Impella-assisted intracoronary lithotripsy of heavily calcified left main lesion in a patient with severely impaired ejection fraction and the last remaining patent vessel

对一名射血分数严重受损且仅剩最后一条通畅血管的患者，采用 Impella 辅助冠状动脉内碎石术治疗左主干严重钙化病变。