Key result
LocaLisa navigation is linked to ~58% lower fluoroscopy time during AVNRT ablation.
Why the study?
Radiofrequency ablation requires fluoroscopy for catheter placement, resulting in significant radiation exposure, and the impact of intracardiac navigation systems on reducing fluoroscopy duration was investigated.
Does an intracardiac navigation system reduce fluoroscopy duration in patients undergoing routine radiofrequency ablation?
Cohort (n=365)
Does an intracardiac navigation system reduce fluoroscopy duration in patients undergoing routine radiofrequency ablation?
The use of a non-fluoroscopic catheter navigation system significantly reduces fluoroscopy time during routine RF ablations for AVNRT and atrial flutter.
Answers are grounded in this paper and cite their sources.
May reduce fluoroscopy time in routine RF ablations; leaves open effects on safety, efficacy, and long-term outcomes.
AIMS: Radiofrequency (RF) ablation requires placement of several catheters at critical positions. The catheters are positioned with fluoroscopy, resulting in a significant radiation exposure. We have investigated to what degree an intracardiac navigation system reduces the fluoroscopy duration in different groups of routine RF ablations. METHODS AND RESULTS: The fluoroscopy time was evaluated in 365 consecutive routine RF ablations, performed between 2002 and 2005. An intracardiac navigation system (LocaLisa, Medtronic) was used from 2003. The data were prospectively entered into a database and subsequently retrieved, and the procedures classified as being performed with fluoroscopy only or with the aid of the LocaLisa system. After introduction of the LocaLisa system, the median fluoroscopy time decreased from 24 to 10 min in the 141 atrioventricular nodal re-entry tachycardia (AVNRT) ablations and from 43 to 28 min in the 71 atrial flutter (AFl) ablations (P<0.005 for both). In the 145 Wolff-Parkinson-White (WPW) ablations, a decrease from 27 to 23 min was observed (P=0.03). The decrease in AVNRT and AFl, but not in WPW was associated with the introduction of the LocaLisa system. CONCLUSION: The use of the LocaLisa system during RF ablations significantly reduced the fluoroscopy time in AVNRT and AFl ablations, by a median of 58% and 46%, respectively.
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Kesek et al. (2006) conducted a cohort in Radiofrequency ablation for AVNRT, atrial flutter, or WPW (n=365). Intracardiac navigation system (LocaLisa) vs. Fluoroscopy only was evaluated on Median fluoroscopy time (minutes) in AVNRT ablations (p=<0.005). The use of the LocaLisa intracardiac navigation system significantly reduced median fluoroscopy time in AVNRT (24 to 10 min, P<0.005) and atrial flutter ablations (43 to 28 min, P<0.005).
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