BACKGROUND: Adequate expansion is critical to achieve optimal Bioresorbable Vascular Scaffolds (BVS) apposition to the vessel wall. However, compared to metallic stents, BVS present different mechanical properties. Hence, slow deployment and maintenance of @entity661 for at least 30" is recommended for BVS implantation. However, since no evidences are available demonstrating the superiority of a longer balloon dilatation time, the implantation technique is highly variable among different centers. METHODS: A total of 24 BVS-treated lesions were included in the present analysis. After BVS deployment at 12 atmosphere (ATM) the balloon was rapidly deflated and scaffold expansion was documented with an angiogram. The same balloon was then inflated again and kept at 12 ATM for 30". Finally, a further angiogram was obtained to evaluate BVS expansion. Quantitative coronary angiography (QCA) was performed at each step. RESULTS: A significant increase of @entity5562 ( @entity5562 )-to-reference scaffold diameter (RSD) ratio ( @entity5562 to RSD Ration, MR-Ratio) from 0.70        0.10 after initial stent deployment to 0.79        0.10 after the 30"-long balloon dilation was observed (p   <   0.001). Of note, this result was consistent across all sub-segments, as well as across almost all lesion subgroups. A substantial reduction in the prevalence of @entity850 from 29  % to 17  % was registered after the 30"-long dilation. CONCLUSIONS: Our results strongly support the maintenance of @entity661 for at least 30" during BVS deployment to achieve optimal scaffold expansion and minimize the occurrence of @entity850 .

The duration of XXXX affects the luminal diameter of coronary segments after bioresorbable vascular scaffolds deployment.

@entity850 :: ('MESH:D003251', 'Disease') :: ['residual stenosis'] @entity5562 :: ('MESH:D015875', 'Disease') :: ['MLD', 'minimal luminal diameter'] @entity661 :: ('MESH:D054549', 'Disease') :: ['balloon inflation']
@entity661 :: (MESH:D054549,Disease) :: ['balloon inflation']
