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Properties of pulse wave velocity in human body during various excitations
Matejková, Magdaléna ; Halámek, Josef (referee) ; Vondra, Vlastimil (advisor)
The thesis is concerned with the analysis of measuring pulse wave velocity in human body with the aid of whole-body multichannel bioimpedance which was developed at ISI AS CR, v.v.i.. The evaluation of pulse wave velocity can provide us with important information about the state of vessel compliance which is one of the basic parameters informing on their physiological state. The examination of the state of vascular system is a very important part of early diagnostics because its pathological states are the main contributor to the rise of cardiovascular diseases and disease mortality. The thesis is concerned with the theoretical analysis together with the available methods of valuation of the state of vascular system that use measuring of pulse wave velocity. The main part of the thesis deals with the analysis of the whole-body multichannel bioimpedance measurement. The proposed and programmed protocol that summarizes and visualizes all obtained information is a part of this thesis. This is currently used as an output of the experimental measurement by this method. Data file for statistical processing contains the values of the pulse wave velocity of 35 healthy volunteers and subsequently the properties of pulse wave are assessed at various excitations.
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Monitoring of hemodynamics in the departement of Anesteziology and Intensive Care
ZMEŠKALOVÁ, Marie
Monitoring the haemodynamics serves for monitoring and evaluation of data from patient's cardiovascular system by using various technology. At the department of anaesthesiology and resuscitation, it is primarily a nurse who observes the monitoring of the haemodynamics, since she is present at the patient's bed for the whole time of the work shift. She operates and calibrates the invasive monitoring of the haemodynamics. I focused on this department to get the information straight from paramedical staff, about their awareness, abilities to solve the problems related to the haemodynamics and overall orientation. It is the mapping of knowledge of paramedical staff, about the monitoring of the haemodynamics at the department of anaesthesiology and resuscitation. It means to find out the difficulties of monitoring the haemodynamics at the department of anaesthesiology and resuscitation. The hypotheses: The knowledge of paramedical staff about the monitoring of the haemodynamics at the department of anaesthesiology and resuscitation is influenced by the length of professional experience. The knowledge of paramedical staff about the monitoring of the haemodynamics at the department of anaesthesiology and resuscitation is influenced by the education. The research question: What are the difficulties of monitoring the haemodynamics at the department of anaesthesiology and resuscitation? The group of respondents (105) and informants (5) consists of paramedical staff which works at the A&E. In the period between 20.4. - 15.5. 2020. The respondents were not limited neither by the age nor by the professional experience, except for the place of work. There will be used a qualitatively quantitative strategy of the research survey in the empiric part of the diploma thesis. All the research questions and hypothesis were answered by making and processing the research survey. Most of the questions were answered correctly and most of the paramedical staff have sense of their work in the area of the haemodynamics and they understand gained information, which they evaluate in favour of patients. This diploma thesis is dedicated to nurses within the examination of monitoring of the haemodynamics at the department of anaesthesiology and resuscitation. A handbook for newly arrived staff focusing on the monitoring of haemodynamics will be created based on the results of the research. This material will be suggested as a part of basic data for adaptation process.
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Fluid-structure interaction between blood and dissipating artery wall
Fara, Jakub ; Tůma, Karel (advisor) ; Bodnár, Tomáš (referee)
In this thesis we introduce a new fluid-structure interaction model in the Eulerian description. This model is developed for blood flow in viscoelastic artery. For the fluid part a non-Newtonian model Oldroyd-B is used and for the structure part Kelvin-Voigt model is employed. Kelvin-Voigt model will be reached by a limiting process of the Oldroyd-B model. Interface between these two materials is guaranteed by conservative level-set method. Numerical tests of this model is performed by finite element method. This model is used for a simulation of two problems: a two dimensional channel with viscoelastic walls and pulsating inflow and Turek-Hron FSI benchmark. 1
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Fluid-structure interaction between blood and dissipating artery wall
Fara, Jakub ; Tůma, Karel (advisor) ; Bodnár, Tomáš (referee)
In this thesis we introduce a new fluid-structure interaction model in the Eulerian description. This model is developed for blood flow in viscoelastic artery. For the fluid part a non-Newtonian model Oldroyd-B is used and for the structure part Kelvin-Voigt model is employed. Kelvin-Voigt model will be reached by a limiting process of the Oldroyd-B model. Interface between these two materials is guaranteed by conservative level-set method. Numerical tests of this model is performed by finite element method. This model is used for a simulation of two problems: a two dimensional channel with viscoelastic walls and pulsating inflow and Turek-Hron FSI benchmark. 1
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Properties of pulse wave velocity in human body during various excitations
Matejková, Magdaléna ; Halámek, Josef (referee) ; Vondra, Vlastimil (advisor)
The thesis is concerned with the analysis of measuring pulse wave velocity in human body with the aid of whole-body multichannel bioimpedance which was developed at ISI AS CR, v.v.i.. The evaluation of pulse wave velocity can provide us with important information about the state of vessel compliance which is one of the basic parameters informing on their physiological state. The examination of the state of vascular system is a very important part of early diagnostics because its pathological states are the main contributor to the rise of cardiovascular diseases and disease mortality. The thesis is concerned with the theoretical analysis together with the available methods of valuation of the state of vascular system that use measuring of pulse wave velocity. The main part of the thesis deals with the analysis of the whole-body multichannel bioimpedance measurement. The proposed and programmed protocol that summarizes and visualizes all obtained information is a part of this thesis. This is currently used as an output of the experimental measurement by this method. Data file for statistical processing contains the values of the pulse wave velocity of 35 healthy volunteers and subsequently the properties of pulse wave are assessed at various excitations.
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