Relevant bibliographies by topics / Cardiac output – Measurement / Dissertations / Theses
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Dissertations / Theses on the topic 'Cardiac output – Measurement'

Author: Grafiati
Published: 4 June 2021
Last updated: 26 January 2023

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1

Nugent, Anne-Marie. "Cardiac output measurement in man." Thesis, Queen's University Belfast, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261931.

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2

Chetham, Scott Matthew. "Measurement of cardiac output by multifrequency bioimpedance." Thesis, Queensland University of Technology, 2003.

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3

Franks, Peter J. "Estimation of cardiac output by a single breath method." Thesis, Loughborough University, 1985. https://dspace.lboro.ac.uk/2134/32997.

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Many attempts have been made to quantify cardiac output using both invasive and non-invasive techniques. The results have generally been poorly reproducible and comparisons of techniques have yielded highly variable values. A single breath inert gas method was used in the study, since it offers several advantages over previous methods, chiefly its speed of measurement, and the controlled manner in which it is performed. The method observes the uptake of a semi-soluble inert gas (Freon-22) with respect to an insoluble marker, and calculates cardiac output (pulmonary flow) from the slope of the
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4

Cathelyn, Jim, and L. Lee Glenn. "Effect of Ambient Temperature and Cardiac Stability on Two Methods of Cardiac Output Measurement." Digital Commons @ East Tennessee State University, 1999. https://dc.etsu.edu/etsu-works/7534.

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The dependence of cardiac output measurement precision on ambient temperature and cardiac output stability was assessed by concurrent continuous and bolus thermodilution methods in postoperative cardiac surgery patients. The degree of agreement between the two methods was depended on room temperature (0.1 L/min for each degree below 25 degrees C). The agreement was also closer in trials where cardiac output was stable (< 10% variation). The continuous thermodilution method shows sufficient agreement with the bolus method for use in critical care; however, improved precision of cardiac output t
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5

Warner, Margaret. "Automated algorithms for detection of stroke distance from Doppler ultrasound signals." Thesis, University of Aberdeen, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327097.

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6

Schau, Geoffrey Fredrick. "Device, Method, and Algorithm to Assess Changes in Cardiac Output via Intracardiac Impedance Monitoring." PDXScholar, 2015. https://pdxscholar.library.pdx.edu/open_access_etds/2402.

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Cardiac output, the volume of blood pumped by the heart over time, is a powerful clinical metric used by physicians to assess overall cardiac health and patient well-being. However, current cardiac output estimation methods are typically invasive, time-consuming, expensive, or some combination of all three. Patients that receive artificial cardiac pacemaker devices are particularly susceptible to cardiac dysfunction and often require long-term cardiac monitoring support. This thesis proposes a novel cardiac output monitoring solution which leverages an implantable intracardiac medical device.
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7

Kapchinsky, Sophia. "Measurement of exercise cardiac output in chronic obstructive pulmonary disease: comparison of three non-invasive techniques." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=97239.

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Measurement of exercise cardiac output (Qc) in chronic obstructive pulmonary disease (COPD) is limited by the availability of accurate, reliable and practical non-invasive techniques. The purpose of this investigation was to compare three techniques, two of which are lung-diffusion-based (CO2 and Innocor® inert-gas rebreathing) and one using thoracic impedance cardiography (Physioflow®), for exercise Qc determination in 13 COPD patients (Gold II-III) and 11 age-matched controls (CTRL). Measurements were obtained during cycling at 20, 35, 50% peak power. Computation of Qc was based on arterial
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8

Cheatham, Christopher C. "Cardiovascular drift relative to ventilatory threshold in boys and men." Virtual Press, 1997. http://liblink.bsu.edu/uhtbin/catkey/1048373.

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Cardiovascular drift can occur during prolonged exercise and is characterized by a gradual decrease in stroke volume (SV) and a corresponding increase in heart rate (HR) over time, despite the maintenance of a constant level of work; cardiac output (CO) usually is unchanged. A number of factors may cause cardiovascular drift to occur, including increases in peripheral blood flow, decreases in plasma volume, increases in circulating catecholamines, and metabolic acidosis. These physiological events may be influenced by the relationship of the exercise intensity to ventilatory threshold (VT). Th
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9

Azabji, Kenfack Marcel. "Détermination du débit cardiaque par la méthode du Modelflow appliquée à une artère périphérique au repos et à l'exercice modéré = (Measurement of Cardiac Output by the Modelflow method applied on a peripheral artery at rest and at moderate exercise) /." Genève : [s.n.], 2006. http://www.unige.ch/cyberdocuments/theses2006/AzabjiKenfackM/these.pdf.

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10

Klabal, Petr. "Měření kontrakcí izolovaných srdečních buněk v reálném čase." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219637.

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Diploma thesis deals with the basic description of cardiac muscle cells, the mechanism of its contraction and events associated with contractions. There are different types of methods which can be used for measuring of contractions and for evaluation of cell length. This work describe these methods and evaluate their pros and cons. Based on available information and technical possibilities is one of the methods chosen and used for the design of block diagram system for measuring of contraction of isolated heart cells in real time. The practical part of this diploma thesis deals with the design
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11

Urquhart, Gayle. "Timing of hemodynamic pressure measurements and thermodilutional cardiac outputs on derived hemodynamic parameters." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ40155.pdf.

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12

Shi, Qinghai, Andreas Heinig, and Olfa Kanoun. "Design and evaluation of a portable device for the measurement of bio-impedance cardiography." Universitätsbibliothek Chemnitz, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-64632.

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Electrical impedance of biological matter is known as electrical bio-impedance or simply as bio-impedance. Bio-impedance devices are of great value for monitoring the pathological and physiological status of biological tissues in clinical and home environments. The technological progress in instrumentation has significantly contributed to the progress that has been observed during the last past decades in impedance spectroscopy and electrical impedance cardiograph. Although bio-impedance is not a physiological parameter, the method enables tissue characterization and functional monitoring and
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13

LIN, CHEN-HAO, and 林忱浩. "A non-invasive cardiac output measurement system." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/05432067968629214278.

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14

Kao, Hau-ping, and 高浩平. "Development of a Cardiac Output Measurement System using Thoracic Bioimpedance." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/15577265198190832073.

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碩士<br>國立臺灣大學<br>電機工程學系<br>85<br>The research project is to use the bioelectric impedance measurement technique that is applied to measure the most important physilogical parameters of the cardiac-pulmonary organs, such as heart rate (HR),respiration rate(RR) and cardiac output (CO) and develop an impedance cardiography. A pair of flat mounted button type excitation electrodes and pick-up electrodes, home-made 100KHZ(1mA)sine ware stimulated current source, AC amplifier with gain 500 as a
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15

Klein, Michael. "A Novel Iterative Method for Non-invasive Measurement of Cardiac Output." Thesis, 2013. http://hdl.handle.net/1807/42986.

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This thesis provides a first description and proof-of-concept of iterative cardiac output measurement (ICO) – a respiratory, carbon-dioxide (CO2) based method of measuring cardiac output (CO). The ICO method continuously tests and refines an estimate of the CO by attempting to maintain the end-tidal CO2 constant. To validate the new method, ICO and bolus thermodilution CO (TDCO) were simultaneously measured in a porcine model of liver transplant. Linear regression analysis revealed the equation ICO = 0.69•TDCO + 0.65 with a Pearson correlation coefficient of 0.89. Analysis by the method of Bla
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16

江嘉胤. "Portable Impedance Cardiography System for Real-Time Noninvasive Cardiac Output Measurement." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/91755909681192266046.

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碩士<br>中原大學<br>醫學工程學系<br>85<br>High risk patients or patients with myocardium infections (MI) can benefit from long-term continuous cardiac activity monitoring. The commercial available ICG systems are either too cumbersome or without the ability to perform real-time monitoring of cardiac output (CO) and stroke volume (SV). Thus, by using the fast DSP chip (TMS320C50, Texas Instruments Co.) in conjunction with low-power components, a portable ICG system is developed for real-time longterm cardiac activity monitoring. This portable system is battery powered, small size, and in-expensive.
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17

Lin, Chen-Ying, and 林辰膺. "Measurement and Analysis of Cardiac Output in Patients with Orthostatic Hypotension." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/48886903712331969801.

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碩士<br>國立臺灣大學<br>生物產業機電工程學研究所<br>96<br>With the advanced medical instrument technology, invasive stroke volume (SV) and cardiac output (CO) assessment technique was widely applied in recent year. The primary research purpose of this study is to investigate the physiological responses of the recruited samples during head-upright tilt test. The impedance cardiography technique and the Kubicek and Sramek-Bernstein equations were used to model the SV and CO of the test subjects. This work studied 12 subjects, 5 subjects among them (5 males: 24.6 ± 2.41 years) have no previous history of either
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18

Chen, Cheng-Chieh, and 陳正傑. "Comparison of Electrical Velocimetry and Thermodilution Techniques for the Measurement of Cardiac Output." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/52511357390580797248.

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碩士<br>國立中興大學<br>獸醫學系暨研究所<br>103<br>Cardiac function monitoring during the perioperative periods in patients at risk for cardiac failure is essential to guarantee organ perfusion, especially for guiding fluid and inotropic therapy. Thermodilution (TD), as a gold standard, is an invasion method for cardiac output (CO) measuring. This device, however, accompany many risks and inconvenience. Due to the invasiveness and the morbidity associated with the TD method, an abundant variety of methods had been discussed for replacement. Electrical velocimetry, noninvasive methods of bioimpedance, has alre
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19

"The estimation of cardiac power output using multiple physiological signals." Thesis, 2010. http://library.cuhk.edu.hk/record=b6075255.

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1. An explicit mathematical description of PEP in terms of DBP was proposed, which in the first time quantitatively clarified the ventricular and arterial effects on PEP timing.<br>2. A nonlinear pressure-volume relationship which reflected the natural arterial wall properties was introduced into the asymmetric T-tube arterial model, which effectively and quantitatively described the effect of pulsatile BP on arterial parameters, e.g., compliance, PTT etc.<br>3. A mathematical relationship between PAT and BP was firstly proposed as a result of the heart-arterial interaction, which simulated a
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20

Preiss, David Alan. "A new method for the non-invasive measurement of cardiac output during spontaneous ventilation." 2005. http://proquest.umi.com/pqdweb?did=1188870961&sid=3&Fmt=2&clientId=12520&RQT=309&VName=PQD.

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21

Gao, Yu-Shiang, and 高煜翔. "Design and Implementation of a Portable Impedance Cardiography Measurement System for Noninvasive Cardiac Output Monitoring." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/w69uzr.

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博士<br>國立中央大學<br>生醫科學與工程學系<br>107<br>In the existing Cardiac Output monitoring instruments and methods, in addition to the risk of infection by applying an invasive method, the continuous measurement function cannot be achieved or a professional operation is required. Most of the existing commercially available non-invasive cardiac output monitoring systems have the disadvantages of being bulky, cumbersome and expensive, and are not easily popularized in medical and academic research units due to technical and commercial secrets. Therefore, this study proposes a portable non-invasive cardia
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22

Kalckhoff, Anne [Verfasser]. "Einsatz semiinvasiver Herzzeitvolumenmessung bei Off-pump-Koronarrevaskularisation = Semiinvasive measurement of cardiac output during off-pump coronary artery bypass grafting / vorgelegt von Anne Maria Elisabeth Kalckhoff." 2009. http://d-nb.info/1009508520/34.

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23

Schmieder, Patricia K. (Patricia Kathleen). "Cardiac output and respiratory measurements in the rainbow trout and their application to the study of blood and water flow limitations on chemical flux at the gill." Thesis, 1990. http://hdl.handle.net/1957/37428.

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A method has been developed for the continuous automated monitoring of cardiac output in adult rainbow trout. Average cardiac output measured under control conditions and varied environmental conditions of hypoxia and post-hypoxia was significantly higher (P≤ 0.05) in male than female trout. The cardiac output of trout in spawning condition was significantly higher (P≤ 0.05) than that of trout not in spawning condition. Measurements of pulsatile cardiac output were made simultaneously with trout ventilation, and revealed ventilatory interactions with blood flow that varied depending on environ
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