الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Summary Complex percutaneous coronary interventions (PCIs) are being increasingly performed nowadays due to the incremental advances in techniques and industry of interventional cardiology. This has been translated into a significant favorable impact on patients with extensive coronary artery disease (CAD) and multiple comorbidities with regard to symptomatic relief as well as reduction of mortality. To cope with these increasing technically demanding and challenging procedures, cardiologists must develop a standardized way to approach complex PCI as angiographic guidance alone bears many limitations and yields suboptimal results. Considering the growing body of evidence, the use of IVUS is crucial in all cases of complex PCI. The aim of this study was to emphasize the optimal morphologic criteria that should be evaluated by intravascular ultrasound (IVUS) both before and after stenting for guidance of periprocedural planning and optimization and to follow up the clinical outcomes in IVUS- guided percutaneous coronary intervention (PCI) of complex lesions. The present study was conducted on 56 consecutive patients who underwent IVUS guided successful PCI for complex coronary lesions, IVUS was done before the procedure to assess lesions, guide the stent sizing and positioning as well as after the procedure to assess and optimize final stent results. All patients were subjected to careful history taking, complete clinical examination, 12-lead ECG and laboratory, transthoracic