Table 3.
Comparison between the second (Excalibur) and third (X3)-generation balloon procedures characteristics.
| Excalibur N = 26 |
X3 N = 24 |
p | |
|---|---|---|---|
| Ablation | |||
| Laser duration on left pulmonary veins—min | 33 (21.5–37) | 11.6 (9–17.5) | <0.001 |
| Laser duration on right pulmonary veins—min | 35 (27–42) | 9 (6.6–13.5) | <0.001 |
| Total Laser duration—min | 69 (55–76) | 22 (19–29) | <0.001 |
| Number of left veins manual shots | 49 (39–55.8) | 8 (0–13) | <0.001 |
| Number of right veins manual shots | 51 (41–58) | 0 (0–6) | <0.001 |
| Number of manual shots | 101 (89–109.8) | 14 (8.3–21.3) | <0.001 |
| Number of left veins RAPID shots | 0 | 2.5 (0–6) | |
| Number of right veins RAPID shots | 0 | 3 (0–5.8) | |
| Number of RAPID shots | 0 | 12 (0–19.5) | |
| All PV isolated at first pass | 15 (58) | 17 (71) | 0.388 |
| All PV isolated at procedure end | 24 (92) | 22 (92) | 1 |
| AF onset during procedure | 3 (12) | 2 (8) | 1 |
| Procedure data | |||
| Procedure duration—min | 151.5 (128.5–167) | 111 (100–128) | <0.001 |
| Iodinated contrast media—ml | 2 (2–3) | 2 (2–3.8) | 0.501 |
| Fluroscopy duration—min | 17.8 (12.9–23.3) | 14.9 (11.5–24.4) | 0.382 |
| Dose-area product—cGy.cm2 | 443.5 (268.3–775.5) | 439 (220–869) | 0.645 |
| Complication—no (%) | 1 (4) | 1 (4) | |
| Cardiac tamponade | 1 (4 | 0 | |
| Transient phrenic nerve palsy | 0 | 1 (4) | |
| AF recurrence—no (%) | 4 (15) | 3 (13) | 1 |
AF: atrial fibrillation; PV: pulmonary veins.