KODEX-EPD for CBA procedure
KODEX-EPD system is a novel dielectric-based 3-dimentional mapping system. Since its first clinical use, it has been evolved in various electrophysiological procedures including CBA procedure7, 8, 10, 14, 15. Currently, CBA procedures are performed with the guidance of fluoroscopy in most centers, which is associated with potential harm of excessive radiation exposure. Moreover, the fluoroscopic navigation limits the further application of CBA technique. The KODEX-EPD system can provide real-time high-resolution LA images, which largely facilitates the catheter manipulation and PV occlusion verification in CBA procedure9. Furthermore, it could accurately detect various leak around the inflated balloon11, which could avoid frequent angiography. A recent study showed that the guidance of KODEX-EPD could effectively reduce the radiation exposure as well as contrast dye use12. The median radiation time of the present study was 25.3 min, which is longer than previous reports12. The reasons may be: i) frequent pulmonary venography to verify PV occlusion in our study; ii) the impact of learning curve because these data were collected as soon as the KODEX–EPD system became available in our center.