LAUSR

Dear Editor: Bioresorbable vascular scaffolds (BVS) implantation in tortuous coronary artery is a substantial challenge and this issue remains inconclusive due to limited supporting data from clinical trials. We have read the clinical research article by Lee et al. with great interest, wherein the authors have described percutaneous coronary intervention for tortuous left anterior descending artery with bioresorbable vascular scaffold via the transradial approach. We agree with the authors about the assistance of Guideliner catheters which provides extreme support for successful achievement and deployment of BVS in tortuous vessel. 1 However, we would like to discuss about the use of intracoronary imaging for optimization of coronary intervention. According to the consensus document, intravascular ultrasound (IVUS) and optical coherence tomography (OCT) are indicated for optimization and guidance of coronary stent implantation, especially in patients with BVS implantation and left main disease. 2 Intracoronary imaging as compared to angiographic imaging can provide more important information about stent abnormalities involving the vessel wall, such as underexpansion, strut malapposition and stent edge dissection etc. 3,4