کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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2921664 | 1405418 | 2016 | 7 صفحه PDF | دانلود رایگان |
BackgroundFocal impulse and rotor modulation (FIRM) has been proposed as a novel approach for the treatment of atrial fibrillation (AF).ObjectiveThis study aimed to investigate the efficacy of FIRM as a stand-alone procedure for the treatment of paroxysmal AF.MethodsA total of 27 patients with paroxysmal AF underwent sequential biatrial computational mapping. Sites with repetitive centrifugal or spiral reentry-like activity were considered to be AF-sustaining sources and targeted by irrigated radiofrequency (RF) ablation. All patients were seen in the outpatient clinic after 1, 3, and 6 months and thereafter every 6 months. Cardiac monitors were implanted 3 months before ablation in 17 patients (63%).ResultsRepetitive activity interpreted as sustained AF sources was found in all patients, with an average of 3.0 ± 1.1 sources located in the left atrium and 0.6 ± 0.6 sources in the right atrium. The majority of sources were rotors (95%). The total source-ablation radiofrequency time was 20.0 ± 9.0 minutes. At 15.2 ± 3.9 months of follow-up, the prespecified end point of <1% AF burden (outside a 3-month blanking period) was achieved in 2 of the 17 continuously monitored patients (12%). Of all the 27 patients who underwent FIRM, AF episodes of ≥30 minutes were recorded in 23 (85%), while AF episodes ≥60 minutes were recorded in 21 patients (78%).ConclusionThis study suggest that biatrial ablation of localized patient-specific sources alone, as detected by this method, is not sufficient to reduce paroxysmal AF burden in the majority of patients.
Journal: Heart Rhythm - Volume 13, Issue 9, September 2016, Pages 1768–1774