Catheter Ablation of Ventricular Arrhythmias using a Fluoroscopy Image Integration Module

Pacing Clin Electrophysiol. 2015 Jun;38(6):700-5. doi: 10.1111/pace.12635. Epub 2015 Apr 22.

Abstract

Background: The impact of the CartoUnivu™ technology (Biosense Webster, Diamond Bar, CA, USA) on fluoroscopy exposure compared to a conventional approach using electroanatomical mapping (Carto 3™) was evaluated in patients undergoing radiofrequency ablation for ventricular tachyarrhythmias (VT).

Methods and results: We prospectively evaluated 23 patients undergoing VT ablation using the CartoUnivu™ technology. The CartoUnivu™ Module integrates fluoroscopic images and cine loops into the electroanatomical mapping system. As a control group, 23 out of 88 VT patients (ablated using conventional fluoroscopy supplemented by electromagnetic mapping with the Carto 3™ System) were matched for age, gender, body surface area, operator, redo-procedure, presence of coronary artery disease, and left ventricular dysfunction using propensity score matching. A significant reduction in fluoroscopy exposure was observed in the CartoUnivu™ group when compared to the conventional group (10.57 ± 7.93 minutes vs 18.52 ± 11.24 minutes, P_= 0.008; 611 cGy/cm(2) vs 1650 cGy/cm(2) , P = 0.001). In multivariate analysis, the CartoUnivu™ module was an independent predictor of reduced fluoroscopy use.

Conclusion: This is a report on the clinical application of the CartoUnivu system for VT ablation. CartoUnivu™ markedly reduced fluoroscopy time and dose compared to conventional fluoroscopy/electroanatomical mapping.

Keywords: catheter ablation; image integration; ventricular tachycardia.

Publication types

  • Observational Study

MeSH terms

  • Aged
  • Cardiac Imaging Techniques*
  • Catheter Ablation / methods*
  • Coronary Angiography
  • Female
  • Fluoroscopy
  • Humans
  • Male
  • Middle Aged
  • Propensity Score
  • Prospective Studies
  • Radiation Dosage
  • Tachycardia, Ventricular / surgery*
  • Treatment Outcome