RT-157
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Non-contact mapping. How does this affect our ability to ablate difficult arrhythmias?
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Anthony W.C. Chow, Richard J. Schilling, Nicholas S. Peters, D.Wyn Davies.
Imperial College School of Medicine and St. Mary’s Hospital, London, UK
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Abstract
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There are a number of limitations of conventional techniques in
mapping cardiac arrhythmias, including a lack of resolution and time required for mapping. The development
of non-contact mapping, capable of reconstructing over 3300 electrograms to produce high-resolution
endocardial maps, has greatly improved our ability to accurately map and guide ablation of complex cardiac
arrhythmias. In this paper we summarise the theoretical basis of non-contact mapping, the ongoing system
developments of the system and the validation studies to assess the accuracy and effectiveness of this mapping
system.
We examined the clinical utility of the non-contact system to map different cardiac arrhythmias and present the
clinical results of mapping studies of both human atrial and ventricular arrhythmias. More recent applications of
the technology to map more complex cardiac arrhythmias are reviewed, including data from left atrial mapping
of focal activation and atrial arrhythmias in patients with surgically corrected congenital heart disease.
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Key Words
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