Accessory left atrial diverticulae: contractile properties depicted with 64-slice cine-cardiac CT.

Hdl Handle:
http://hdl.handle.net/10147/207689
Title:
Accessory left atrial diverticulae: contractile properties depicted with 64-slice cine-cardiac CT.
Authors:
Killeen, Ronan P; Ryan, Ronan; MacErlane, Aoife; Martos, Ramon; Keane, David; Dodd, Jonathan D
Affiliation:
Departments of Radiology, St Vincent's University Hospital, Elm Park, Dublin 4,, Ireland.
Citation:
Int J Cardiovasc Imaging. 2010 Feb;26(2):241-8. Epub 2009 Sep 19.
Journal:
The international journal of cardiovascular imaging
Issue Date:
1-Feb-2012
URI:
http://hdl.handle.net/10147/207689
DOI:
10.1007/s10554-009-9511-9
PubMed ID:
19768571
Abstract:
To assess the contractility of accessory left atrial appendages (LAAs) using multiphasic cardiac CT. We retrospectively analyzed the presence, location, size and contractile properties of accessory LAAs using multiphasic cardiac 64-slice CT in 102 consecutive patients (63 males, 39 females, mean age 57). Multiplanar reformats were used to create image planes in axial oblique, sagittal oblique and coronal oblique planes. For all appendages with an orifice diameter >or= 10 mm, axial and sagittal diameters and appendage volumes were recorded in atrial diastole and systole. Regression analysis was performed to assess which imaging appearances best predicted accessory appendage contractility. Twenty-three (23%) patients demonstrated an accessory LAA, all identified along the anterior LA wall. Dimensions for axial oblique (AOD) and sagittal oblique (SOD) diameters and sagittal oblique length (SOL) were 6.3-19, 3.4-20 and 5-21 mm, respectively. All appendages (>or=10 mm) demonstrated significant contraction during atrial systole (greatest diameter reduction was AOD [3.8 mm, 27%]). Significant correlations were noted between AOD-contraction and AOD (R = 0.57, P < 0.05) and SOD-contraction and AOD, SOD and SOL (R = 0.6, P < 0.05). Mean diverticulum volume in atrial diastole was 468.4 +/- 493 mm(3) and in systole was 171.2 +/- 122 mm(3), indicating a mean change in volume of 297.2 +/- 390 mm(3), P < 0.0001. Stepwise multiple regression analysis revealed SOL to be the strongest independent predictor of appendage contractility (R(2) = 0.86, P < 0.0001) followed by SOD (R(2) = 0.91, P < 0.0001). Accessory LAAs show significant contractile properties on cardiac CT. Those accessory LAAs with a large sagittal height or depth should be evaluated for contractile properties, and if present should be examined for ectopic activity during electrophysiological studies.
Language:
eng
MeSH:
Adult; Atrial Appendage/physiopathology/*radiography; Atrial Fibrillation/*etiology/physiopathology/radiography; *Atrial Function, Left; Diastole; Diverticulum/complications/physiopathology/*radiography; Female; Heart Diseases/complications/physiopathology/*radiography; Humans; Male; Middle Aged; *Myocardial Contraction; Predictive Value of Tests; Regression Analysis; Retrospective Studies; Systole; *Tomography, X-Ray Computed
ISSN:
1875-8312 (Electronic); 1569-5794 (Linking)

Full metadata record

DC FieldValue Language
dc.contributor.authorKilleen, Ronan Pen_GB
dc.contributor.authorRyan, Ronanen_GB
dc.contributor.authorMacErlane, Aoifeen_GB
dc.contributor.authorMartos, Ramonen_GB
dc.contributor.authorKeane, Daviden_GB
dc.contributor.authorDodd, Jonathan Den_GB
dc.date.accessioned2012-02-01T10:35:00Z-
dc.date.available2012-02-01T10:35:00Z-
dc.date.issued2012-02-01T10:35:00Z-
dc.identifier.citationInt J Cardiovasc Imaging. 2010 Feb;26(2):241-8. Epub 2009 Sep 19.en_GB
dc.identifier.issn1875-8312 (Electronic)en_GB
dc.identifier.issn1569-5794 (Linking)en_GB
dc.identifier.pmid19768571en_GB
dc.identifier.doi10.1007/s10554-009-9511-9en_GB
dc.identifier.urihttp://hdl.handle.net/10147/207689-
dc.description.abstractTo assess the contractility of accessory left atrial appendages (LAAs) using multiphasic cardiac CT. We retrospectively analyzed the presence, location, size and contractile properties of accessory LAAs using multiphasic cardiac 64-slice CT in 102 consecutive patients (63 males, 39 females, mean age 57). Multiplanar reformats were used to create image planes in axial oblique, sagittal oblique and coronal oblique planes. For all appendages with an orifice diameter >or= 10 mm, axial and sagittal diameters and appendage volumes were recorded in atrial diastole and systole. Regression analysis was performed to assess which imaging appearances best predicted accessory appendage contractility. Twenty-three (23%) patients demonstrated an accessory LAA, all identified along the anterior LA wall. Dimensions for axial oblique (AOD) and sagittal oblique (SOD) diameters and sagittal oblique length (SOL) were 6.3-19, 3.4-20 and 5-21 mm, respectively. All appendages (>or=10 mm) demonstrated significant contraction during atrial systole (greatest diameter reduction was AOD [3.8 mm, 27%]). Significant correlations were noted between AOD-contraction and AOD (R = 0.57, P < 0.05) and SOD-contraction and AOD, SOD and SOL (R = 0.6, P < 0.05). Mean diverticulum volume in atrial diastole was 468.4 +/- 493 mm(3) and in systole was 171.2 +/- 122 mm(3), indicating a mean change in volume of 297.2 +/- 390 mm(3), P < 0.0001. Stepwise multiple regression analysis revealed SOL to be the strongest independent predictor of appendage contractility (R(2) = 0.86, P < 0.0001) followed by SOD (R(2) = 0.91, P < 0.0001). Accessory LAAs show significant contractile properties on cardiac CT. Those accessory LAAs with a large sagittal height or depth should be evaluated for contractile properties, and if present should be examined for ectopic activity during electrophysiological studies.en_GB
dc.language.isoengen_GB
dc.subject.meshAdulten_GB
dc.subject.meshAtrial Appendage/physiopathology/*radiographyen_GB
dc.subject.meshAtrial Fibrillation/*etiology/physiopathology/radiographyen_GB
dc.subject.mesh*Atrial Function, Leften_GB
dc.subject.meshDiastoleen_GB
dc.subject.meshDiverticulum/complications/physiopathology/*radiographyen_GB
dc.subject.meshFemaleen_GB
dc.subject.meshHeart Diseases/complications/physiopathology/*radiographyen_GB
dc.subject.meshHumansen_GB
dc.subject.meshMaleen_GB
dc.subject.meshMiddle Ageden_GB
dc.subject.mesh*Myocardial Contractionen_GB
dc.subject.meshPredictive Value of Testsen_GB
dc.subject.meshRegression Analysisen_GB
dc.subject.meshRetrospective Studiesen_GB
dc.subject.meshSystoleen_GB
dc.subject.mesh*Tomography, X-Ray Computeden_GB
dc.titleAccessory left atrial diverticulae: contractile properties depicted with 64-slice cine-cardiac CT.en_GB
dc.contributor.departmentDepartments of Radiology, St Vincent's University Hospital, Elm Park, Dublin 4,, Ireland.en_GB
dc.identifier.journalThe international journal of cardiovascular imagingen_GB
dc.description.provinceLeinster-

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