Repository logo
 
Publication

Left Atrial Appendage Volume As a New Predictor of Atrial Fibrillation Recurrence After Catheter Ablation

2017-08Journal article Open access
Simple item page
dc.contributor.authorTeixeira, P
dc.contributor.authorOliveira, MM
dc.contributor.authorRamos, R
dc.contributor.authorRio, P
dc.contributor.authorCunha, PS
dc.contributor.authorDelgado, AS
dc.contributor.authorPimenta, R
dc.contributor.authorCruz Ferreira, R
dc.date.accessioned2018-01-31T15:40:01Z
dc.date.available2018-01-31T15:40:01Z
dc.date.issued2017-08
dc.description.abstractPURPOSE: Recurrence of atrial fibrillation (AF) after catheter ablation is common, being clinically relevant to identify predictors of recurrence. The left atrial appendage (LAA) role as an AF trigger is scarcely explored. Our aim was to identify if LAA volume is an independent predictor of AF recurrence after catheter ablation. METHODS: We analysed 52 patients (aged 54 ± 10 years, 58% male) with paroxysmal and persistent AF who underwent a first AF catheter ablation and had performed contrast-enhanced cardiac computed tomography (CT) prior to the procedure. RESULTS: The mean left atrial and LAA volumes measured by cardiac CT were 98.9 ± 31.8 and 9.3 ± 3.5 mL, respectively. All patients received successful pulmonary vein isolation and were followed up for 24 months. AF recurrence occurred in 17 patients (33%). LAA volume was significantly greater in patients with AF recurrence than in those without recurrence (11.3 ± 2.9 vs. 8.2 ± 3.4 mL; p = 0.002). Multivariable analysis using Cox regression revealed that LAA volume (hazard ratio 1.32; 95% confidence interval 1.12-1.55; p = 0.001) and persistent AF (hazard ratio 4.22; 95% confidence interval 1.48-12.07; p = 0.007) were independent predictors for AF recurrence. An LAA volume greater than 8.825 mL predicted AF recurrence with 94% sensitivity and 66% specificity. The Kaplan-Meier analysis showed a lower rate free from AF recurrence in the group with an LAA volume >8.825 mL (p < 0.001). CONCLUSIONS: Larger LAA volume was associated with AF recurrence after catheter ablation in patients with paroxysmal and persistent AF.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationJ Interv Card Electrophysiol. 2017 Aug;49(2):165-171pt_PT
dc.identifier.doi10.1007/s10840-017-0256-4pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.17/2873
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringer Verlagpt_PT
dc.subjectHSM CARpt_PT
dc.subjectAtrial Appendage/diagnostic imagingpt_PT
dc.subjectAtrial Appendage/physiopathologypt_PT
dc.subjectAtrial Appendage/surgerypt_PT
dc.subjectAtrial Fibrillation/diagnostic imagingpt_PT
dc.subjectAtrial Fibrillation/physiopathology
dc.subjectAtrial Fibrillation/surgery
dc.subjectCatheter Ablation/methods
dc.subjectContrast Media
dc.subjectEchocardiography
dc.subjectImaging, Three-Dimensional
dc.subjectPulmonary Veins/diagnostic imaging
dc.subjectPulmonary Veins/surgery
dc.subjectRadio Waves
dc.subjectRecurrence
dc.subjectRisk Factors
dc.subjectSensitivity and Specificity
dc.subjectTomography, X-Ray Computed
dc.subjectTreatment Outcome
dc.titleLeft Atrial Appendage Volume As a New Predictor of Atrial Fibrillation Recurrence After Catheter Ablationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage171pt_PT
oaire.citation.issue2pt_PT
oaire.citation.startPage165pt_PT
oaire.citation.titleJournal of Interventional Cardiac Electrophysiologypt_PT
oaire.citation.volume49pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
J Interv Card Electrop 2017.pdf
Size:
2.75 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

CAR - Artigos