atrial thrombus

例句：

1. 1. Thepatient's condition worsened after the surgery, and a cardiac catheterization was performed to identify the source of the atrial thrombus.
   手术后，患者的病情恶化，进行了心脏导管检查以确定心房血栓的来源。
2. 2. The doctor discovered an atrial thrombus during the patient's routine check-up.
   在患者定期检查时，医生发现了心房血栓。
3. 3. The patient was admitted to the hospital with chest pain and shortness of breath, and a transthoracicechocardiogram revealed an atrial thrombus.
   该患者因胸痛和呼吸困难被送进医院，经胸超声心动图检查发现心房血栓。