ischaemia

例句：

1. 1.The patient's heart stopped because of a severe ischaemia.
   由于严重的缺血，患者的心脏停止了跳动。
2. 2. The oxygen levels in the lungs were low due to the lack of ischaemia.
   由于缺乏氧气，肺部的氧含量低。
3. 3.The doctors performed an emergency bypass surgery to treat the patient's ischaemic heart disease.
   医生们紧急进行了搭桥手术来治疗患者的缺血性心脏病。