الفهرس 
Aim of the workOnly 14 pages are availabe for public view
 |  | from | 164 |  |  |
| | | from | 164 | | |
Abstract
Improving the myocardial perfusion and left ventricular (LV) systolic function are among the objectives of a successful percutaneous coronary intervention (PCI) (Sung et al., 2018).
Despite studies evaluating various clinical risk factors and routine echocardiographic parameters predisposing to left ventricular recovery after PCI, there are still gaps about factors related to PCI procedure itself (Ponikowski et al., 2016).
Speckle tracking echocardiography (STE) is relatively new echocardiographic method for evaluating both global and regional strain. Evaluation of systolic function of the myocardium has mainly depended on detection of global function or the local myocardial contraction force. New approaches have been developed to investigate local myocardial conduction and systolic function, such as Doppler tissue imaging, strain rate imaging, and especially TSI.
So, this study aimed to determine factors affecting LV recovery after elective PCI to LAD using speckle tracking Echo and Tissue synchronization imaging.
150 patients of both sex with elective LAD stenting were enrolled in this study, their age ranged from 28 to 81 years old. They were divided into 2 groups:
group (1): Patients who had not reached normal parameters after 3 months follow up.
group (2): Patients who had reached normal parameters after 3 months follow up.
After 3 months follow up 97 patients (64.7%) did not reach normal speckle tracking value (group 1) while 53 patients (35.3%) had reached normal value (group 2).
After 3 months follow up 78 patients (59.3%) did not reach normal TSI value (group 1) while 61 patients (40.7%) had reached normal value (group 2).
Patient age, sex, risk factors as DM, HTN, dyslipidemia, positive family history and stent diameter doesn`t seem to be a good predictor to LV recovery to normal values after elective PCI to LAD.
Stent length is a good predictor to LV recovery to normal values after elective PCI to LAD as Multivariate logistic regression analysis was done and revealed that decrease one mm in length of stent gives about 10% risk reduction of abnormal speckle tracking echo after 3 months and gives about 13% risk reduction of abnormal TSI after 3 months.
Number of stents implanted is a good predictor of LV recovery to normal values after elective PCI to LAD as patients who had one stent implanted had a bigger chance to return to normal values unlike patients who had two stents implanted.