Optimized strategy of rotational atherectomy of underexpanded coronary stents in patients with acute coronary syndrome

Kun Cui, You-quan Shi, Yuan-zheng Zhang, Zheng-gong Li, Chang-ling Li

Figure 1. An ACS case performed with the first-run IVUS examination. A: MLD 1.8-1.9 mm indicated by IVUS; B: after the first SA with a 1.5-mm burr the MLD became significantly larger, but there was still significant calcification and a partial stent; C: an underexpanded stent with significant stenosis; D and E: after the second SA with a 2.0-mm burr, the lesion was treated with scoring balloon expansion and implantation of the stent; ACS: acute coronary syndrome; IVUS: intravascular ultrasound; MLD: minimum lumen diameter; SA: stent ablation.