for optimal readability. Master the latest developments, techniques, and approaches with thorough updates on endovascular applications, vascular access, imaging, non-operative management, and much more. View clinical and physical findings and operative techniques more vividly with a full-color layout and images. Get answers you can depend on. Rutherford's delivers the world’s most trusted information on all major areas of vascular health care, is written by international experts, and includes up-to-date bibliographies and annotated recommended references. Discover emerging techniques in rapidly advancing topics, with special emphasis on endovascular coverage, vascular imaging, angiography, CT and MRI. Explore brand new chapters on dialysis catheters, renovascular disease, and management of branches during endovascular aneurysm. Stay up-to-date with the latest coverage of endovascular procedures that reflects the changing practices and techniques in vascular surgery. Access videos at Expert Consult.

1 - Feasibility of the Finger Photoplethysmography to Give Feedback on Chest Compression Rate
Author : Jon Urteaga
Publisher : N.A
Release Date : 2017
ISBN 10 :
Pages : 329 pages
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Purpose: The photoplethysmogram (PPG) recorded using finger pulse oximeter estimates the oxygen saturation. During out-of-hospital cardiac arrest (OHCA) the PPG waveform shows amplitude changes with chest compressions (CC. The aim of this study was to analyze the feasibility of using the finger PPG to provide feedback on CC rate during OHCA.Materials and methods: Records of 46 patients were included, comprising the PPG and compression depth signals extracted from Zoll E-Series defibrillator files. They were acquired by the DFW Center for Resuscitation Research (UTSW, Dallas) and the Emergency Medical Services agencies from the Resuscitation Outcomes Consortiumu2019s Portland site (OHSU). An automatic algorithm analyzed the PPG every 5s and detected useful PPG, presence of CCs and CC-rate. The compression depth signal (acquired by the CPR-pad-z) was used as the reference signal to simultaneously compute the rate and check for presence of CCs. The percentage of useful PPG, and sensitivity (SE)/positive predictive value (PPV) for detecting CCs were computed. The CC-rate error was assessed as mean(standard deviation) and 95% level of agreement (LOA, Bland-Altman). A feedback system on the CC-rate was implemented for the intervals where PPG was available, and evaluated in terms of SE, PPV and specificity (SP) to trigger alarms for CC-rates out of the range 90-120 CC/min.Results: A total of 420 min (9.1u00b17.6 min per episode) were processed. A total of 4971 segments were analyzed, 4319 including CCs with rate 116 (15) CC/min. The PPG signal was not available 17% of the time. The SE/PPV to detect CCs were 86.2/95.4%, and the CC-rate error 2.4 (6.3) CC/min (see figure). The SE/SP/PPV for the feedback system to trigger alarms were 83.6/92.4/85.3% respectively. Conclusions: When available, the finger PPG signal reliably gives feedback on CC rate.

Quantitative Measurement of Venous Incompetence
Author : Paul S. Van Bemmelen
Publisher : R. G. Landes
Release Date : 1992
ISBN 10 :
Pages : 106 pages
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This text reviews the latest information available on venous pathophysiology and its applications to the diagnostic methods for patients with chronic venous disorders. The book emphasizes non-invasive methods, particularly ultrasound. A special feature is the book's detailed description of the colour flow duplex method with distal cuff deflation, which can serve as an effective guide for anyone using this method in the vascular laboratory or office.

Essentials of Internal Medicine in Clinical Podiatry
Author : Bennett G. Zier
Publisher : W B Saunders Company
Release Date : 1990
ISBN 10 : 9780721614007
Pages : 578 pages
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A comprehensive text which presents the essentials of internal medicine relevant to the practice of clinical podiatric medicine and surgery.

Atlas of capillaroscopy in rheumatic diseases
Author : Maurizio Cutolo
Publisher : Elsevier srl
Release Date : 2015-09-30T00:00:00+02:00
ISBN 10 : 8821433919
Pages : 208 pages
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Primary Raynaud phenomenon, as clinical symptom of altered peripheral microcirculation, affects 5ˆ15% of individuals in the general population and almost 15% of cases will shift from the primary to the secondary phenomenon (associated with the systemic sclerosis and other connective tissue diseases) in a mean time of 29.4±10 months. Nailfold videocapillaroscopy (NVC) represents the safest, noninvasive, less expensive and reliable method to analyze microvascular abnormalities in systemic sclerosis and the findings can be scored and quantified. Since microvascular damage and dysfunction represent early markers of systemic sclerosis and are clinically mirrored by secondary Raynaud phenomenon, the diagnostic, prognostic and therapeutic implications of microvessel morphological analysis by NVC enables the best clinical management. Reduced capillary density on NVC predict and correlates with a high risk of developing digital skin ulcers and the presence of pulmonary arterial hypertension, and can therefore be used as a marker of systemic sclerosis severity and progression, as well as to monitorize the therapeutical effects. Growing interest and intense recent research on capillaroscopy have resulted up to 2010 in almost 350 papers reported in PubMed in the last 10 years, accounting for almost 50% of the total number of publications on the subject from 1951. However, an atlas explaining the capillaroscopy in rheumatic diseases in a modern, updated and physiologically-based way with large discussion of clinical cases was lacking and is now available. The authors of the atlas have been selected among the best international experts of the field and are all members of the board of the international courses on capillaroscopy supported by the European Ligue Against Rheumatic Diseases (EULAR). The reader after a carefull and progressive analysis of the text will learn to understand the capillaroscopic findings that characterize the most important rheumatic diseases and will use the atlas for his daily clinical practice.

Quantitative Photoplethysmography
Author : Vladimír Blažek,Ulrich Schultz-Ehrenburg
Publisher : N.A
Release Date : 1996
ISBN 10 : 9783183192205
Pages : 70 pages
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