Abstract
Percutaneous coronary intervention (PCI) for heavily calcified lesions is challenging because these lesions are resistant to balloon dilatation and stenting. Lacrosse non-slip element (NSE) may have the potential to dilate heavily calcified lesions. We aimed to investigate predictors of successful lesion modification using Lacrosse NSE angioplasty via optical coherence tomography (OCT)-guided PCI. We investigated 32 patients with severe target lesion calcification treated with OCT-guided PCI. Successful lesion modification was defined as the complete fracture of calcification after Lacrosse NSE angioplasty. Before PCI, 172 segments with calcification were identified. After pre-dilatation using Lacrosse NSE, successful lesion modification was achieved in 117 segments (68.0%). Calcification was significantly thinner in successfully disrupted segments than in non-disrupted segments (p < 0.001). Calcification angle tended to be larger in disrupted than in non-disrupted segments (p = 0.08). Convex types were less frequently observed in disrupted than in non-disrupted segments (p < 0.001). At minimal lumen area sites, 26 segments (81.3%) were successfully modified. Similar to the overall results, the disrupted group had significantly thinner calcification than the non-disrupted group (p < 0.001). The angle of the calcified plaque was similar between the 2 groups (p = 0.39). Convex-type calcifications were less frequently observed in the disrupted group than in the non-disrupted group (p = 0.05). Receiver-operating characteristic curve analysis showed that calcification thickness < 565 μm was the best predictor of completely disrupted calcification. The thickness and shape of calcifications were predictors of successful lesion modification after Lacrosse NSE angioplasty.
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Sugawara, Y., Ueda, T., Soeda, T. et al. Plaque modification of severely calcified coronary lesions by scoring balloon angioplasty using Lacrosse non-slip element: insights from an optical coherence tomography evaluation. Cardiovasc Interv and Ther 34, 242–248 (2019). https://doi.org/10.1007/s12928-018-0553-6
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DOI: https://doi.org/10.1007/s12928-018-0553-6