Comparison of tissue Doppler dynamics to Doppler flow in evaluating left atrial appendage function by transesophageal echocardiography.
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.
Parvathaneni
Lakshmi
L
Krannert Institute of Cardiology, Indiana University, Indianapolis 46202, USA.
Mahenthiran
Jo
J
Jacob
Sony
S
Foltz
Judy
J
Gill
William J
WJ
Ghumman
Waqas
W
Gradus-Pizlo
Irmina
I
Feigenbaum
Harvey
H
Sawada
Stephen G
SG
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*