الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Long coronary artery lesions represented a substantial proportion of PCI procedures, especially in patients with comorbidities such as diabetes, smoking, or CKD where diffuse disease is often evident. Due to inadequate stent length or difficult crossability and deliverability of longer stents, up to 30% of PCI operations may necessitate the use of several overlapping stent. There are many different studies that evaluate IVI -guided PCI compared with angiography- guided PCI especially patients presented with complex CAD which include long lesions. It was shown that IVI guided PCI decreased significantly the target lesion failure and cardiac death.
However, there are little comparative studies on the use of very long stents or overlapping stents in these long lesions especially angiographic follow up guided by IVUS in this 2 groups.
550 patients who underwent PCI with significantly long lesions (≥40 mm) at 2 tertiary-care hospitals were recruited for this study between January 2020 and May 2021.IVUS was performed only for 50 patients at the index procedure for patients recruited from march 2021 to May 2021. Patient clinical characteristics, angiographic characteristics and procedural aspects were described including pre-procedural preparation, PCI procedure details, materials used, intra-procedure complications were also documented. Patients were put under observation to detect the occurrence of any in-hospital MACCE or other hemodynamic complications. All the patients were followed for 2 years after the procedure by interviewing with the patients via telephone or the responsible physician to determine the clinical outcomes of the procedure. Angiographic and IVUS follow up done to 50 patients only to search for neointimal proliferation or in-stent restenosis (ISR).