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Assessment of left atrial shape and volume in structural remodeling secondary to atrial fibrillation.

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Floria, Mariana Blommaert, Dominique [UCL] Lacrosse, Marc [UCL] Ambarus, Valentin DORMAL, Fabien [UCL] Jamart, Jacques [UCL] De Roy, Lucas [UCL]

PURPOSE: Assessment of volume in relation with left atrial (LA) shape alteration before and after PV isolation. METHODS: We compared trapezoidal modification of LA using echocardiography with the ellipsoid formula (EEL: ) and CT, with both ellipsoid (CTEL: ) and truncated cone formulas (CTTR: ), in 40 patients, before and +/-3 months after AF ablation. RESULTS: A trapezoidal shape was present in 76.3% of patients. The different volume measurements were statistically correlated (r = 0.603-0.837, p < 0.001) irrespective of the formula used. After reverse remodeling, with 77.5% of patients in stable sinus rhythm, correlation coefficient for volume remained significant (p < 0.001). CONCLUSIONS: In AF, dilation of the LA is associated with a geometrical trapezoidal change in many cases. The CT truncated cone formula applies best for precise evaluation of trapezoidal shape alteration in dilated AF atria. There is a good correlation between CTTR: and echocardiography which remains a valuable estimation for volume calculation in clinical practice.

Document type Article de périodique (Journal article) – Clinical Trial, Journal Article
Access type Accès restreint
Publication date 2009
Journal information "Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing" - Vol. 25, no. 3, p. 167-70 (2009)
Peer reviewed yes
issn 1383-875X
e-issn 1572-8595
Publication status Publié
Affiliations UCL - MD/MINT - Département de médecine interne
UCL - (MGD) Service de cardiologie
UCL - (MGD) Service de radiologie - résonance magnétique
UCL - (MGD) Unité de support scientifique
MESH Subject Atrial Fibrillation - surgery - ultrasonography ; Echocardiography - methods ; Female ; Heart Atria - surgery - ultrasonography ; Humans ; Image Interpretation, Computer-Assisted - methods ; Imaging, Three-Dimensional - methods ; Male ; Middle Aged
Links
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Bibliographic reference Floria, Mariana ; Blommaert, Dominique ; Lacrosse, Marc ; Ambarus, Valentin ; DORMAL, Fabien ; et. al. Assessment of left atrial shape and volume in structural remodeling secondary to atrial fibrillation.. In: Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing, Vol. 25, no. 3, p. 167-70 (2009)
Permanent URL http://hdl.handle.net/2078.1/24931