3.4 Characteristics of the CB procedure in the CST success
group
The characteristics of parameters during CB applications to the superior
and inferior PVs in 16 cases in the CST success group are summarized in
Table 2. Complete occlusion of the superior PVs with the CB was achieved
in 15/16 cases (93.8%) and the minimum NT for CB application to the
superior PVs ranged from -46°C to -60°C. In all 16 cases except case 9,
the first CB application to the inferior PVs succeeded in isolating the
superior PVs and no further applications were added. In case 9, because
the esophageal temperature during the first CB application to the
inferior PVs decreased below 15°C, the application was ceased and
superior PV isolation was achieved by the next application that was
added after the esophageal temperature recovered to above 30°C.