Research Article
Outcomes of Cryoballoon Ablation in High- and Low-Volume Atrial Fibrillation Ablation Centres: A Russian Pilot Survey
Table 3
CBA procedure outcomes in centres with low-, medium-, and high-catheter-ablation experience (all types of arrhythmia ablations).
| |
Parameter |
I
Low ablation experience (4 centres) |
II
Medium ablation experience (5 centres) |
III
High ablation experience (4 centres) | | | Between I and II | Between II and III | Between I and III |
| | Median number of catheter-ablation procedures | 573 (IQR: 208–1016) | 2445 (IQR: 2149–3416) | 5866 (IQR: 3622–8575) | 0.69 | 0.01 | 0.007 | Median number of
AF ablation procedures | 33 (IQR: 23–84) | 284 (IQR: 52–353) | 1948 (IQR: 1291–3079) | 0.02 | 0.02 | <0.001 | | Mean number of CBAs | 11 (IQR: 9–13) | 24 (IRQ: 18–33) |
69 ± 33.5 | 0.01 | 0.25 | 0.002 | Total number
of CBAs | 43 | 138 | 276 | NA | NA | NA | | Fluoroscopy time, min | 30.8 ± 11.7 | 29.9 ± 3.0 | 25.0 ± 12.3 | 0.08 | 0.05 | 0.97 | | Procedure time, min | 165.0 ± 41.0 | 159.2 ± 43.4 | 142.8 ± 27.6 | 0.92 | 0.48 | 0.53 | | Arrhythmia-free rate at 6 months, % | 66.6% | 56.2% | 67.5% | 0.11 | 0.05 | 0.87 | | Major complications, (%) | 1 (2.3%) | 1 (0.7%) | 5 (1.8%) | 0.42 | 0.67 | 0.58 | | Minor procedure-related events, (%) | 2 (4.6%) | 4 (2.9%) | 26 (9.4%) | 0.63 | 0.015 | 0.49 | | Total procedure-related events, (%) | 3 (6.9%) | 5 (3.6%) | 31 (11.2%) | 0.40 | 0.009 | 0.60 |
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AF: atrial fibrillation; CBA: cryoballoon ablation; IQR: interquartile range.
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