stenosis of coronary orifice

例句：

1. 1. The patient had a narrowing of the coronary artery.
   这名患者有冠状动脉狭窄。
2. 2. The diagnosis of stenosis is confirmed by angiography.
   经血管造影诊断出狭窄。
3. 3.The heart surgeon performed a stent placement to relieve the stenosis.
   心脏外科医生进行了支架植入以缓解狭窄。