intractable angina pectoris

例句：

1. 1. The patient's condition was so severe that he needed immediate medical attention.
   病人的状况非常严重，需要立即医疗照顾。
2. 2.Despite the best efforts of the doctors, the patient's condition did not improve.
   尽管医生们尽了最大努力，但病人的状况仍未见好转。
3. 3.The diagnosis of intractable angina pectoris requires a multidisciplinary approach to manage the patient's symptoms effectively.
   顽固性心绞痛的诊断需要采取多学科的方法来有效管理患者的症状。