Title :
A method for determining local activation direction in the atrium
Author :
Schoenwald, Adam T. ; Sahakian, Alan V. ; Swiryn, Steven
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Northwestern Univ., Evanston, IL, USA
Abstract :
Presents a method for determining local 3-dimensional activation directions in human atria. The authors describe the measuring catheter used, the filtering of the raw signals, the detection of electrograms, and finally the calculation of the resultant vector which estimates local activation direction. This technique is then used to demonstrate that transient “linking” of endocardial activation during atrial fibrillation exhibits sudden, not gradual, transitional behavior
Keywords :
electrocardiography; medical signal processing; atrial fibrillation; atrium local activation direction determination method; electrograms detection; endocardial activation; local 3-dimensional activation directions; measuring catheter; raw signals filtering; sudden transitional behavior; transient linking; Atrial fibrillation; Cardiology; Catheters; Delay; Digital filters; Electrodes; Filtering; Humans; Information filtering; Information filters; Low pass filters; Nonlinear filters; Signal detection; Timing;
Conference_Titel :
Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2050-6
DOI :
10.1109/IEMBS.1994.412160
