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Left atrial appendage morphology and silent cerebral ischemia in patients with atrial fibrillation
- Source :
- Heart Rhythm. 11:2-7
- Publication Year :
- 2014
- Publisher :
- Elsevier BV, 2014.
-
Abstract
- Background Left atrial appendage (LAA) is the major source of cardiac thrombi in atrial fibrillation (AF) and plays a major role in cardioembolic events. Objective To investigate the correlation between LAA morphology and the burden of silent cerebral ischemia (SCI) as a new thromboembolic risk marker in patients with AF. Methods A total of 348 patients with AF undergoing transcatheter ablation were enrolled. A cerebral magnetic resonance (MR) was performed to assess SCI burden, while LAA morphology was studied by MR or computed tomography and categorized as follows: cactus in 52 (14.9%) patients, chicken wing in 177 (50.9%), wind sock in 101 (29.0%), and cauliflower in 18 (5.2%). Results SCIs were detected in 295 (84.8%) patients, with a median number of lesions of 23. SCI burden was related to LAA complexity: 30.8% and 17.3% patients with cactus, 30.5% and 22.0% with chicken wing, 13.9% and 27.7% with wind sock, and 16.7% and 38.9% with cauliflower LAA morphologies were in the first and fourth quartiles of number of SCI per patient, respectively ( P = .035). After adjustment for potential confounders, only age (β 0.12; 95% CI 0.08–0.16; P P = .021), wind sock (β 0.38; 95% CI 0.12–0.65; P = .005), and cauliflower (β 0.61; 95% CI 0.07–1.14; P = .026) LAA morphologies were significantly related to SCI burden. Conclusion LAA morphology relates to the burden of SCI in AF patients. Future research should corroborate if accessible methods (eg, echocardiography) are able to describe LAA morphology, permitting its use within universal thromboembolic risk predictors in AF patients.
- Subjects :
- Male
medicine.medical_specialty
Ischemia
Magnetic Resonance Imaging, Cine
Computed tomography
Brain Ischemia
Predictive Value of Tests
Risk Factors
Left atrial
Physiology (medical)
Internal medicine
Atrial Fibrillation
medicine
Humans
Atrial Appendage
In patient
Retrospective Studies
medicine.diagnostic_test
business.industry
Brain
Magnetic resonance imaging
Atrial fibrillation
Middle Aged
medicine.disease
Magnetic Resonance Imaging
Thromboembolic risk
Intracranial Embolism
Transcatheter ablation
Catheter Ablation
Cardiology
Female
Tomography, X-Ray Computed
Cardiology and Cardiovascular Medicine
business
Follow-Up Studies
Subjects
Details
- ISSN :
- 15475271
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- Heart Rhythm
- Accession number :
- edsair.doi.dedup.....e1f28dace6d926dc282cb90f7cb94459