Safety and efficacy of cryoablation without the use of fluoroscopy.

BACKGROUND

Development of electroanatomical systems make it possible to perform ablations without the use of fluoroscopy. The aim of this study was to evaluate the efficacy and safety of cryoablation pro-cedures without the use of fluoroscopy.

METHODS

The study group consisted of 45 patients (14 female; age 36 ± 15 years) treated with cry-oablation using the EnSite electroanatomical system: 10 with ventricular extrasystoly from the right ventricle, 6 with the arrhythmogenic site near the left coronary artery, 17 patients with Wolff-Parkinson- -White syndrome (WPW), 2 patients with atrioventricular nodal reentrant tachycardia (AVNRT) type 2, 7 patients with AVNRT type 1, 3 patients with atrial tachycardia.

RESULTS

In 38 of the 45 patients (84%) cryoablation procedure was performed without the use of fluoroscopy. Cryoablation efficacy was 78.9%. In 5 patients unsuccessful cryoablation was fallowed by radiofrequency applications. Finally, efficacy reached 92.1%. There were no deaths. In 1 patient a small adverse event - right bundle branch block was observed after ablation of para-Hisian accessory path-way. No other adverse events were observed. In the long term follow-up efficacy was 89.5%.

CONCLUSIONS

Cryoablation using electroanatomical system without the use of fluoroscopy is a safe and efficient procedure and it is a possible alternative in most patients qualified for cryoablation.