However, myocardial ischemia caused by balloon dilation during the operation has raised great concern. 然而，冠状动脉成形术时球囊扩张诱导的心肌缺血引起了人们的关注。
Methods Balloon dilatation was performed under local anesthesia via flexible bronchoscope in a patient with tracheobronchial stenosis. 方法对支气管狭窄患者的局部治疗实施了球囊扩张术。
