Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"QT variability"”.
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QT variability calculation using a template matching algorithm and power spectral analysis
ECG interval measurement and variability analysis has proven to be a useful tool in investigating autonomic nervous system function. Traditionally, the R to R interval has been the thrust of research conducted in this field. QT variability is another topic on which little research has been done. …
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Model Based Analysis of QT Variability Independent of Heart Rate and Respiration
… aim of this thesis is to quantify repolarisation variability independent of heart rate and respiration, explore its prognostic value for improving risk prediction and examine its relationship to sympathetic neural activity. Parametric power contribution analysis methods and autoregressive …
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Automatic detection of qt and related intervals
… afld the Tend to measure the intervals such as QT, QT corrected (QTc), RT, QT_{max} and RT_{max} respectively. The second section deals with the analysis of different variabilities including heart rate variability (HRV), QT, QTc, RT, QT_{max} and RT_{max}. Using the R wave points as reference …
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Cardiac Autonomic Assessment and Diastolic Function in Individuals with Spinal Cord Injury
… examine the validity and reproducibility of the QT-variability index (QTVI) as a measure of cardiac autonomic function in individuals with spinal cord injury (SCI). The secondary purpose was to investigate the influence of cardiac autonomic activity and blood volume on diastolic function in …
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Phenotyping Behavioral Disorders in REM Sleep: Study of Digital Biomarkers of Neurodegeneration
… autonomic dysfunction in RBD. Heart Rate Variability (HRV) and QT Variability (QTV), studied across different sleep stages, were investigated as potential digital biomarkers of neurodegeneration. Apart from traditional HRV analysis, this thesis also considered the influence of respiration …