title: Comparison of tissue Doppler dynamics to Doppler flow in evaluating left atrial appendage function by transesophageal echocardiography.
abstract: Tissue Doppler imaging (TDI) patterns from the left atrial appendage (LAA) were evaluated by transesophageal echocardiography. Reproducible, characteristic triphasic or biphasic tissue velocities similar to Doppler flow of the LAA were obtained. Patient peak TDI velocities correlated well with flow and were measurable in atrial fibrillation. Patients with an embolic cerebrovascular accident and in sinus rhythm had higher tissue TDI velocities from the LAA compared with patients without an event, and the groups had similar flow velocities. Hence, Doppler tissue contraction dynamics determined by TDI may complement flow velocities in evaluating LAA function for risk assessment of thromboembolism.
authors.affiliation: Krannert Institute of Cardiology, Indiana University, Indianapolis 46202, USA.
authors.forename: Lakshmi
authors.initials: L
authors.lastname: Parvathaneni
authors.forename: Jo
authors.initials: J
authors.lastname: Mahenthiran
authors.forename: Sony
authors.initials: S
authors.lastname: Jacob
authors.forename: Judy
authors.initials: J
authors.lastname: Foltz
authors.forename: William J
authors.initials: WJ
authors.lastname: Gill
authors.forename: Waqas
authors.initials: W
authors.lastname: Ghumman
authors.forename: Irmina
authors.initials: I
authors.lastname: Gradus-Pizlo
authors.forename: Harvey
authors.initials: H
authors.lastname: Feigenbaum
authors.forename: Stephen G
authors.initials: SG
authors.lastname: Sawada
mesh_terms: D000328:Adult; D000368:Aged; D020517:Atrial Appendage / Q000000981:diagnostic imaging* / Q000473:pathology*; D001281:Atrial Fibrillation; D015150:Echocardiography, Doppler / Q000379:methods*; D017548:Echocardiography, Transesophageal / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012039:Regional Blood Flow; D018570:Risk Assessment; D020521:Stroke; D013923:Thromboembolism / Q000150:complications / Q000000981:diagnostic imaging*