TISSUE DOPPLER VELOCITY IMAGING OF LEFT ATRIAL APPENDAGE FUNCTION IN PATIENTS WITH MITRAL STENOSIS

Volume : VII, Issue : VII, July - 2018

Rajasekhar Ramesh . D, Elangovan. C, D. Prathap Kumar Gorijavaram, Swaminathan. N, Gnanavelu. G, Ravishankar G

AIM OF THE STUDY

The most widely accepted method for assessing the left atrial appendage (LAA) function is the measurement of left atrial

appendage late peak emptying velocity (LAAEV) by using pulse wave Doppler (PWD) on Transesophageal echocardiography (TEE)

and reduced left atrial appendage late peak emptying velocity represents left atrial appendage dysfunction. The magnitude and

pattern of left atrial appendage flow velocities are dependent on acute changes in loading conditions. Left atrial appendage flow

velocities may also be affected by left atrial appendage size and morphology which are highly variable.

Myocardial velocities obtained by Tissue Doppler imaging (TDI) are less dependent on preload and left atrial appendage (LAA)

tissue velocities may help in more accurate risk prediction. The aim of the study is to

(1) To asses Left Atrial appendage late peak Emptying Velocty (LAAEV) and Left Atrial appendage late peak Filling flow Velocty

(LAAFV) by using Pulse Doppler imaging in Trans esophageal echocardiography (TEE)

(2) To asses Left Atrial appendage late peak Systolic tissue velocity (LSV) and Left Atrial appendage late peak Diastolic Velocty

(LDV) by using Tissue Doppler imaging in Trans esophageal echocardiography (TEE)

(3) To correlate left atrial Spontaneous Echo Contrast (SEC) and thrombus with Left Atrial appendage late peak Systolic tissue

velocity (LSV) and Left Atrial appendage late peak Emptying Velocty (LAAEV)