Article Text

ASSA14-02-08 Cryoballoon ablation for paroxysmal atrial fibrillation
  1. Y Guitang,
  2. L Ming,
  3. W Zulu,
  4. L Yan-chun,
  5. J Zhi-qing,
  6. D Mingying,
  7. H Ya-ling
  1. Department of Cardiology, Institute of Cardiovascular Research of People’s Liberation Army, Shenyang General Hospital, Shenyang, Liaoning 110840, China


Objective To explore the methods, strategy and short-term outcome of cyroballoon ablation for paroxysmal atrial fibrillation.

Methods To analyse the data of cryoballoon ablation for the first 5 patients with PAF in our hospital.

Results The mean procedure time of the 5 patients were 153 ± 43.5 min (170 min, 100 min, 120 min, 210 min and 165 min). The mean fluoroscopy time was 51.2 ± 15.0 min (54 min, 33 min, 41 min, 72 min and 56 min). The mean time of cryoballoon ablation in each pulmonary vein was 209.0s ± 74.7s (29s – 300s). The temperature of the cryoballoon was -43.5 ± 8.6°C (-27°C – -61°C). The cryoballoon ablation times in each vein was 3 ± 1.3 (2–6 times per pulmonary vein). The complications of the procedure (such as phrenic nerve palsy, pericardia tamponade) was not happened. In one patient, the left pulmonary vein potential was not completely isolated. The radiofrequency ablation catheter was used to achieve pulmonary vein isolation entirely. After 1 or 2 months' follow-up, atrial fibrillation was not happened in all 5 patients.

Conclusions Cryoballoon ablation of atrial fibrillation is relatively simple, no 3D mapping, and shorter learning curve. But the X-ray fluoroscopy time is longer in earlier period and need making progress.

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