1. Pulmonary vein stenosis after pulmonary vein isolation using duty-cycled unipolar/bipolar radiofrequency ablation guided by intracardiac echocardiography
- Author
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Mathias Langer, Fabienne Schluermann, Stefan Asbach, Luca Trolese, Tobias Krauss, and Christoph Bode
- Subjects
Male ,medicine.medical_specialty ,Intracardiac echocardiography ,medicine.medical_treatment ,Contrast Media ,Comorbidity ,Asymptomatic ,Pulmonary vein ,Electrocardiography ,Imaging, Three-Dimensional ,Postoperative Complications ,Risk Factors ,Physiology (medical) ,Internal medicine ,Atrial Fibrillation ,medicine ,Humans ,Pulmonary vein stenosis ,Ultrasonography, Interventional ,Aged ,business.industry ,Atrial fibrillation ,Ablation ,medicine.disease ,Iopamidol ,Catheter ,Stenosis ,Treatment Outcome ,Echocardiography ,Pulmonary Veins ,Catheter Ablation ,Cardiology ,Pulmonary Veno-Occlusive Disease ,Female ,medicine.symptom ,Tomography, X-Ray Computed ,Cardiology and Cardiovascular Medicine ,business - Abstract
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). 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 %). 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
- Published
- 2015
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