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

fYear

1994

fDate

3-6 Nov 1994

Firstpage

1

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/IEMBS.1994.412160

Filename

412160