internal fibrillation

例句：

1. 1. The patient's heart rate was elevated during the examination, indicating a potential risk of internal fibrillation.
   在检查期间，患者的心率升高，表明可能存在内部心律不齐的风险。
2. 2.The doctor suspected that the patient might have suffered from internal fibrillation due to stress.
   医生怀疑患者可能由于压力而患有内部心律不齐。
3. 3.The patient's condition worsened after the surgery, and the doctors were concerned about the possibility of internal fibrillation.
   手术后，患者的病情恶化，医生们担心可能存在内部心律不齐的可能性。