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. 2018 Sep 25;5(1):2–5. doi: 10.1016/j.hrcr.2018.09.008

Figure 2.

Figure 2

Activation map indicating the cavotricuspid isthmus–dependent reentry in the right atrium (RA) and roof-dependent reentry in the left atrium (LA) (middle upper panel: anterior view; middle lower panel: posterior view; white arrows indicate the directions of propagation of the reentrant circuits). Entrainment pacing and further measurements support the existence of concomitant reentrant circuits with postpacing interval (PPI)–tachycardia cycle length (TCL) ≤ 30 ms at the LA roof (A), RA lateral wall along the tricuspid annulus (B), and interseptum (D), while a PPI–TCL at the LA lateral wall is much longer (C). MA = mitral annulus; TA = tricuspid annulus.