Tesis sobre el tema "Blood pressure"
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Sorvoja, H. (Hannu). "Noninvasive blood pressure pulse detection and blood pressure determination". Doctoral thesis, University of Oulu, 2006. http://urn.fi/urn:isbn:9514282728.
Texto completoCitty, Sandra Wolfe. "Ambulatory blood pressure biosituational feedback and systolic blood pressure estimation". [Gainesville, Fla.]: University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0000663.
Texto completoGuilcher, Antoine. "Central blood pressure". Thesis, King's College London (University of London), 2012. https://kclpure.kcl.ac.uk/portal/en/theses/central-blood-pressure(cfe1a0fc-56e8-4338-a6aa-462c6d6de0bb).html.
Texto completoMisner, Scottie. "High Blood Pressure". College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2010. http://hdl.handle.net/10150/146443.
Texto completoSoueidan, Karen. "Augmented blood pressure measurement through the estimation of physiological blood pressure variability". Thesis, University of Ottawa (Canada), 2010. http://hdl.handle.net/10393/28828.
Texto completoAbel, Evan Dale. "Insulin and blood pressure". Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.257939.
Texto completoWang, Fa-Liang. "Blood pressure monitoring system /". Online version of thesis, 1992. http://hdl.handle.net/1850/11172.
Texto completoCarstairs, Rachael Caroline. "Human cardiovascular responses to positive pressure breathing with counter pressure". Thesis, Imperial College London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322225.
Texto completoSwoboda, Marek Lec Ryszard Joseph Jeffrey. "Implantable arterial blood pressure sensor /". Philadelphia, Pa. : Drexel University, 2004. http://hdl.handle.net/1860/2968.
Texto completoAhmed, Niaz. "Blood pressure in acute ischaemic stroke : blood pressure and stress in the acute phase of stroke and influence of initial blood pressure on stroke-outcome /". Stockholm, 2003. http://diss.kib.ki.se/2003/91-7349-700-2/.
Texto completoMueller, Jonathon. "The effect of differentiation technique utilized in continuous noninvasive blood pressure measurement". Akron, OH : University of Akron, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=akron1145295553.
Texto completo"May, 2006." Title from electronic thesis title page (viewed 01/16/2008) Advisor, Dale Mugler; Co-Advisor, Bruce Taylor; Committee member, Daniel Sheffer; Department Chair, Daniel Sheffer; Dean of the College, George K. Haritos; Dean of the Graduate School, George R. Newkome. Includes bibliographical references.
Svensson, Per. "Blood pressure, blood pressure variability and myocardial ischemia : studies in patients with peripheral arterial disease and matched control subjects /". Stockholm, 2004. http://diss.kib.ki.se/2004/91-7349-826-2.
Texto completoNg, Kim-Gau. "Oscillometric blood pressure measurement and simulation". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq20572.pdf.
Texto completoLuik, A. J. "Blood pressure control in hemodialysis patients". [Maastricht : Maastricht : Universiteit Maastricht] ; University Library, Maastricht University [Host], 1998. http://arno.unimaas.nl/show.cgi?fid=5947.
Texto completoKattach, Hassan. "Blood pressure control in aortic stenosis". Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526473.
Texto completoClark, Phillipa Margaret. "Childhood blood pressure : aspects of programming". Thesis, University of Southampton, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242550.
Texto completoZakrzewski, Aaron Michael. "Arterial blood pressure estimation using ultrasound". Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111743.
Texto completoCataloged from PDF version of thesis.
Includes bibliographical references (pages 155-163).
While blood pressure is commonly used by doctors as an indicator of patient health, the available techniques to measure the quantity suffer from many inconveniences such as cutting off blood flow, being cumbersome to use, being invasive, or being inaccurate. The research addresses many of these inconveniences by developing and evaluating a novel ultrasound-based blood pressure measurement technique that is non-invasive and non-occlusive. The technique proceeds in three steps: data acquisition, data reduction, and optimization. In the data acquisition step, an ultrasound probe is placed on a patient's artery and a force sweep is conducted such that the contact force gradually increases; both the applied force and B-Mode images are recorded. In the data-reduction step, the Star-Kalman filter is applied in order to find the size of the artery in each image frame captured. The segmentation data and contact force data are inputs into the optimization step which consists of two sequential optimizations; the first makes many modeling assumptions and gives an estimate of pulse pressure while the second makes less assumptions and uses the approximation of pulse pressure to obtain absolute values of systolic and diastolic blood pressure. Central to the optimization algorithm is a computational biomechanical model of the artery and surrounding tissue, which is numerically modeled using finite elements. The impact of major modeling assumptions is corrected with a one time calibration. The technique is validated on a number of different data sets. Major data sets discussed include data taken on the carotid artery of (1) 24 single-visit nominally healthy volunteers, (2) two multi-visit nominally healthy volunteers, (3) one multi-visit hypertensive volunteer, and (4) one multi-visit hypotensive volunteer; additional miscellaneous data sets are taken and analyzed as part of this dissertation. The algorithm performance is quantified against readings from an automatic oscillometric cuff. Results show that systolic and diastolic blood pressures can be predicted by the algorithm. The technology discussed in this dissertation represents a proof-of-concept of a blood pressure measurement technique that could occupy a clinical middle ground between the invasive catheter and cuff-based techniques.
by Aaron Michael Zakrzewski.
Ph. D.
Huang, Zijian. "Statistical methods for blood pressure prediction". HKBU Institutional Repository, 2020. https://repository.hkbu.edu.hk/etd_oa/801.
Texto completoMorrell, Stephen L. "Aircraft noise and child blood pressure". Connect to full text, 2003. http://hdl.handle.net/2123/594.
Texto completoTitle from title screen (viewed Apr. 29, 2008). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Public Health, Faculty of Medicine. Includes bibliography. Also available in print form.
Morrell, Stephen Louis. "Aircraft noise and child blood pressure". Thesis, The University of Sydney, 2003. http://hdl.handle.net/2123/594.
Texto completoMorrell, Stephen Louis. "Aircraft noise and child blood pressure". University of Sydney. Public Health, 2003. http://hdl.handle.net/2123/594.
Texto completoCorradetti, Alessandra. "Ambulatory blood pressure monitoring in pregnancy". Doctoral thesis, Università Politecnica delle Marche, 2011. http://hdl.handle.net/11566/243017.
Texto completoKumagai, Kyoko. "Central blood pressure relates more strongly to retinal arteriolar narrowing than brachial blood pressure: The Nagahama Study". Kyoto University, 2015. http://hdl.handle.net/2433/199173.
Texto completoJonnada, Srikanth. "Cuff-less Blood Pressure Measurement Using a Smart Phone". Thesis, University of North Texas, 2012. https://digital.library.unt.edu/ark:/67531/metadc115102/.
Texto completoTronvik, Erling. "Migraine, blood pressure andthe renin- angiotensin system". Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for nevromedisin, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-5398.
Texto completoMafi, Majid. "Blood Pressure Estimation Using Oscillometric Pulse Morphology". Thesis, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/20630.
Texto completoLin, Han-Chun (Vivien). "Specialised non-invasive blood pressure measurement algorithm". AUT University, 2007. http://hdl.handle.net/10292/976.
Texto completoBrown, Ian James. "Carbohydrate intake and blood pressure : INTERMAP study". Thesis, Imperial College London, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.443830.
Texto completoGeeganage, Chamila Manohari. "Management of Blood Pressure in Acute stroke". Thesis, University of Nottingham, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.523082.
Texto completoSare, Gillian Mary. "high blood pressure in acute ischaemic stroke". Thesis, University of Nottingham, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.537647.
Texto completoMa, Po-wing y 馬寶詠. "Effects of blood pressure on neurocognitive functions". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/209531.
Texto completopublished_or_final_version
Clinical Psychology
Doctoral
Doctor of Psychology
Muñoz, Aguilera Eva Mª. "Periodontitis and Blood Pressure: Exploring the Association". Doctoral thesis, Universitat Internacional de Catalunya, 2021. http://hdl.handle.net/10803/673279.
Texto completoAntecedentes: La evidencia actual sugiere una relación entre la periodontitis e hipertensión, sin embargo, la naturaleza y la magnitud de esta asociación están por determinar. Por lo tanto, esta tesis doctoral tiene el objetivo de discernir su relación. Material y métodos: Para estudiar la hipótesis de la investigación, tres metodologías fueron llevadas a cabo. La revisión sistemática de la literatura (1ª parte), cuyo objetivo primario fue investigar si pacientes con periodontitis presentaban un mayor riesgo de hipertensión en comparación con aquellos sin periodontitis. Los objetivos secundarios evaluaron i: la relación lineal de la periodontitis (extensión/severidad) con la hipertensión [medidas de presión arterial (PA)], ii: los valores medios de la PA en periodontitis versus no periodontitis, iii: el efecto del tratamiento periodontal en la PA sistólica (PAS) y diastólica (PAD). El estudio transversal (2ª parte) de dos bases de datos representativas de las poblaciones norteamericana y coreana tuvo como objetivos i: corroborar los resultados de la revisión sistemática en cuanto al riesgo de hipertensión en pacientes con periodontitis y ii: analizar la asociación con la inflamación sistémica y su posible efecto mediador. El estudio de casos y controles (3ª parte) se diseñó con el objetivo de investigar i: la asociación entre periodontitis y los valores medios de PAS/PAD, ii: la relación con los marcadores de inflamación sistémica y su posible efecto mediador, iii: ll porcentaje de hipertensión no diagnosticada en la población de estudio. Resultados: La revisión sistemática incluyó 81 estudios (observacionales y de intervención). La periodontitis moderada a severa (OR = 1.22; 95% CI: 1.10–1.35, P=0.0001) y la periodontitis severa (OR = 1.49; 95% CI: 1.09–2.05, P=0.01) se asociaron a hipertensión. Además, los estudios longitudinales de cohortes confirmaron los resultados; la periodontitis incrementó el riesgo de hipertensión (OR = 1.68; 95% CI: 0.85–3.35, P=0.14). Los valores de PAS (WMD = 4.49 mmHg; 95% CI: 2.88–6.11, P=0.00001) y PAD (WMD = 2.03 mmHg; 95% CI: 1.25–2.81, P=0.00001) se encontraron más elevados en pacientes periodontales en comparación con aquellos sin la enfermedad. Por último, solamente 5 de 12 estudios de intervención confirmaron una reducción en PAS=3-12.5 mmHg y de PAD=0-10 mmHg tras el tratamiento periodontal. Los resultados del estudio transversal mostraron que participantes con periodontitis tenían un riesgo de hipertensión aumentado (NHANES: OR = 1.3, 95% CI: 1.0–1.6, P=0.025; KNHANES: OR = 1.2, 95% CI: 1.0–1.4, P=0.041) y además, de PAS≥140 mmHg (NHANES: OR = 1.6, 95% CI: 1.1–2.3, P<0.001; KNHANES: OR = 1.3, 95% CI: 1.0–1.6, P<0.031) después de ajustar las variables de confusión. Los resultados se confirmaron en aquellas personas que no tomaban medicación antihipertensiva. La periodontitis estaba directamente asociada con el recuento de glóbulos blancos (RGB) en las dos bases de datos y con la proteína C-reactiva (PCR) en NHANES. Los análisis de mediación confirmaron que la PCR medió la relación entre periodontitis e hipertensión en las dos poblaciones. El RGB actuó como mediador en KNHANES mientras que en NHANES, el efecto de mediación dependió de la inclusión de la PCR en el modelo. Los resultados del estudio de casos y controles mostraron que los individuos con periodontitis severa (casos) presentaron una PAS [3.36 mm Hg (95% CI, 0.91–5.82, P=0.007)] y PAD [2.16 mmHg (95% CI, 0.24–4.08, P=0.027)] más elevada que los controles (individuos sin periodontitis). La periodontitis estaba asociada con la PAS [variable continua (β=3.46±1.25, P=0.005)] y un riesgo más elevado de tener PAS≥140 mmHg (OR = 2.3, 95% CI, 1.15–4.60, P=0.018), independientemente de variables cardiovasculares comunes. Se obtuvieron resultados similares cuando el modelo se realizó con variables periodontales continuas y PAS. Las medidas de inflamación sistémica (PCR y RGB) se encontraron elevadas en pacientes con periodontitis, pero no actuaron como mediadoras de la asociación entre periodontitis y los valores de PA. Conclusiones: La periodontitis está asociada con un mayor riesgo de padecer valores de PA elevada e hipertensión, así como también de marcadores de inflamación sistémica, los cuales podrían actuar como mediadores de la asociación. La integración de estrategias de salud por parte de las comunidades médica y dental con la atención centrada en el paciente son clave tanto en la prevención como en el control de la periodontitis e hipertensión con el objetivo de disminuir el riesgo cardiovascular.
Zhou, Bin. "Worldwide trends in blood pressure and diabetes". Thesis, Imperial College London, 2017. http://hdl.handle.net/10044/1/56634.
Texto completoSchroeder, Knut. "Improving adherence to blood pressure lowering medication". Thesis, University of Bristol, 2003. http://hdl.handle.net/1983/799b44ff-e10d-49c6-80a3-363521922f9c.
Texto completoTakahashi, Osamu. "Evaluation of lower limb blood pressure measurement". Kyoto University, 2006. http://hdl.handle.net/2433/143812.
Texto completoLarkins, Nicholas George. "Blood pressure and albuminuria among Australian children". Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/20227.
Texto completoLynch, Dorine A. "Basic Quality Care Blood Pressure Teaching Plan". ScholarWorks, 2019. https://scholarworks.waldenu.edu/dissertations/7821.
Texto completoJones, Martin A. "Ambulatory blood pressure monitoring in the assessment of blood pressure variations and control in patients with chronic renal failure". Thesis, University of Bristol, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336936.
Texto completoOke, Adekunle, Esther Adeniran, Christian Nwabueze y Nathan Hale. "Association between Home Blood Pressure Monitoring and Total Office Visits among Medicare Beneficiaries with self-reported High Blood Pressure". Digital Commons @ East Tennessee State University, 2021. https://dc.etsu.edu/asrf/2021/presentations/30.
Texto completoO'Flynn, Ellen Ivy. "Comparison of methods of measuring the brachial systolic pressure in determining the ankle/brachial index". Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/29735.
Texto completoApplied Science, Faculty of
Nursing, School of
Graduate
Jayasinghe, Dulip. "The effect of blood pressure on the cerebral blood flow of preterm infants". Thesis, University of Leeds, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.490972.
Texto completoRadhakrishna, Smitha. "Commercialization of contact-free blood pressure monitoring technology". Cleveland, Ohio : Case Western Reserve University, 2010. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=case1270228233.
Texto completoWikström, Martin. "Compensating for Respiratory Artifacts in Blood Pressure Waveforms". Thesis, Linköping University, Department of Electrical Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2942.
Texto completoCardiac catheterization has for a long time been a valuable way to evaluate the hemodynamics of a patient. One of the benefits is that the entire blood pressure waveform can be recorded and visualized to the cardiologist. These measurements are however disturbed by different phenomenon, such as respiration and the dynamics of the fluid filled catheter, which introduces artifacts in the blood pressure waveform. If these disturbances could be removed, the measurement would be more accurate. This report focuses on the effects of respiratory artifacts in blood pressure signals during cardiac catheterization.
Four methods, a standard bandpass filter, two adaptive filters and one wavelet based method are considered. The difference between respiratory artifacts in systolic and diastolic pressure is studied and dealt with during compensation. All investigated methods are implemented in Matlab and validated against blood pressure signals from catheterized patients.
The results are algorithms that try to correct for respiratory artifacts. The rate of success is hard to determine since only a few measured blood pressure signals have been available and since the size and appearance of the actual artifacts are unknown.
Baktash, Seddigheh. "Ratio-Independent Arterial Stiffness-Based Blood Pressure Estimation". Thesis, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30971.
Texto completoCorreia, Anabela G. 1975. "The renal medullary circulation and blood pressure control". Monash University, Dept. of Physiology, 2001. http://arrow.monash.edu.au/hdl/1959.1/8480.
Texto completoJohnson, J. V. "Vasopressin and blood pressure regulation in the rat". Thesis, University of Nottingham, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376525.
Texto completoHylton, P. Antoinette. "Blood pressure and lifestyle in UK African-Caribbeans". Thesis, City University London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363352.
Texto completoBull, Adrian Richard. "Early determinants of blood pressure and related disease". Thesis, University of Southampton, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238962.
Texto completoSun, James Xin. "Cardiac output estimation using arterial blood pressure waveforms". Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/41625.
Texto completoIncludes bibliographical references (p. 73-74).
Cardiac output (CO) is a cardinal parameter of cardiovascular state, and a fundamental determinant of global oxygen delivery. Historically, measurement of CO has been limited to critically-ill patients, using invasive indicator-dilution methods such as thermodilution via Swan-Ganz lines, which carry risks. Over the past century, the premise that CO could be estimated by analysis of the arterial blood pressure (ABP) waveform has captured the attention of many investigators. This approach of estimating CO is minimally invasive, cheap, and can be done continuously as long as ABP waveforms are available. Over a dozen different methods of estimating CO from ABP waveforms have been proposed and some are commercialized. However, the effectiveness of this approach is nebular. Performance validation studies in the past have mostly been conducted on a small set of subjects under well-controlled laboratory conditions. It is entirely possible that there will be circumstances in real world clinical practice in which CO estimation produces inaccurate results. In this thesis, our goals are to (1) build a computational system that estimates CO using 11 of the established methods; (2) evaluate and compare the performance of the CO estimation methods on a large set clinical data, using the simultaneously available thermodilution CO measurements as gold-standard; and (3) design and evaluate an algorithm that identifies and eliminates ABP waveform segments of poor quality. Out of the 11 CO estimation methods studied, there is one method (Liljestrand method) that is clearly more accurate than the rest. Across our study population of 120 subjects, the Liljestrand method has an error distribution with a 1 standard deviation error of 0.8 L/min, which is roughly twice that of thermodilution CO. These results suggest that although CO estimation methods may not generate the most precise values, they are still useful for detecting significant (>1 L/min) changes in CO.
by James Xin Sun.
M.Eng.
Barrera, Vergara Lena. "Factors affecting blood pressure control in primary care". Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/18090.
Texto completo