QRS amplitude - cardioegypt2011

What is epicardial VT ?
o VTs in which the origin or the critical sites of
the reentrant circuit are located in the
subepicardial tissue as suggested by
entrainment maneuvers and/or termination
withen 10 seconds of standard RF pulses.
o Critical epicardial sites may be entained or
interrupted from both the epicardial and
endocardial surfaces making it difficult to
demonstrate the presence of a truly epicardial
circuit in a given case
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