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. 2011 Apr 15;13(7):984–991. doi: 10.1093/europace/eur055

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Published on behalf of the European Society of Cardiology. All rights reserved. © The Author 2011. For permissions please email: journals.permissions@oxfordjournals.org.

The online version of this article has been published under an open access model. Users are entitled to use, reproduce, disseminate, or display the open access version of this article for non-commercial purposes provided that the original authorship is properly and fully attributed; the Journal, Learned Society and Oxford University Press are attributed as the original place of publication with correct citation details given; if an article is subsequently reproduced or disseminated not in its entirety but only in part or as a derivative work this must be clearly indicated. For commercial re-use, please contact journals.permissions@oxfordjournals.org.

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Simultaneous data sets are shown for Patients 2 (left) and 4 (right). These include (from top to bottom in the figure) the surface electrocardiogram, right ventricular bipolar electrogram, V1 impedance waveform, V3 impedance waveform, and left ventricular pressure trace.