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Evaluation of heart arrhythmias
Šromová, Michaela ; Kozumplík, Jiří (referee) ; Provazník, Ivo (advisor)
The thesis is a brief description of the anatomy and electrophysiology of the heart. The thesis also describes the different types of electrocardiogram and cardiac arrhythmias with a description of their treatment. The next section provides design of a programme for the classification of selected types of arrhythmias, and three options for rhythm detection, using the length of RR intervals, finding extremes of P and R waves, measuring the length of intervals and heights of amplitudes. The practical part of this work was to create a rhythm classifier assigning appropriate treatment of arrhythmias, verification of its functions on the signals available from the library of arrhythmias and its evaluation.
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Needs for Electrocardiogram Evaluation by a Paramedic
PROKOP, Jakub
This bachelor's thesis deals with the issue of the needs of a paramedic in the evaluation of an electrocardiogram. In the theoretical part, the evaluation of the electrocardiogram was described, starting with the basic anatomy and physiology of the vascular supply of the heart and the conduction system of the heart. Furthermore, a description of the electrocardiograph was given, and at the end, arrhythmias with ischemic changes were evaluated. The aim was to map the abilities of paramedics in evaluating the electrocardiogram and their need for education with possible suggestions for changes in education before and after starting work. Quantitative research was used in the empirical part. Data collection was carried out using a self-structured questionnaire, in which 24 items were listed. The questions were of both open-ended and closed-ended type, with responses rated using a modified Likert scale. The questionnaire was fully anonymous and intended for paramedics from the entire Czech Republic. The basic descriptive characteristics of the research group were processed. Quantitative data were expressed by mean and standard deviation and optionally supplemented with histograms according to predefined limits. For qualitative data, frequency characteristics (absolute and relative frequencies) were processed. The results of our research investigation point to the unpreparedness of paramedics in the evaluation of pathological changes on the ECG. Respondents were also found to have a need for further training in ECG assessment and would welcome periodic training on the latest in cardiology, assessment practice at their field bases, or specialist hospital internships. To improve undergraduate education, they would include an internship in a cardiac center, practical training in a cardiology department, or professional seminars focused on EKG evaluation.
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Automated external defibrillators in theory and practice
Burianová, Lucie ; Sojková, Monika (advisor) ; Heczková, Jana (referee)
The bachelor thesis deals with the treatment and importance of location Automated external defibrillators in the particular units of Integrated Rescue System. In the theoretical part I describe basic anatomy and physiology of heart, patophysiology of selected cardiac arrhythmias. The largest part is devoted to Automated external defibrillators. In the several parts I explain philosophy of defibrillators, description of instruments, indication and contraindication of use, correctly use of defibrillators, the pros and cons their use in basic life support. In this bachelor thesis I write history of defibrillation and Automated external defibrillators. I mention studies, which were performed on this topic. In the practical part the quantitative method was used in the form of anonymous questionnaires. The survey was conducted at the particular units of Integrated Rescue System.
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Detection of atrial fibrillation using ECG Signals
Běhunčíková, Vendula ; Ronzhina, Marina (referee) ; Kozumplík, Jiří (advisor)
Atrial fibrillation is one of the most common cardiac rhythm disorders. The prevalence of atrial fibrillation is reported at 1-6 % of the adult population. The chances of developing atrial fibrillation increase with age. An early detection of this arrhythmia is a key to prevent more serious conditions. Many ways have been found to detect atrial fibrillation episodes in ECG including deep learning methods. The aim of this bachelor’s thesis is to describe the problem of atrial fibrillation and the methods used for detection in the ECG record, design an atrial fibrillation detector and test its results. Detector is implemented using a Matlab R2020b software.
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The impact of positive inotropic and antiarrhythmic drugs on cardiovascular system
Kočková, Radka ; Linhart, Aleš (advisor) ; Janoušek, Jan (referee) ; Štengl, Milan (referee)
Heart rate changes mediate the embryotoxic effect of antiarrhythmic drugs in the chick embryo A significant increase in cardiovascular medication use during pregnancy has occurred in recent years but only limited evidence on its safety profile is available. We hypothesized that drug-induced bradycardia is the leading mechanism of developmental toxicity. We tested metoprolol, carvedilol, or ivabradine for embryotoxicity and their acute effect on chick embryonic model. We used video microscopy and ultrasound biomicroscopy. Significant dose-dependent mortality was achieved in embryos injected with carvedilol and ivabradine. In ED4 embryos, metoprolol, carvedilol and ivabradine reduced the heart rate by 33%, 27%, and 55%, respectively, compared to controls (6%). In ED8 embryos this effect was more pronounced with a heart rate reduction by 71%, 54%, 53%, respectively (controls 36%). Cardiac output decreased in all tested groups but only proved significant in the metoprolol group in ED8 embryos. The number of -adrenergic receptors showed a downward tendency during embryonic development but a negative chronotropic effect of tested drugs was increasingly pronounced with embryonic maturity. This effect was associated with reduced cardiac output in chick embryos, probably leading to premature death....
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Heart rhythm disorders in prehospital emergency care
BUGAJ, Petr
The thesis Heart rhythm disorders in the pre-hospital emergency care is divided into the theoretical and practical part. The theoretical part includes the general description of the anatomy of the heart and its function, the electrical conduction system of the heart and the electrocardiography. The following chapters of the theory are divided according to the ECG of the heart in normal sinus rhythm. The author also mentioned the classification of heart rhythm disorders, including the clinic symptomatology with the EKG pathological heart rhythm and basic therapeutic practices. The practical part of this thesis examined the knowledge of paramedic of the heart rhythm disorders in the pre-hospital emergency care. The survey has three main questions: How do the paramedics value their own knowledge in the field of heart rhythm disorders? How are the paramedics prepared to deal with these disorders? What is the practice of the paramedics when dealing with heart rhythm disorders? The survey was focused on the interviews with the paramedics from Emergency Medical Service in the south of the Czech Republic. They answered 13 questions and the data were divided into 10 categories according to the qualitative research. The results of the research show that the knowledge of the paramedic of the heart rhythm disorders needs to be improved. The author suggests preparing education trainings and regular revisions, because the right anamnesis and the following treatment is essential, especially with malign arrhythmias.
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Kvalita života pacientů s arytmií
CHLOUBOVÁ, Ivana
The aim of the presented thesis is to map the influence of heart arrhythmia on patients´ lives and the possibility of using the conceptual model by Imogen King into the nursing care at the patient with arrhythmia. The set goals were accomplished on the basis of the empirical research which was processed by both quantitative and qualitative research methods. The first part of the research was performed by the quantitative method of collecting data from the survey. The aim of this survey was to map the quality of life of patients with the heart arrhythmia. The second part of the research was performed by the qualitative method of collecting data from the interview with the patient. Total of 127 of valid questionnaires were evaluated for the quantitative part of the research and 20 interviews with the patients with heart arrhythmia were performed for the qualitative part of the research. Based on the qualitative research was found out that the most significant symptom of arrhythmia is fast or irregular heartbeat, usually causing faintness, anxiety and uneasiness. The patients with arrhythmia are mostly limited during physical activities. There have not been found out any statistically significant differences between the persistence of arrhythmia and the health condition and the quality of life of the patient. That means that the persistence of arrhythmia in the researched group of patients does not influence the health condition and the life quality of the patients who took part in the survey ASTA. There was also monitored the relation between uneasiness (anxiety) and selected indicators (how the patients are able to work or study, concentrate or do physical activity). In this case were proven statistically significant differences. The qualitative research complemented the qualitative data. The quality of lives of the respondents was evaluated according to Imogen´s King conceptual framework and the responses of the respondents were ordered according to the framework system: personality system, interpersonal system and social system. As emerged from the responses of the respondents, the most negatively perceived symptom of arrhythmia is palpitation which causes anxiety, uneasiness and leads to sleeping disorders and lower physical activity. In contrast to the restrictions that have to be taken up in connection with the heart arrhythmia are only temporary and do not influence interpersonal and social relationships. The thesis brings a complex view of the problematics of the life quality of patients suffering from arrhythmia when this is not only a medical problem but it also influences patient´s mental and social well-being. The very important element which influences the successful cooperation of the arrhythmia patient and the doctor is the nurse who thanks to the emphatic attitude helps to build the faith in the good results of the medication - recovery and keeping the life quality. Using the conceptual framework in nursing, specifically during the treatment of arrhythmia patients helps to provide individualized nursing care and achieving improvement of the quality of the care provided and also the patient´s satisfaction.
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Detection of ventricular premature beats in long-term ECG
Šagát, Martin ; Kozumplík, Jiří (referee) ; Maršánová, Lucie (advisor)
The thesis deals with problems of premature ventricular complexes and ways of their detection. Heart’s basic physiological activities and the principle of their measurement are described in the theoretical part of the thesis. It deals specifically with the appearance and manifestations of ventricular extrasystoles in the ECG. The thesis also discusses various ways of detecting premature ventricular complexes. In this thesis, detection based on morphological features, wavelet transform and signal energy was used. All methods were implemented using Matlab and tested on all signals of the MIT-BIH Arrhythmia database.
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Nurses' knowledge of electrocardiography
Fialová, Iveta ; Křivková, Jana (advisor) ; Nikodemová, Hana (referee)
The bachelor thesis deals with the general knowledge of nurses in the area of electrocardiography, hence also its name Knowledge of nurses about electrocardiography. In the theoretical part, electrography, its history, recordings, pathological rhythms and nursing care associated with rhythm detection are described. In the empirical part, the results of quantitative research carried out by the questionnaire are interpreted over the methodology. At the end of the thesis are summarized the results of the questionnaire survey, which shows shortcomings in education during preparation for the general nurse's profession. These deficiencies are then manifested by insufficient knowledge of the recognition of basic pathological ECG rhythms, eventual defibrillation of some pathological rhythms. The lowest knowledge in this area has nurses with secondary education only. From the questionnaire survey, it is clear that nurses would appreciate not only more tuition during their general nurse training, but would also take part in electrocardiography workshops.
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The impact of positive inotropic and antiarrhythmic drugs on cardiovascular system
Kočková, Radka ; Linhart, Aleš (advisor) ; Janoušek, Jan (referee) ; Štengl, Milan (referee)
Heart rate changes mediate the embryotoxic effect of antiarrhythmic drugs in the chick embryo A significant increase in cardiovascular medication use during pregnancy has occurred in recent years but only limited evidence on its safety profile is available. We hypothesized that drug-induced bradycardia is the leading mechanism of developmental toxicity. We tested metoprolol, carvedilol, or ivabradine for embryotoxicity and their acute effect on chick embryonic model. We used video microscopy and ultrasound biomicroscopy. Significant dose-dependent mortality was achieved in embryos injected with carvedilol and ivabradine. In ED4 embryos, metoprolol, carvedilol and ivabradine reduced the heart rate by 33%, 27%, and 55%, respectively, compared to controls (6%). In ED8 embryos this effect was more pronounced with a heart rate reduction by 71%, 54%, 53%, respectively (controls 36%). Cardiac output decreased in all tested groups but only proved significant in the metoprolol group in ED8 embryos. The number of -adrenergic receptors showed a downward tendency during embryonic development but a negative chronotropic effect of tested drugs was increasingly pronounced with embryonic maturity. This effect was associated with reduced cardiac output in chick embryos, probably leading to premature death....
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