**3. Results**

64 Echocardiography – In Specific Diseases

Chamber diameters and usual measurements were performed according to recommendations of American Society of Echocardiography. Ejection fraction of LV (LVEF)

assigning a value of 1 for normal LV wall motion, 2 for hypokinesis and 3 for akinesis. Using the same values of wall motion scores, LAD 9 segmental score index was calculated as:

In order to obtain LAD flows, the color Doppler Nyquist limit was set at 17 cm/sec. From low parasternal short axis view, search for diastolic color flow in the anterior interventricular groove followed by clockwise rotation was performed, while form apical foreshortened two chamber views LAD diastolic flow was located in the interventricular

Parameters of LAD velocity patterns were averaged from 3 beats, all in sinus rhythm. Diastolic LAD deceleration Time (DDT) was measured as the time from peak diastolic velocity to the intercept of tangent of the velocity envelope with baseline. Pressure half time (P1/2T) (msec) was determined as the time for peak diastolic velocity to decrease to 1

its initial value. In addition, search for LAD early systolic flow reversal with early systolic

Diameter of the jet of blood velocity through the LAD (D), heart rate (HR) and diastolic time velocity integral (TVIDiastole) of the pulsed-wave Doppler were used to calculate blood flow

Coronary angiograms were reviewed by two experienced interventional cardiologists. TIMI (thrombolysis in myocardial infarction) and MBG (myocardial blush grade) were evaluated pre and post- PCI. TIMI-0: no antigrade flow beyond the occlusion; TIMI-1: contrast passes through the occlusion but do not opacify the distality entirely; TIMI-2: contrast passes through the obstruction and opacify the distal coronary bed slower than normal or clears slower than normal; TIMI-3: prompt contrast opacification and clearance of the distal coronary bed (Chesebro et al, 1987). MBG was evaluated as: MBG-0: minimal or no

*<sup>D</sup> Diastolic LAD Flow HR TVI* 

2 4

*Daistole* (3)

groove and the counterclockwise rotation of the transducer was performed.

16 16

> 9 9

*score of segments LV WMSI* (1)

*score of segments LAD WMSI* (2)

<sup>2</sup> of

**2.3 Echocardiographic measurements** 

was measured from biplane apical views.

For the calculation of wall motion score index

**2.4 Velocity of the LAD and measurements** 

negative velocity (ESFR) was performed.

in the LAD according to the following formula (3):

**2.5 LAD Flow measurements** 

**2.6 Angiographic analysis** 
