PMC5420064_01
Intracardiac electrogram during ablation on the left septum with the catheter position as shown in Figure 2, Figure 3. Note the atrial signals at the site of success (first beat) followed by an immediate junctional acceleration beat.
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A balanced atrioventricular signal with multicomponent atrial electrograms and low amplitude potentials was identified in the posteroseptal aspect of the mitral annulus, 3 mm above the coronary sinus (Figure 1).
Catheter position at the site of success in the RAO projection. The CS decapolar catheter provides a useful landmark for transseptal access and ablation. CS = coronary sinus; RAO = right anterior oblique.
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This left site clearly corresponded with the usual target for a conventional right-sided procedure (Figure 2, Figure 3).
Catheter position at the site of success in the LAO projection. CS = coronary sinus; LAO = left anterior oblique.
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This left site clearly corresponded with the usual target for a conventional right-sided procedure (Figure 2, Figure 3).