In order to bring you the best possible user experience, this site uses Javascript. If you are seeing this message, it is likely that the Javascript option in your browser is disabled. For optimal viewing of this site, please ensure that Javascript is enabled for your browser.

The free consultation period for this content is over.

It is now only available year-round to ESC Professional Members, Fellows of the ESC, and Young combined Members

Role of pre-procedural CT-imaging on catheter ablation in patients with atrial fibrillation: procedural outcomes and radiological exposure.

Session Poster Session 3

Speaker Andrea Di Cori

Event : ESC Congress 2019

  • Topic : arrhythmias and device therapy
  • Sub-topic : Catheter Ablation of Arrhythmias
  • Session type : Poster Session

Authors : A Di Cori (Pisa,IT), G Zucchelli (Pisa,IT), L Faggioni (Pisa,IT), L Segreti (Pisa,IT), V Barletta (Pisa,IT), R De Lucia (Pisa,IT), S Viani (Pisa,IT), L Paperini (Pisa,IT), V Della Tommasina (Pisa,IT), M Parollo (Pisa,IT), T Cellamaro (Pisa,IT), G Branchitta (Pisa,IT), E Soldati (Pisa,IT), D Caramella (Pisa,IT), MG Bongiorni (Pisa,IT)

Authors:
A. Di Cori1 , G. Zucchelli1 , L. Faggioni2 , L. Segreti1 , V. Barletta1 , R. De Lucia1 , S. Viani1 , L. Paperini1 , V. Della Tommasina1 , M. Parollo1 , T. Cellamaro1 , G. Branchitta1 , E. Soldati1 , D. Caramella2 , M.G. Bongiorni1 , 1Azienda Ospedaliero-Universitaria Pisana, Cardiac-Thoracic and Vascular Department - Pisa - Italy , 2University Hospital of Pisa, Diagnostic and Interventional Radiology, New Santa Chiara Hospital, AOUP, University of Pisa, Italy - Pisa - Italy ,

Topic(s):
Catheter Ablation of Arrhythmias

Citation:
European Heart Journal ( 2019 ) 40 ( Supplement ), 1780

Introduction: Cardiac computerized tomography (CT) is commonly used to study left atrial (LA) and pulmonary veins (PVs) anatomy before atrial fibrillation (AF) ablation. However, it remains unclear whether pre-procedural imaging actually is associated with an improvement of efficiency, efficacy, and safety.

Purpose: Aim of the the study was to determine the impact of pre-procedural imaging using CT with 3-D reconstruction on procedural outcomes and radiological exposure in patients who undergo radiofrequency catheter ablation (RFA) to eliminate AF.

Methods: In this registry, 493 consecutive patients (age 62±8 years, 70% male) with paroxysmal (316) or persistent (177) AF who underwent RFA were included. A CT scan was obtained in 324 (66%) patients (CT Group) prior to RFA, while 169 (34%) didn't have any pre-procedural imaging (No-CT Group). Antral PVs isolation was performed in all patients along using an open-irrigation-tip catheter with a 3-D electroanatomical navigation system. Additional ablation applications were targeted if required. Procedural outcome, including radiological exposure, and clinical outcomes were compared among patients who underwent RFA with (CT-Group) and without (No CT-Group) pre-procedural imaging.

Results: Acute PV isolation was obtained in all patients. Additional ablation targets were targeted along the CTI (71/324 [22%] vs. 40/169 [24%], P=NS), the roof line (74/324 [23%] vs. 40/169 [24%], P=NS), the mitral isthmus (33/324 [10%] vs. 12/169 [7%], P=NS) and CFAEs (28/324 [8.6%] vs. 12/169 [7.1%], P=NS), without significant differences among groups. Complication rate were comparable between CT and No CT patients (4.3% vs 3%, P=0.7). In one Redo procedure of the No-CT Group, for the impossibility of identifying left PVs, a 3D LA fluoro-angiography was performed, which confirmed a left PVs occlusion. (Figure) No differences were observed about mean duration of the procedure (231±60 vs 233±58 min, P=0.7) and fluoroscopy time (13±10 vs 13±8 min, P=0.6) between groups. Cumulative radiation dose resulted significantly higher in the CT-Group (8.9±24 vs 4.8±15 mSV, P=0.02). Compared to paroxistical AF, persistent AF patients showed a comparable procedural-ED (6.6±26 vs 6±19, P=0.8) but with an higher CT-ED (1.7±2.9 vs 1.1±1.9, P=0.01).At 1 year, 227/324 (70%) and 119/169 (70%) of the patients who did and did not have pre-procedural imaging were free from AF (P = NS).

Conclusions: Pre-procedural CT does not improve safety and efficacy of AF ablation, increasing significantly the cumulative radiological exposure. Considering that patients candidate to AF ablation are often young, the cumulative radiation dose per life span and radiation dose reduction strategies should remain a matter of concern for doctors.

Figure 1

Get your access to resources

Join now
  • 1ESC Professional Members – access all ESC Congress resources 
  • 2ESC Association Members (Ivory, Silver, Gold) – access your Association’s resources
  • 3Under 40 or in training - with a Combined Membership, access all resources
Join now
logo esc

Our mission: To reduce the burden of cardiovascular disease

Who we are