| Objective: To investigate the effectiveness and safety of using the Ensite NavX three-dimensional(3D)mapping system during radiofrequency catheter ablation(RFCA)of left accessory pathway disorders(LAP).Methods: A total of 91 patients having their LAP treated by interatrial septum piercing RFCA between June 2014 to December 2016,were classified into the study group(underwent RFCA under the guidance of Ensite NavX 3D mapping system,n=45)and the control group(underwent RFCA under the guidance of traditional transient X fluoroscopy technology,n=46).X-ray irradiation times and exposure doses during the course of the operations were recorded.Time taken to place the mapping catheter along with total duration of operations and procedural complications were compared between the groups.Results: The X-ray irradiation times and exposure doses in the course of manipulating the ablation catheters were significantly in the study group compared to control(5.1 ± 2.3 min vs 13.1 ± 3.1 min;P < 0.05 and 5.7 ± 2.6 mGy vs 17.8 ± 4.3 mGy;P<0.05,respectively.The total duration of operation was also significantly shorter in the study group compared to control(59.1±18.8 min vs 62.3 ± 20.6 min;P>0.05.No procedural complications were reported in patients from both groups.Conclusion: Though LAP RFCA carried out under the guidance of the Ensite Navx 3D mapping system and traditional transient X-ray fluoroscopy reported similar safety profile,the irradiation time and exposure to X-rays while operating the ablation catheter along with total operation duration was significantly reduced in the Ensite NavX group indicating a superior efficacy over X-ray fluoroscopy guided RFCA. |
