Improved crossability with novel cutting balloon versus scoring balloon in the treatment of calcified lesion.

Cutting balloons and scoring balloons are commonly used for the preparation of calcified lesion. However, problems with crossability occasionally limit the use of cutting balloons. We prospectively selected 173 calcified lesions treated using a novel cutting balloon (Wolverine™, C group). As control, we retrospectively analyzed 146 calcified lesions treated using a scoring balloon (Lacrosse NSE ALPHA™, S group). Either intravascular ultrasound (IVUS) or optical coherence tomography (OCT) was used by the operator's discretion. The primary outcome was delivery success, which was defined as successful passage to the target lesion immediately after IVUS or OCT evaluation. The secondary outcome was acute cross-sectional area (CSA) gain, which was defined as post-interventional minimum stent area minus pre-procedural minimum lumen area. A multivariate analysis evaluated the independent predictors for delivery success. The delivery success rate was significantly higher in the C group versus the S group (90.8% versus 79.5%, P = 0.006). However, the acute CSA gain was similar between the two groups (IVUS: 3.2 ± 1.8 mm2 versus 3.4 ± 1.9 mm2, P = 0.53; OCT: 3.6 ± 1.4 mm2 versus 4.1 ± 1.9 mm2, P = 0.11). Usage of cutting balloon was an independent predictor for delivery success even after the adjustment for the patient and lesion characteristics [odds ratio (OR): 2.72 (95% confidence interval 1.38-5.33), P = 0.004] as well as the procedural characteristics [OR: 2.34 (1.15-4.86), P = 0.018]. Novel cutting balloons demonstrated better crossability and similar acute CSA gain compared with scoring balloons in calcified lesion.