Author/Authors :
Parvathaneni، نويسنده , , Lakshmi and Mahenthiran، نويسنده , , Jo and Jacob، نويسنده , , Sony and Foltz، نويسنده , , Judy and Gill، نويسنده , , William J. and Ghumman، نويسنده , , Waqas and Gradus-Pizlo، نويسنده , , Irmina and Feigenbaum، نويسنده , , Harvey and Sawada، نويسنده , , Stephen G.، نويسنده ,
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.
