Bibliografie tematiche / Peripheral pulse

Letteratura scientifica selezionata sul tema "Peripheral pulse"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 5 febbraio 2022

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Articoli di riviste sul tema "Peripheral pulse"

Mikaelian, H. H. "Psychology of Computer Use: IV. Effects of Video Display Units on Fundamental Visual Processes: Temporal Resolution". Perceptual and Motor Skills 66, n. 3 (giugno 1988): 951–62. http://dx.doi.org/10.2466/pms.1988.66.3.951.

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Measures of two-pulse resolution (2PR) using foveally and peripherally viewed targets were obtained before and after reading videotext and print. Three pulse durations (25, 250, and 300 msec) were used. The results showed that (a) 2PR on the fovea is about a fourth of that on the periphery, (b) peripheral 2PR increases following reading videotext, and (c) no appreciable effects occur following reading print.

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Li, Ye, Antoine Guilcher, Samuel Vennin, Jordi Alastruey-arimon e Phil Chowienczyk. "P1 DETERMINANTS OF PERIPHERAL PULSE PRESSURE AND PULSE PRESSURE AMPLIFICATION". Artery Research 24, n. C (2018): 80. http://dx.doi.org/10.1016/j.artres.2018.10.054.

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Kuvin, J. T., M. Sidhu, A. R. Patel, K. A. Sliney, N. G. Pandian e R. H. Karas. "Pulse pressure and peripheral arterial vasoreactivity". Journal of Human Hypertension 19, n. 6 (24 febbraio 2005): 501–2. http://dx.doi.org/10.1038/sj.jhh.1001844.

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Vasan, Ramachandran S. "Pathogenesis of Elevated Peripheral Pulse Pressure". Hypertension 51, n. 1 (gennaio 2008): 33–36. http://dx.doi.org/10.1161/hypertensionaha.107.101196.

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Murray, Willie Bosseau, e Patrick Anthony Foster. "The peripheral pulse wave: Information overlooked". Journal of Clinical Monitoring 12, n. 5 (settembre 1996): 365–77. http://dx.doi.org/10.1007/bf02077634.

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Fushimi, Yasutaka, Tomohisa Okada, Akira Yamamoto, Mitsunori Kanagaki, Koji Fujimoto e Kaori Togashi. "Timing dependence of peripheral pulse-wave-triggered pulsed arterial spin labeling". NMR in Biomedicine 26, n. 11 (20 giugno 2013): 1527–33. http://dx.doi.org/10.1002/nbm.2986.

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Gottlieb, Michael D., e Mitchell L. Kietzman. "Two-Pulse Temporal Integration Functions in the Fovea and Peripheral Retina". Perceptual and Motor Skills 64, n. 2 (aprile 1987): 343–54. http://dx.doi.org/10.2466/pms.1987.64.2.343.

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The temporal integration of luminous energy was compared in the fovea and at 7° eccentricity using two-pulse stimuli and two methodologies The two-pulse stimuli consisted of two 1-msec. light pulses separated by intervals of darkness ranging from 1 to 400 msec; they were provided by a glow modulator tube transilluminating a 21.8' opal glass target. In Exp. 1 (equal-performance design), integration functions were generated using a forced-choice staircase procedure to estimate threshold luminance. The data for two Os showed that the critical duration (CD), and thus the period of complete integration, was briefer in the fovea than at 7°. Beyond the CD, integration continued to differ for the two retinal locations. In the fovea, two-pulse stimuli beyond CD evidenced partial integration and at the longest stimulus durations no integration or inhibition. In contrast, at 7° stimuli beyond CD appeared to evidence probability summation. In Exp. 2 (equal-energy design), integration functions were generated by measuring the detectability of two-pulse stimuli of different durations but equal in total luminous energy. A signal-detection procedure yielded measures of both response frequency and signal detectability, P(A). The data for two Os showed that for both measures CD was briefer in the fovea than at 7°. Also, in the fovea, long two-pulse stimuli appeared to show no integration or inhibition. Both experiments then showed a foveal-peripheral difference in two-pulse measures of visual temporal integration, with the fovea evidencing less integration. In addition, the forced-choice and signal-detection procedures showed that these loci differences in integration were independent of the Os' response criterion.

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Johnson, Kelly C., Zilong Xie, Maureen J. Shader, Paul G. Mayo e Matthew J. Goupell. "Effect of Chronological Age on Pulse Rate Discrimination in Adult Cochlear-Implant Users". Trends in Hearing 25 (gennaio 2021): 233121652110073. http://dx.doi.org/10.1177/23312165211007367.

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Cochlear-implant (CI) users rely heavily on temporal envelope cues to understand speech. Temporal processing abilities may decline with advancing age in adult CI users. This study investigated the effect of age on the ability to discriminate changes in pulse rate. Twenty CI users aged 23 to 80 years participated in a rate discrimination task. They attempted to discriminate a 35% rate increase from baseline rates of 100, 200, 300, 400, or 500 pulses per second. The stimuli were electrical pulse trains delivered to a single electrode via direct stimulation to an apical (Electrode 20), a middle (Electrode 12), or a basal location (Electrode 4). Electrically evoked compound action potential amplitude growth functions were recorded at each of those electrodes as an estimate of peripheral neural survival. Results showed that temporal pulse rate discrimination performance declined with advancing age at higher stimulation rates (e.g., 500 pulses per second) when compared with lower rates. The age-related changes in temporal pulse rate discrimination at higher stimulation rates persisted after statistical analysis to account for the estimated peripheral contributions from electrically evoked compound action potential amplitude growth functions. These results indicate the potential contributions of central factors to the limitations in temporal pulse rate discrimination ability associated with aging in CI users.

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Korhonen, P., H. Kautiainen e P. Aarnio. "Pulse pressure and subclinical peripheral artery disease". Journal of Human Hypertension 28, n. 4 (17 ottobre 2013): 242–45. http://dx.doi.org/10.1038/jhh.2013.99.

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Safar, Michel E. "Peripheral Pulse Pressure, Large Arteries, and Microvessels". Hypertension 44, n. 2 (agosto 2004): 121–22. http://dx.doi.org/10.1161/01.hyp.0000135448.73199.75.

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Più fonti

Tesi sul tema "Peripheral pulse"

Camacho, Fernando Graduate School of Biomedical Engineering Faculty of Engineering UNSW. "Statistical analysis of central aortic blood pressure parameters derived from the peripheral pulse". Awarded by:University of New South Wales. Graduate School of Biomedical Engineering, 2006. http://handle.unsw.edu.au/1959.4/26215.

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With the rise in prevalence of cardiovascular (CV) disease, risk stratification is becoming increasingly important. Accurate characterization of the CV system is required, for which central aortic blood pressure (BP) parameters form an integral part. However, invasive measurement of central aortic BP parameters (aP) is difficult. Therefore, non-invasive methods to estimate aP from the radial pressure pulse (rPulse) have been proposed. To analyze accuracy of estimated aP (aPhat) and applicability in risk stratification and diagnosis, this study presents: (1) a novel representation of the rPulse with minimal loss of information, (2) a framework for strict definition and statistical analysis of aPhat, and (3) a dynamic analysis of effects of mean BP (MP) and heart rate (HR) in the rPulse shape. Methods: (1) 2671 rPulse s measured by applanation tonometry were represented using the first eight principal components (PC) scores after standard PC transformation. rPulse shapes were compared in three subpopulations. (2) The concept of "estimation option" (EO) for aP estimation was presented. A framework for strict definition of aPhat and the comparison of EOs was proposed, and 7 different EOs compared. (3) A sequence of rPulse s was analyzed during soft exhalation maneuver (SEM) %, a mild Valsalva type maneuver, in eight healthy subjects. Radial BP and respiration pressure were continuously measured. The effects of MP and HR in the rPulse parameters were analyzed by standard linear regression for each subject. Results: (1) PC representation of the rPulse improves accuracy of the estimation of aPhat compared with the simple use of rPulse parameters. Subpopulations have distinctive rPulse shapes. (2) No single EO was better for the estimation of all aPhat. Inclusion of MP improves estimation accuracy. Despite further improvement when rPulse is included, the general transfer function EO is a biased estimator. (3) The dynamic analysis of the rPulse provides information of the effects of MP and HR in the rPulse not available in static analysis. The effects were specific for each individual and different from the results obtained from a general population. Conclusions: For accurate CV risk stratification, future studies should include a dynamic measurement of calibrated radial pressure pulse during SEM maneuver. Risk analysis and diagnosis should be based on representations of the rPulse with minimum loss of information. aPhat should be used for better understanding of the underlying physiological principles.

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Epstein, Sally Laura Tessier Banfill. "Assessment of cardiovascular biomarkers derived from peripheral pulse waveforms using computational blood flow modelling". Thesis, King's College London (University of London), 2017. https://kclpure.kcl.ac.uk/portal/en/theses/assessment-of-cardiovascular-biomarkers-derived-from-peripheral-pulse-waveforms-using-computational-blood-flow-modelling(ae3444f1-1504-4bae-bdd9-b3e6a5c7324f).html.

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The aim of this thesis is to investigate the ability of cardiovascular biomarkers calculated from peripheral pulse waveforms to estimate central properties of the cardiovascular system (e.g. aortic stiffness) using nonlinear one-dimensional (1-D) modelling of pulse wave propagation in the arterial network. To test these biomarkers, I have produced novel 1-D models of pulse wave propagation under normal and pathological conditions. In the first part of my thesis, I extended the modelling capabilities of the existing 1-D/0-D code to represent arterial blood ow under diabetes, hypertension, and combined diabetes and hypertension. Cardiac and vascular parameters of the 1-D model were tailored to best match data available in the literature to produce generalised hypertensive, diabetic, and combined diabetic and hypertensive population models. Using these models, I have shown that the pulse waveform at the finger is strongly affected by the aortic flow wave and the muscular artery stiffiness and diameter. Furthermore the peak to peak time measured from the pulse waveform at the finger can identify hypertensive from diabetic patients. In the second part, I developed a new methodology for optimising the number of arterial segments in 1-D modelling required to simulate precisely the blood pressure and flow waveforms at an arbitrary arterial location. This is achieved by systematically lumping peripheral 1-D model branches into 0-D models that preserve the net resistance and total compliance of the original model. The methodology is important to simplify the computational domain while maintaining the precision of the numerical predictions { an important step to translate 1-D modelling to the clinic. This thesis provides novel computational tools of blood flow modelling and waveform analysis for the design, development and testing of pulse wave biomarkers. These tools may help bridge the gap between clinical and computational approaches.

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Insall, R. L. "Pulse waveforms and transit time from photoelectric plethysmography in the diagnosis of peripheral vascular disease". Thesis, University of Newcastle Upon Tyne, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309069.

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Rachamadugu, Arun. "Digital implementation of high speed pulse shaping filters and address based serial peripheral interface design". Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26603.

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Thesis (M. S.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2009.
Committee Chair: Laskar, Joy; Committee Member: Anderson, David; Committee Member: Cressler, John. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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McCombie, Devin Barnett 1972. "Development of a wearable blood pressure monitor using adaptive calibration of peripheral pulse transit time measurements". Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45335.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2008.
Includes bibliographical references (p. 157-159).
The ability to continuously monitor a patient's blood pressure long-term (for hours, days, or weeks) using a wearable device as unobtrusive as a wristwatch or piece of jewelry, could revolutionize the study, diagnosis, and treatment of hypertension, heart failure, and other cardiovascular disorders. Today's familiar blood pressure cuffs are used to diagnose and manage the hypertensive disorders which afflict 65 million Americans. But these existing devices only permit single 'snap-shot' measurements, while true arterial blood pressure fluctuates minute-by-minute, from night-to-day, etc. There is ample evidence that more intense blood pressure monitoring offers better clinical information. Moreover, the existing blood pressure devices are a chore: they are obtrusive, finicky, and uncomfortable. This thesis presents the design and development of a novel non-invasive BP monitor. The device provides beat-by-beat mean arterial blood pressure (MAP) estimates using adaptive calibration of the measured transit time of a propagating arterial pressure wave. The device employs unique wearable sensor architecture to estimate peripheral pulse transit time measurements. This architecture is comprised of two in-line photoplethysmograph sensors one in the form of a wristwatch measuring the volumetric pulsation in the ulnar artery and one in the form of a ring measuring the volumetric pulsation of the digital artery at the base of the little finger. Use of this architecture eliminates problems associated with the traditional method of estimating pulse transit time using the electrocardiogram (EKG).
(cont.) Additionally, by co-locating the two sensors on the same appendage not only are we able to account for the effect of hydrostatic pressure variation in our pulse transit time (PTT) measurements using an imbedded height sensor, but by actively altering the height of the two sensors relative to the heart we can achieve real-time identification of the calibration equation mapping PTT to MAP. Such real-time calibration of PTT measurements obviates the need for obtrusive cuff-based blood pressure monitors and offers the potential to recursively update the calibration equation as the patient's cardiovascular state evolves throughout the duration of the measurement period. Adaptive PTT calibration through natural patient motion has never previously been explored and offers the potential to achieve the longstanding goal of a truly imperceptible, wearable home BP monitor. This thesis describes the design and development of the sensor hardware used in the wearable device. Based on both theoretical study and experimental observations a device model has been developed to allow estimation of mean arterial blood pressure using the pulse transit times measured with our sensors. Additionally, this thesis presents the adaptive calibration methodology and the novel system identification algorithms that were used to parameterize our device model using natural human motion. Finally, this thesis demonstrates the potential of these innovative concepts through human subject testing and data analysis.
by Devin Barnett McCombie.
Ph.D.

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Dženkevičiūtė, Vilma. "Peculiarities of structural and functional changes of central and peripheral arteries in metabolic syndrome". Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20111003_114713-40821.

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Širdies ir kraujagyslių ligos (ŠKL) yra pagrindinė mirties priežastis visoje Europoje ir Lietuvoje. Literatūroje plačiai, tačiau nevienareikšmiai aptarta MS svarba širdies kraujagyslių ligų atsiradimui. Neatsakyta į vieną iš pagrindinių klausimų: kurie MS sudarantys rizikos veiksniai ar jų grupės daugiausia lemia širdies ir kraujagyslių ligų progresavimą. Mes savo darbe įvertinome arterijų funkcinių ir struktūrinių pokyčių bei kairiojo skilvelio miokardo masės indekso kitimų sąsajas su amžiumi, lytimi ir MS; taip pat atsižvelgėme ne tik į MS, bet ir į atskirų širdies bei kraujagyslių rizikos veiksnių nepriklausomą įtaką kardiovaskuliniam pažeidimui. Be to, bandėme nustatyti, koks MS sudarančių atskirų komponentų skaičius gali daugiausia lemti širdies ir kraujagyslių arterijų funkcinius ir struktūriniais kitimus bei kairiojo skilvelio miokardo masės didėjimą. Darbe nustatyta, kad sergantiesiems metaboliniu sindromu nepriklausomai nuo lyties ir amžiaus yra didesnis intimos medijos storis, šlaunies miego arterijų pulsinės bangos greitis ir kairiojo skilvelio miokardo masės indeksas. Didesnis miego arterijoje aterosklerozinių plokštelių skaičius rastas tik moterims su metaboliniu sindromu. Širdies ir kraujagyslių pažeidimų rizika sergantiems metaboliniu sindromu vyrams ir moterims taip pat buvo skirtinga. Vyrams su MS aptikta 2,14 karto didesnė kairiojo skilvelio hipertrofijos ir 4,9 karto – intimos medijos sustorėjimo tikimybė. Moterims metabolinis sindromas nesukelė intimos... [to full text]
Cardiovascular diseases (CVD) are the main cause of death all over the Europe and were the most prevalent disease in Lithuania in 2010. Based on some of the data, MS risk factors have different influence on changes of artery structure and function. MS and its components can influence differently the emergence of cardiovascular diseases and advance of complications in men and women. Furthermore, we tried to estimate the number of separate components constituting MS that can have the most significant influence on functional and structural changes in cardiovascular arteries and increase of the left ventricle myocardial mass index. The particularity of changes in different arterial stiffness indicators in patients with MS has not been determined yet in the literature, as well as prognostic value of MS when initiating early disorders in arterial structure and function and left ventricular hypertrophy. The research showed the following results: in subjects with metabolic syndrome irrespectively their gender and age higher intima-media thickness, femoral-carotid arteries pulse wave velocity and left ventricular myocardial mass index were found. However, higher number of atherosclerotic plaques in carotid artery was found only in females. Risk of cardiovascular disorders in males and females with metabolic syndrome is different. Nor in males, neither in females metabolic syndrome had no direct influence on pulse wave velocity, intima-media thickness, hypertrophy of left ventricle... [toliau žr. visą tekstą]

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Kobayashi, Katsuya. "Different Mode of Afferents Determines the Frequency Range of High Frequency Activities in the Human Brain: Direct Electrocorticographic Comparison between Peripheral Nerve and Direct Cortical Stimulation". Kyoto University, 2015. http://hdl.handle.net/2433/202676.

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Li, Lulu [Verfasser]. "Measuring fluid shear stress with a novel Doppler-derived relative pulse slope index and maximal systolic acceleration approach to detect peripheral arterial disease and to modulate arteriogenesis / Lulu Li". Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2017. http://d-nb.info/113307426X/34.

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Mercadal, Cavaller Borja. "Electroporation and peripheral nerve stimulation". Doctoral thesis, Universitat Pompeu Fabra, 2019. http://hdl.handle.net/10803/667854.

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This thesis aimed at addressing questions within the fields of electroporation and peripheral nerve stimulation and, in particular, those that arise from the interaction between the two phenomenona. On the one hand, electroporation can have various direct and indirect effects in the neuronal functions. This thesis investigates the possible role of electroporation in pulsed radiofrequency treatments for chronic pain. On the other hand, during electroporation based treatments, electrical stimulation of peripheral nerves appears as an unwanted effect causing muscle contractions and acute pain. This thesis analyzes the rationale behind the use of bipolar pulses to mitigate this effect and the implications of such approach in irreversible electroporation treatments. In addition, this thesis provides a theoretical framework to explain a series of results that were in apparent contradiction with the common knowledge of the electroporation phenomenon. Finally, this thesis presents a neuromuscular model to study the recruitment patterns in intramuscular electrical stimulation.
Aquesta tesi té com a objectiu resoldre qüestions en els camps de l’electroporació i l’estimulació dels nervis perifèrics, i sobretot, aquelles que es deriven de l’interacció entre els dos fenòmens. L’electroporació pot tenir diversos efectes directes o indirectes en les funcions neuronals. En aquesta tesi s’investiga el possible paper de l’electroporació en els tractaments de radiofreqüència polsada. D’altra banda, durant els tractaments basats en l’electroporació, l’estimulació elèctrica dels nervis perifèrics apareix com a efecte secundari causant contraccions musculars i dolor. En aquesta tesi s’analitza com l’ús de polsos bipolar pot mitigar aquests efectes i quines implicacions té aquesta estratègia en els tractaments d’electroporació irreversible. En aquesta tesi també es presenta un marc teòric per explicar una sèrie de resultats que entren en aparent contradicció amb els nostres coneixements sobre l’electroporació. Finalment, es presenta un model neuromuscular que permet estudiar la resposta d’un múscul quan és estimulat mitjançant elèctrodes intramusculars.

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Christoph, Marian, Jörg Herold, Anna Berg-Holldack, Thomas Rauwolf, Tjalf Ziemssen, Alexander Schmeisser, Sönke Weinert et al. "Effects of the Peroxisome Proliferator-Activated Receptor-γ Agonist Pioglitazone on Peripheral Vessel Function and Clinical Parameters in Nondiabetic Patients: A Double-Center, Randomized Controlled Pilot Trial". Karger, 2015. https://tud.qucosa.de/id/qucosa%3A70586.

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Objective: Despite the advanced therapy with statins, antithrombotics, and antihypertensive agents, the medical treatment of atherosclerotic disease is less than optimal. Therefore, additional therapeutic antiatherosclerotic options are desirable. This pilot study was performed to assess the potential antiatherogenic effect of the peroxisome proliferator-activated receptor-γ agonist pioglitazone in nondiabetic patients. Methods: A total of 54 nondiabetic patients were observed in a prospective, double-blind, placebo-controlled study. Patients were randomized to pioglitazone or placebo. The following efficacy parameters were determined by serial analyses: artery pulse wave analysis and carotid-femoral pulse wave velocity (PWV), static and dynamic retinal vessel function, and the common carotid intima-media thickness (IMT). The main secondary endpoint was the change in different biochemical markers. Results: After 9 months, no relevant differences could be determined in the two treatment groups in PWV (pioglitazone 14.3 ± 4.4 m/s vs. placebo 14.2 ± 4.2 m/s), retinal arterial diameter (pioglitazone 112.1 ± 23.3 μm vs. placebo 117.9 ± 21.5 μm) or IMT (pioglitazone 0.85 ± 0.30 mm vs. placebo 0.79 ± 0.15 mm). Additionally, there were no differences in the change in biochemical markers like cholesteryl ester transfer protein, lowdensity lipoprotein cholesterol, high-sensitivity C-reactive protein or white blood cell count. Conclusions : Treatment with a peroxisome proliferator-activated receptor-γ agonist in nondiabetic patients did not improve the function of large and small peripheral vessels (PPP Trial, clinicaltrialsregister. eu: 2006-000186-11).

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Più fonti

Libri sul tema "Peripheral pulse"

Fadaie-Tehrani, Alireza. Pulsed voltage in peripheral electrochemical grinding and a study of some process parameters. Manchester: UMIST, 1997.

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Maccabee, Paul J., e Vahe E. Amassian. Lessons learned from magnetic stimulation of physical models and peripheral nerve in vitro. A cura di Charles M. Epstein, Eric M. Wassermann e Ulf Ziemann. Oxford University Press, 2012. http://dx.doi.org/10.1093/oxfordhb/9780198568926.013.0006.

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This article provides a conceptual framework, which contributes to the understanding of the mechanisms involved in brain stimulation. The relationship between the induced topographic electric field and specific sites and regions of nerve activation in the brain are still not precisely known. Nevertheless, there is much more specific information available concerning peripheral nerve and nerve root stimulation. In vitro studies provide insight into the different properties of monophasic versus polyphasic pulses. Studies of brain stimulation agree with the in vitro conclusion that the polyphasic pulse is more powerful than the monophasic pulse. The shape of the induced pulse may be a relevant clinical response factor in repetitive TMS.

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Practicalities of using TENS for specific conditions and situations. Oxford University Press, 2014. http://dx.doi.org/10.1093/med/9780199673278.003.0007.

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Research studies have failed to evaluate different TENS techniques for specific conditions. Safe and appropriate TENS technique is based on the use of conventional TENS delivered at a strong, non-painful intensity at the site of pain in the first instance with patients selecting pulse pattern, frequency, and duration for reasons of comfort. In practice, it is necessary to adapt this approach for specific painful conditions. The purpose of this chapter is to demonstrate how the general principles of good practice are applied when using TENS to manage various painful conditions. The chapter discusses acute pain, including post-operative pain and labour pain, chronic musculoskeletal pain, including back pain and osteoarthritis, chronic neuropathic pain, including peripheral and central neuropathic pain, cancer pain, and TENS for children and the elderly.

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Kahn, S. Lowell. Directional AngioJet Thrombectomy with Guide Catheter Helical Spin Technique. A cura di S. Lowell Kahn, Bulent Arslan e Abdulrahman Masrani. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199986071.003.0037.

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The presence of thrombus in the central veins is associated with a higher risk of development post-thrombotic syndrome. The AngioJet Solent Proxi (90 cm) and Omni (120 cm) catheters are commonly used peripheral thrombectomy devices indicated for acute arterial and venous thrombus removal. Both catheters are 6 Fr sheath/8 Fr guide catheter compatible, and both offer the Power Pulse feature, allowing the direct infusion of tissue plasminogen activator into the thrombus. The catheters are indicated for use in vessels greater than 3 mm, with an optimal vessel range between 6 and 20 mm. Their use in the removal of iliac vein and inferior vena cava thrombus is frequent. Although the system is purported to provide effective thrombectomy capabilities in larger vessels, incomplete thrombus removal is common with larger vessels. This chapter proposes a simple modification in the standard use of the AngioJet Solent Proxi and Omni catheters.

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Lefaucheur, Jean-Pascal. TMS and pain. A cura di Charles M. Epstein, Eric M. Wassermann e Ulf Ziemann. Oxford University Press, 2012. http://dx.doi.org/10.1093/oxfordhb/9780198568926.013.0046.

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Few clinical investigations show that repeated transcranial magnetic stimulation (rTMS) to the brain could produce analgesia. Apart from the relationship between TMS and pain with respect to the clinical observation of rTMS-induced analgesic effects, this article also reviews the effects of pain on motor cortex excitability assessed by single or paired-pulse TMS and the results obtained by applying peripheral magnetic stimulation to treat musculoskeletal pain. This article discusses the effects of acute phasic provoked pain, and prolonged tonic provoked pain on motor cortex excitability. The analgesic effects resulting from a single session of rTMS are too short-lived and thereby incompatible with a durable control of chronic pain. Repeated sessions of rTMS on consecutive days produce cumulative effects. However, repeated daily rTMS sessions can be applied to control pain syndromes for a limited period. Further work is needed to define the ultimate clinical role of TMS in the management of pain.

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Rubin, Devon I., e Jasper R. Daube. Clinical Neurophysiology. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780190259631.001.0001.

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Clinical neurophysiologic testing is an important component of evaluating patients with complaints that may be attributed to diseases of the central or peripheral nervous system. This classic volume in the Contemporary Neurology Series covers the basic concepts underlying each of the testing techniques and provides comprehensive descriptions of the methods and wide range of electrophysiologic testing available for patients with epilepsy, neuromuscular diseases, movement disorders, demyelinating diseases, sleep disorders, autonomic disorders and those undergoing orthopedic and neurosurgical procedures. This text details the role of each study, the interpretation of findings, and their application clinical problems. This text describes the multiple diagnostic procedures for diverse diseases of the neuromuscular system, including: electroencephalography (EEG); electromyography and nerve conduction studies; single fiber EMG; polysomnography; surface EMG patterns, blood pressure, pulse, sweat measures; vestibular function testing; deep brain stimulator physiology; and intraoperative monitoring. It is a practical textbook for neurologists, physiatrists and clinical neurophysiologists in clinical or research practice or in training. Key features of the new edition include fully updated chapters to reflect new research and techniques in clinical neurophysiology; updated images illustrating key elements of techniques and basic concepts; case examples for practical application.

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Merry, Alan F., Simon J. Mitchell e Jonathan G. Hardman. Hazards in anaesthetic practice: body systems and occupational hazards. A cura di Jonathan G. Hardman. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780199642045.003.0045.

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“Can’t intubate, can’t oxygenate” crises and aspiration of gastric contents are important hazards in anaesthesia, and may result in the death of relatively young and healthy patients. Airway difficulties may manifest at the end of anaesthesia as well as at induction and are commoner in emergency departments and intensive care settings than during anaesthesia in operating rooms. Elements of poor management characterize the majority of airway complications. Emergency cricothyroidotomy performed by anaesthetists is associated with a high rate of failure. Other important hazards associated with anaesthesia may involve excessive or inadequate levels of oxygen or carbon dioxide in the blood, hypertension or hypotension, hypothermia or hyperthermia (including malignant hyperpyrexia), hypovolaemia, embolism of gas or thrombus, awareness, infection, and injury to the peripheral or central nervous system, or the eyes. Stroke and postoperative cognitive dysfunction may be particularly devastating for patients. These hazards are typically increased in low- and middle-income countries. The World Federation of Societies of Anaesthesiologists and the World Health Organization have endorsed international standards for a safe practice of anaesthesia, which are structured to reflect different levels of resource. The Lifebox Foundation seeks to improve the safety of surgery and anaesthesia in resource-constrained areas, notably by closing the substantial global gap in pulse oximetry. Several hazards are integral to the occupation of anaesthesia, including certain infections, increased rates of suicide, and medico-legal risks. In the end, the best way to mitigate these risks is through focusing on the safety of our patients.

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Introduction. Oxford University Press, 2014. http://dx.doi.org/10.1093/med/9780199673278.003.0001.

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Using electricity to relieve pain is an age-old technique that pre-dates the discovery of electricity. The ancient Egyptians used electric fish to treat various ailments. Transcutaneous electrical nerve stimulation (TENS) is a technique that delivers pulsed electrical currents across the intact surface of the skin to stimulate peripheral nerves using a ‘standard TENS device’ and conductive electrodes. TENS is principally used as a stand-alone treatment or as an adjunct to core treatment for symptomatic relief of most types of pain. TENS is popular with patients and practitioners because it is non-invasive, easy to administer, and has few side-effects or drug interactions. The purpose of this chapter is to overview what TENS is, why it is used, its history, and terminology used in the TENS literature

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Capitoli di libri sul tema "Peripheral pulse"

Rossi, Mattia, Nicola Toscani, Marco Mauri e Francesco Castelli Dezza. "Pulse Width Modulator Peripheral". In Introduction to Microcontroller Programming for Power Electronics Control Applications, 167–210. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003196938-13.

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Raines, Jeffrey K., e Jose I. Almeida. "Pulse Volume Recording in the Diagnosis of Peripheral Vascular Disease". In Noninvasive Peripheral Arterial Diagnosis, 39–46. London: Springer London, 2010. http://dx.doi.org/10.1007/978-1-84882-955-8_4.

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Sommermeyer, D., M. Schwaibold, B. Schöller, L. Grote, J. Hedner e A. Bolz. "Prediction of cardiovascular risk from peripheral pulse wave". In IFMBE Proceedings, 891–92. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03885-3_247.

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Raines, Jeffrey K., e Jose I. Almeida. "Pulse Volume Recording in the Diagnosis of Peripheral Vascular Disease". In Noninvasive Vascular Diagnosis, 303–10. London: Springer London, 2012. http://dx.doi.org/10.1007/978-1-4471-4005-4_22.

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Raines, Jeffrey. "Pulse Volume Recording in the Diagnosis of Peripheral Vascular Disease". In Noninvasive Vascular Diagnosis, 231–39. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-3837-2_16.

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Raines, Jeffrey K., e Jose I. Almeida. "Pulse Volume Recording in the Diagnosis of Peripheral Vascular Disease". In Noninvasive Vascular Diagnosis, 337–48. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-54760-2_23.

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Sorber, Rebecca, Jose I. Almeida, Jeffrey K. Raines e Christopher J. Abularrage. "Pulse Volume Recording in the Diagnosis of Peripheral Vascular Disease". In Noninvasive Vascular Diagnosis, 1–13. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-49616-6_23-1.

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Ehrens, D., R. Martínez-Memije e O. Infante. "Valuation of the Peripheral Blood Pulse Control through Heart Rate Variability". In VI Latin American Congress on Biomedical Engineering CLAIB 2014, Paraná, Argentina 29, 30 & 31 October 2014, 639–42. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-13117-7_163.

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Srinivas, K., L. Ram Gopal Reddy e R. Srinivas. "Estimation of heart rate variability from peripheral pulse wave using PPG sensor". In 3rd Kuala Lumpur International Conference on Biomedical Engineering 2006, 325–28. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-68017-8_83.

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Burch, G. E. "A Method for Recording and a Study of the Venous Occlusive Technique for Measuring the Time Course of the Rate of Inflow and the Time Course of the Rate of Outflow in the Finger Tip of Man During a Single Pulse Cycle". In Ciba Foundation Symposium - Peripheral Circulation in Man, 23–44. Chichester, UK: John Wiley & Sons, Ltd, 2008. http://dx.doi.org/10.1002/9780470715185.ch3.

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Atti di convegni sul tema "Peripheral pulse"

Li, Yibin, Xiaomeng Chen, Yang Zhang e Ning Deng. "Noninvasive continuous blood pressure estimation with peripheral pulse transit time". In 2016 IEEE Biomedical Circuits and Systems Conference (BioCAS). IEEE, 2016. http://dx.doi.org/10.1109/biocas.2016.7833726.

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Thompson, Lisa, Herbert Jelinek e David Cornforth. "Establishing normative data for peripheral arterial disease using pulse wave analysis". In 2008 International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP). IEEE, 2008. http://dx.doi.org/10.1109/issnip.2008.4762013.

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Phillips, Caleb, Daniyal Liaqat, Moshe Gabel e Eyal de Lara. "WristO2: Reliable Peripheral Oxygen Saturation Readings from Wrist-Worn Pulse Oximeters". In 2021 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events (PerCom Workshops). IEEE, 2021. http://dx.doi.org/10.1109/percomworkshops51409.2021.9430986.

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Haga, Katsuhiro, Masanori Kaminaga, Hidetaka Kinoshita, Hiroyuki Kogawa, Hiroshi Satoh, Shuichi Ishikura, Yoshikatsu Torii e Ryutaro Hino. "Mercury Target and Its Peripheral Devices for 1 MW Spallation Neutron Source". In 12th International Conference on Nuclear Engineering. ASMEDC, 2004. http://dx.doi.org/10.1115/icone12-49518.

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The Japan Atomic Energy Research Institute (JAERI) and the High Energy Accelerator Research Organization (KEK) are promoting a plan to construct a 1MW neutron source facility at the Tokai Research Establishment, JAERI, under the Japan Proton Accelerator Research Complex (J-PARC) Project. In the facility, 1 MW pulsed proton beam from a high-intensity proton accelerator will be injected into a mercury target in order to produce high-intensity pulse neutrons for use in the fields of life and material sciences. In order to realize such a high-power neutron source, the design activity of a cross flow type (CFT) mercury target and its peripheral devices has continued and the results is reflected in the ordering specifications of the facility construction. The arrangement of each component and their structure was optimized through experimental and analytical studies. In this paper, the present design of the mercury target components for 1MW spallation neutron source including the target vessel, a mercury circulation system, and a target trolley will be reported.

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Ji-Jer Huang, Yang-Min Huang e Ming-Wen Chang. "Using bioimpedance plethysmography for measuring the pulse wave velocity of peripheral vascular". In 2016 13th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON). IEEE, 2016. http://dx.doi.org/10.1109/ecticon.2016.7561449.

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Wang, Sheng-Hung, Wei-Kung Wang, Tse-Lin Hsu, Ming-Yie Jan e Yuh-Ying Lin Wang. "Effects of Captopril on Specific Harmonic Indexes of the Peripheral Pressure Pulse Waveform". In 2010 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2010. http://dx.doi.org/10.1109/icbbe.2010.5515815.

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Foo, J. Y. A., S. J. Wilson, G. R. Williams, M. Harris e D. M. Cooper. "Use of Regression Equation of Peripheral Pulse Timing Characteristics to Predict Hypertension in Children". In 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference. IEEE, 2005. http://dx.doi.org/10.1109/iembs.2005.1615370.

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Andruschenko, S., U. Timm, S. Koball, M. Hinz, J. Kraitl, E. Lewis e H. Ewald. "Optical sensor system for peripheral vascular diagnostics of the patients based on pulse spectroscopy method". In 2011 IEEE Sensors. IEEE, 2011. http://dx.doi.org/10.1109/icsens.2011.6127154.

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Miyashita, Hiroshi, e Shin-ichiro Katsuda. "Basis of monitoring central blood pressure and hemodynamic parameters by peripheral arterial pulse waveform analyses". In 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2013. http://dx.doi.org/10.1109/embc.2013.6609477.

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Budidha, K., e P. A. Kyriacou. "Investigation of Pulse Transit Times utilizing multisite reflectance photoplethysmography under conditions of artificially induced peripheral vasoconstriction". In 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2014. http://dx.doi.org/10.1109/embc.2014.6943998.

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Rapporti di organizzazioni sul tema "Peripheral pulse"

Wu, Shu-Mei, Yio-What Shau, Bor-Shyh Lin e Fok-Ching Chong. Effects of Mechanical Pumping on the Arterial Pulse Wave Velocity: Peripheral Artery and Micro-Vessels. Fort Belvoir, VA: Defense Technical Information Center, ottobre 2001. http://dx.doi.org/10.21236/ada412404.

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