Table 4.
Parameters of cryo kinetics
| PV location | BFT (s) | BNT (ºC) | BWT (s) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 23-mm CB | 28-mm CB | p | 23-mm CB | 28-mm CB | p | 23-mm CB | 28-mm CB | p | |
| LSPV | 13.7 ± 4.2 | 23.8 ± 9.1 | < 0.001 | -52.8 ± 6.5 | -46.8 ± 7.1 | < 0.001 | 19.8 ± 7.7 | 25.3 ± 11.0 | 0.001 |
| LIPV | 14.5 ± 3.4 | 27.3 ± 7.8 | < 0.001 | -50.2 ± 4.9 | -42.0 ± 4.8 | < 0.001 | 17.5 ± 5.7 | 17.9 ± 5.9 | 0.656 |
| RIPV | 13.9 ± 4.0 | 28.1 ± 8.9 | < 0.001 | -52.6 ± 5.9 | -42.3 ± 6.9 | < 0.001 | 20.0 ± 7.6 | 18.4 ± 8.4 | 0.237 |
| RSPV | 12.1 ± 3.0 | 21.3 ± 7.6 | < 0.001 | -56.8 ± 5.1 | -49.7 ± 6.7 | < 0.001 | 26.0 ± 6.8 | 30.4 ± 11.5 | 0.008 |
| Total | 13.6 ± 3.8 | 25.2 ± 8.8 | < 0.001 | -53.1 ± 6.1 | -45.1 ± 7.1 | < 0.001 | 20.8 ± 7.6 | 22.7 ± 10.6 | 0.014 |
Values are mean ± SD. p: p-value (unpaired Student's t-test). CB: cryoballoon; BFT: balloon freezing time from 0 to -30ºC; BNT: balloon nadir temperature; BWT: balloon warming time from -30 to +15ºC; LSPV: left superior pulmonary vein; LIPV: left inferior pulmonary vein; RIPV: right inferior pulmonary vein; RSPV: right superior pulmonary vein.