ArticleJournal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing2015
Pulmonary vein stenosis after pulmonary vein isolation using duty-cycled unipolar/bipolar radiofrequency ablation guided by intracardiac echocardiography.
Article in Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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1 citing paper in PubMed, 5 citations in OpenAlex.
- A 5-year clinical follow-up after duty-cycled phased RF ablation of paroxysmal atrial fibrillation.Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing · 2017Article
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeConcerning 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).
methodsMulti-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 %).
resultsOne 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 cm(3) before to 98.4 ± 34.4 cm(3) after ablation (p < 0.05). Overall, PV areas decreased ostially from 209.0 ± 80.3 mm(2) to 171.2 ± 74.6 mm(2) (p < 0.0001) and distally from 155.2 ± 61.5 mm(2) to 141.0 ± 51.3 mm(2) (p < 0.0001). After adjustment for LA volume reduction, PV area significantly reduced only at the ostial level (p = 0.0069). Mild PV stenosis (ostial/distal) was detected in 17/9 PVs (14.7 %/7.8 %) and moderate PV stenosis in 7/0 PVs (6.0 %/0 %). PV stenosis occurred more often in superior PVs (p = 0.0004). No severe PV stenosis occurred. All patients remained asymptomatic.
conclusionsWhile the use of ICE does not fully prevent the occurrence of ostial PV stenosis after PVAC-PVI, no significant narrowing in distal PVs was observed. Superior PVs are prone to PV stenosis after PVAC-PVI.
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