NDLI: Spatial resolution of catheter-based ventricular pace activation mapping by cross-correlation of signal-averaged electrograms

Content Provider	IEEE Xplore Digital Library
Author	Fitzgerald, T.N. Triedman, J.K.
Copyright Year	1998
Description	Author affiliation: Children's Hosp., Boston, MA, USA (Fitzgerald, T.N.)
Abstract	Prior work suggests resolution of ventricular pace mapping by ECG is 20 mm. Experimental pacing was performed in a swine model and computer-based signal processing algorithms were used to enhance 2-point spatial resolution of ventricular endocardial pace activation mapping. Unipolar sites in swine right ventricle (RV) and left ventricle (LV) were paced using multipolar catheters of known spacing. Up to 25 LV endocardial signals were recorded with a basket catheter. Catheter stability was assessed by fluoroscopy. A difference metric was calculated from changes in electrogram morphology and time shifts in signals generated from two different pacing sites. Receiver operating characteristics were calculated using this difference metric for pacing sites separated by 0-17.5 mm. Pacing sites in swine L V and RV can be distinguished when separated by >2.5 mm with good sensitivity and specificity.
Starting Page	517
Ending Page	520
File Size	332969
Page Count	4
File Format	PDF
ISBN	0780352009
ISSN	02766547
DOI	10.1109/CIC.1998.731916
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-09-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spatial resolution Catheters Signal resolution Electrocardiography Signal processing algorithms Signal mapping Stability Morphology Signal generators Sensitivity and specificity
Content Type	Text
Resource Type	Article

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