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Intravascular ultrasound (IVUS) is valuable in assessing the pathology of vascular lesions, and for complex coronary lesions, IVUS may contribute to better procedural and clinical outcomes. However, for lesions treated with drug-eluting stents (DES), randomized data demonstrating the clinical usefulness of IVUS are limited. In a Korean multicenter nonblinded trial supported by the DES manufacturer, 1400 patients with long coronary lesions (mean age, 64; 31% women) were randomized to conventional angiography-guided or IVUS-guided stent implantation (mean stented length, 39.3 mm).
During the procedure, use of adjunct poststent balloon dilation was more common in the IVUS group than in the angiography group (76% vs. 57%; P<0.001), resulting in …