Table 4.
Procedural and biophysical parameters associated with acute PVI per CBA
| POLARx | AFA‐Pro | |||||
|---|---|---|---|---|---|---|
| Variables | CBA with PVI | CBA without PVI | p‐value | CBA with PVI | CBA without PVI | p‐value |
| Total number of CBAa | 232 | 67 | 214 | 50 | .349 | |
| Grade of PV occlusion | ||||||
| Grade 4 | 208 (89.7%) | 36 (53.7%) | <.001 | 174 (81.3%) | 30 (60.0%) | <.001 |
| Grade 3 | 22 (9.5%) | 30 (44.8%) | <.001 | 39 (18.2%) | 18 (36.0%) | .006 |
| Grade 2 | 2 (0.9%) | 1 (1.5%) | .53 | 1 (0.5%) | 2 (4.0%) | .093 |
| Time to balloon temperature −30°C, s | 27 (25, 30) | 27 (25, 30) | .807 | 30 (28, 35) | 37 (31, 40) | <.001 |
| Time to balloon temperature −40°C, s | 32 (30, 38) | 33 (30, 38) | .430 | 53 (43, 72) | 66 (52, 91) | .015 |
| Balloon nadir temperatureCB (°C) | −57 (−61, −53) | −50 (−54, −47) | <.001 | −48 (−53, −45) | −43 (−47, −39) | <.001 |
| Thawing time to 0°C, s | 17 (14, 22) | 13 (10, 14) | <.001 | 9 (8, 12) | 6 (5, 8) | <.001 |
Note: Values are presented as median (25th, 75th percentile) or as count (%).
Abbreviations: AFA‐Pro, Arctic Front Advance Pro; CBA, cryoballoon application; PVI, pulmonary vein isolation.
a
Only CBA>100 s was incorporated in the data.