• Rotational atherectomy (RA) and orbital atherectomy (OA) are both effective in ablating calcified lesions in preparation for coronary stenting. It remains unclear, which is superior.
• This meta-analysis of eight non-randomized studies comparing OA and RA finds that RA causes fewer dissections and perforations but OA is associated with fewer myocardial infarctions, mortalities, and target vessel revascularizations.
• Limitations of this meta-analysis prevent any firm conclusions about which are superior. Experience with one device or the other may be more important than which is chosen.

中文翻译：

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仍在咆哮的恐龙

• 旋转斑块切除术 (RA) 和眼眶斑块切除术 (OA) 均能有效消融钙化病变，为冠状动脉支架置入术做准备。目前还不清楚，哪个更好。
• 这项对八项比较 OA 和 RA 的非随机研究的荟萃分析发现，RA 导致的夹层和穿孔较少，但 OA 与较少的心肌梗死、死亡率和靶血管血运重建相关。
• 这项荟萃分析的局限性阻止了任何关于哪个更好的确切结论。使用一种设备或另一种设备的经验可能比选择哪种设备更重要。