Double VTs associated with an anatomical isthmus identified by a
We demonstrated a 47 year-old woman with ischemic-VT with repetitive
ICD-shocks, requiring ablation. Pre-procedural CT demonstrated a single
anatomical channel on the inferior-basal infarcted area between
<3mm wall thinning area and the mitral annulus, which
suggested the circuit of two VTs observed. Additionally, distribution of
<2mm and <3mm scars can explain the mechanism of the
variation of QRS morphology and S-QRS interval during entrainment.
Ablation on this region resulted in no VT- inducibility and absence of
any VTs for 2yrs. CT wall thinning data may allow us to understand the
mechanism and circuit of VT and aid VT ablation procedures.