Figure 1.
A: A three-dimensional electroanatomical biatrial activation
map (CARTO3) during typical atrial flutter. The activation wavefront is
found to revolve in a counterclockwise manner around the TA. The
atriotomy of superior transseptal approach line (blue dots) extends from
the lateral wall of the right atrium through the septum to the roof of
the left atrium. The brown dots indicate ablation points. B: An
activation map of the right atrium during AT, which was induced after
cavotricuspid isthmus ablation. The activation wavefront rotates the
right atrial part of the incision line in a clockwise manner through the
two penetration points of the incision. AT was rapidly terminated after
the first radiofrequency application at conduction site (white asterisk)
of the right atrial free wall.
The yellow line indicates the superior transseptal incision. The brown
dots indicate ablation points. White circles indicate possible sites of
IVC cannulation.
AT, atrial tachycardia; IVC, inferior vena cava; TA, tricuspid annulus;
MA, mitral annulus.