J Interv Card Electrophysiol (2015) 44:47–54 DOI 10.1007/s10840-015-0028-y
Pulmonary vein stenosis after pulmonary vein isolation using duty-cycled unipolar/bipolar radiofrequency ablation guided by intracardiac echocardiography Stefan Asbach 1 & Fabienne Schluermann 1 & Luca Trolese 1 & Mathias Langer 2 & Christoph Bode 1 & Tobias Krauss 2
Received: 27 March 2015 / Accepted: 4 June 2015 / Published online: 17 June 2015 # Springer Science+Business Media New York 2015
Abstract Purpose Concerning rates of pulmonary vein (PV) stenosis were reported following PV isolation (PVI) with a circular pulmonary vein ablation catheter (PVAC). As this may depend on intraprocedural imaging, we evaluated the incidence of PV stenosis in patients undergoing PVAC-PVI with continuous surveillance by intracardiac echocardiography (ICE). Methods Multi-slice computed tomography was performed before and 3 months after PVAC-PVI with continuous ICE surveillance in 30 patients (37 % male, 65±9 years). PV areas at two levels (ostial and 1 cm distally) and left atrial (LA) volumes were measured. PV area/LA volume ratio was calculated to correct for reverse LA remodelling. PV stenosis was classified as mild (25–50 %), moderate (50–75 %) and severe (>75 %). Results One hundred sixteen veins were isolated with PVAC with additional touch-up ablation in one patient. One patient was excluded from analysis for untriggered CT acquisition. Left atrial volume decreased from 109.1±30.9 cm3 before to 98.4±34.4 cm3 after ablation (p
Pulmonary vein stenosis after pulmonary vein isolation using duty-cycled unipolar/bipolar radiofrequency ablation guided by intracardiac echocardiography Stefan Asbach 1 & Fabienne Schluermann 1 & Luca Trolese 1 & Mathias Langer 2 & Christoph Bode 1 & Tobias Krauss 2
Received: 27 March 2015 / Accepted: 4 June 2015 / Published online: 17 June 2015 # Springer Science+Business Media New York 2015
Abstract Purpose Concerning rates of pulmonary vein (PV) stenosis were reported following PV isolation (PVI) with a circular pulmonary vein ablation catheter (PVAC). As this may depend on intraprocedural imaging, we evaluated the incidence of PV stenosis in patients undergoing PVAC-PVI with continuous surveillance by intracardiac echocardiography (ICE). Methods Multi-slice computed tomography was performed before and 3 months after PVAC-PVI with continuous ICE surveillance in 30 patients (37 % male, 65±9 years). PV areas at two levels (ostial and 1 cm distally) and left atrial (LA) volumes were measured. PV area/LA volume ratio was calculated to correct for reverse LA remodelling. PV stenosis was classified as mild (25–50 %), moderate (50–75 %) and severe (>75 %). Results One hundred sixteen veins were isolated with PVAC with additional touch-up ablation in one patient. One patient was excluded from analysis for untriggered CT acquisition. Left atrial volume decreased from 109.1±30.9 cm3 before to 98.4±34.4 cm3 after ablation (p
