Clinical Research in Cardiology

, Volume 105, Issue 2, pp 106–116 | Cite as

Experience matters: long-term results of pulmonary vein isolation using a robotic navigation system for the treatment of paroxysmal atrial fibrillation

  • Andreas Rillig
  • Tina Lin
  • Boris Schmidt
  • Britta Feige
  • Christian Heeger
  • Jascha Wegner
  • Erik Wissner
  • Andreas Metzner
  • Anita Arya
  • Shibu Mathew
  • Peter Wohlmuth
  • Feifan Ouyang
  • Karl-Heinz Kuck
  • Roland Richard Tilz
Original Paper

Abstract

Background

Long-term results after circumferential pulmonary vein isolation (CPVI) for the treatment of paroxysmal atrial fibrillation (PAF) using a robotic navigation system (RNS) have not yet been reported.

Objective

To evaluate long-term results of patients with PAF after CPVI using RNS.

Methods

In this study, 200 patients (n = 151 (75.5 %) male; median age 62.2 (54.7–67.7) years) with PAF were evaluated. In 100 patients, RNS (RN-group) was used for CPVI and compared to 100 manually ablated control patients (MN-group). Radiofrequency was used in conjunction with 3D electroanatomic mapping. Power was limited to 30 watts (W) at the posterior left atrial (LA) wall in the first 49 RNS patients (RN-group-a). After esophageal perforation occurred in one RN-group-a patient, maximum power was reduced to 20 W for the subsequent 51 patients (RN-group-b).

Results

After a median follow-up of 2 years, single (77/100 vs 77/100, p = 0.89) and multiple (90/100 vs 93/100, p = 0.29) procedure success rates were comparable between RN-group and MN-group. Single procedure success rate was significantly lower in RN-group-a as compared to RN-group-b (65.3 vs 88.2 %, p = 0.047). In RN-group-a patients, procedural times [200 (170–230) vs 152 (132–200) minutes, p < 0.01] and fluoroscopy times [16.6 (12.9–21.6) minutes vs 13.7 (9.5–19) minutes, p = 0.043] were significantly longer compared to RN-group-b patients.

Conclusion

Long-term success rate after CPVI using RNS was comparable to manual ablation. Despite a lower power limit of 20 W at the posterior LA wall, single procedure success rate was higher in RN-group-b as compared to RN-group-a. Procedure time and fluoroscopy time decreased, whilst success rate increased with increasing experience in the RN-group.

Keywords

Paroxysmal atrial fibrillation Long-term outcome Robotic navigation Catheter ablation Pulmonary vein isolation Learning effect 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Andreas Rillig
    • 1
  • Tina Lin
    • 1
  • Boris Schmidt
    • 1
  • Britta Feige
    • 1
  • Christian Heeger
    • 1
  • Jascha Wegner
    • 1
  • Erik Wissner
    • 1
  • Andreas Metzner
    • 1
  • Anita Arya
    • 1
  • Shibu Mathew
    • 1
  • Peter Wohlmuth
    • 2
  • Feifan Ouyang
    • 1
  • Karl-Heinz Kuck
    • 1
  • Roland Richard Tilz
    • 1
  1. 1.Department of CardiologyAsklepios Klinik St. GeorgHamburgGermany
  2. 2.Asklepios proresearchHamburgGermany

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