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Cluster analysis in biosignal processing
Kalous, Stanislav ; Archalous, Tomáš (referee) ; Kolářová, Jana (advisor)
This diploma thesis deals with cluster analysis for long-term electrocardiograms (ECG) clustering. The linear filtration is used for ECG preprocessing. The ECG sign segmenting in single heart cycles is based on the detection QRS complex and consequently to an application of dynamic time warping algorithms. To an application of all these mentioned processes and to results interpretation, a program called Cluster analysis has been created in the Matlab background. The results of this diploma thesis confirm that cluster analysis is able to distinguish cardiac arrhythmias which are typical with their shape distinctness of normal heart cycles.
The after-care management of patients with cardiac arrhythmia after a discharge out of the cardiac care unit.
JANÁSOVÁ, Věra
Heart rhythm disorders alias arrhythmias rank among the most frequent heart diseases. They result from a disorder of generation or conduction of electric impulses at the heart. There are often arrhythmias of which one is not conscious and which may be detected in long-term ECG monitoring. Patients{\crq} problems mostly arise from rhythm disorders that are paroxysmal or permanent. These may endanger the patient{\crq}s life. Subjective troubles reported by patients include uncomfortable heart palpitation, fatigue, breathlessness, distress, shorter breath, dizziness or even unconsciousness; sometimes patients may feel unpleasant chest pain. These subjective feelings are very uncomfortable for a person suffering from heart arrhythmia and can make it impossible for him/her to manage routine daily activities. The task of a nurse is to help a patient overcome this difficult period and instruct him/her of a healthy lifestyle as a prevention of heart diseases. In this respect, cooperation between the nurses in hospitals and the nurses in cardiologic out-patient departments is important. Four hypotheses were raised. The first hypothesis was to confirm that the care of patients with heart arrhythmia after their discharge to home-care is sufficient in respect of their needs. This hypothesis was confirmed. The second hypothesis was to confirm that the patients are sufficiently instructed on prevention of recurrence of heart arrhythmias. This hypothesis was not confirmed. The third hypothesis was to confirm that patients know the impacts of heart arrhythmias on their overall health state, and was not confirmed. The fourth hypothesis was to confirm that patients are aware of other options of the care after discharge from hospital. This hypothesis was not confirmed. In the practical part of the thesis I used a quantitative research. The research was conducted in hospitals in České Budějovice, Jihlava, Plzeň and Prague, in the form of anonymous questionnaires distributed to patients in cardiologic out-patient departments. The results have been processed in charts and tables in the SPSS programme. The objectives were fulfilled. The appendix to the thesis contains a brief proposal suggesting on what the nursing care should be focused after a patient{\crq}s discharge from hospital. The results will be offered to deputy managers for the nursing care and to nurses in cardiologic out-patient departments.

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