Sökning: "QRST cancellation"

Hittade 2 avhandlingar innehållade orden QRST cancellation.

1. 1. Signal Characterization of Atrial Arrhythmias using the Surface ECG

   Författare :Martin Stridh; Institutionen för elektro- och informationsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signalbehandling; Signal processing; Atrial fibrillation; Atrial arrhythmias; Frequency estimation; Time-frequency analysis; QRST cancellation; ECG;

   Sammanfattning : This doctoral thesis is comprised of five parts which deal with different signal processing problems in ECG-based characterization of atrial arrhythmias. Such characterization requires that the ventricular activity has first been cancelled in the ECG. LÄS MER

3. 2. Electrical remodeling in arial fibrillation - assessment using surface electrocardiograms, prognostic implications and potential reversal

   Författare :Andreas Bollmann; Kardiologi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; atrial fibrillation; electrocardiography; stroke; biomarkers;

   Sammanfattning : The fibrillatory rate of the surface ECG during atrial fibrillation (AF) has been suggested for quantification of the individual atrial remodeling, to monitor interventions and to predict the response to different therapies. In this dissertation, the relation between fibrillatory rate of the surface ECG and (1) clinical and echocardiographic variables, (2) the outcome of cardioversion, (3) circulating markers of inflammation and hemostasis, (4) the risk of left atrial thrombus formation, (5) the risk of stroke, and (6) the effects of candesartan on the fibrillatory rate were investigated in human persistent atrial fibrillation (AF). LÄS MER