valvular disease of the heart

例句：

1. 1. Valvular disease can lead to heart failure if left untreated.
   如果不治疗，瓣膜病可能导致心脏病发作。
2. 2. The patient's condition was diagnosed as valvular disease.
   患者的病情被诊断为瓣膜病。
3. 3. The doctor recommended that the patient undergo surgery to treat the valvular disease.
   医生建议患者接受手术来治疗瓣膜病。