ABSTRACT
Bioresorbable vascular scaffolds (BRSs) have been developed as an attractive alternative to metallic stents. This chapter shows the bench behavior of ABSORB when submitted to postdilation with oversized balloon catheters. Angiography remains the most frequently used method for vessel sizing and device selection, even with the current BRSs generation and its intrinsic expansion limitations. Careful lesion scrutiny and understanding of some "tips and tricks" might be the key for the acute success with these revolutionary devices in the daily practice. In particular, operators have to be very careful when sizing the vessels to avoid either scaffold underexpansion or the risk of fracture when trying to fix it. Especially in the beginning of the experience with BRSs, some "extra time" should be spent on proper quantitative coronary angiography (QCA) assessment. The chapter also shows examples of the differences in vessel diameter as assessed by Dmax and interpolated Reference vessel diameter (RVD).
