Figure 6. LA Activation Map during Pacing from the Right Inferior PV
The earliest site was broad and located in the RA posterior wall.
Extensive ablation at the site did not result in PV isolation. Single
radiofrequency application at the right PV carina (indicated by a pink
tag) achieved isolation of the right PVs. LA, left atrium; PV, pulmonary
vein; RA, right atrium; RIPV, right inferior PV.