الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Revascularization of proximal LAD narrowings is a debatable issue. To confirm safety and efficacy of PCI to proximal LAD lesions, clinical assessment of patients’ morbidity and mortality should be concerned. Restoring blood flow to a stenotic coronary segment may improve myocardial function, echocardiographic strain imaging or deformation imaging by digital speckle tracking analysis has provided a better objective quantification of myocardial function and sensitive detection of subclinical impact of both ischemia and revascularization on global and regional myocardial function. A total of 53 patients admitted to Mansoura University Specialized Internal Medicine Hospital between December 2017 and November 2018 for elective proximal left anterior descending coronary artery stenting (solely or combined with other coronary arterial lesions) were enrolled for a prospective, non-randomized study. Two dimensional/Doppler echocardiograohy, and speckle tracking echocardiography were done to study cases before and one month after PCI to proximal LAD. Clinical follow-up was done one year after PCI. Left ventricular function assessment parameters (including EF, GLS and mean LAD territorial strain) were calculated for all cases before and after PCI, LV function recovery using GLS and regional LAD mean strain were defined as ≥ 10% improvement from the original value.