cardiolith

例句：

1. 1. He was diagnosed with atrial calculus and required surgery.
   他被诊断出患有心石，需要手术治疗。
2. 2. The patient's condition worsened after the surgery, requiring further investigation.
   手术后，患者的病情恶化，需要进行进一步的调查。
3. 3.Cardiologists recommend regular exercise to prevent heart disease and reduce the risk of developing atrial calculus.
   心脏病专家建议定期锻炼，以预防心脏病并减少患心石的风险。