Please click here to obtain permission to reproduce this image.
Click on image to view larger version.
Figure 2 (A and B) Activation maps in pulmonary artery (PA) and left anterior oblique (LAO)views of Patient #13 showing re-entry using the mitral isthmus. The tachycardia cycle length (CL) was 420 ms. (C and D) After ablation and block at the mitral isthmus (dark red line), a new single loop tachycardia, now with a cycle length of 368 ms, was induced. The critical isthmus was identified at the posterior wall, between two previously ablated areas. Ablation at this site eliminated the tachycardia. Propagation maps for each of the two tachycardias are shown as an inset in the lower part of each panel. LL = left lateral; LIPV = left inferior pulmonary vein; LSPV = left superior pulmonary vein; MV = mitral valve; PA = postero-anterior; RIPV = right inferior pulmonary vein; RSPV = right superior pulmonary vein.
|
