acute bacterial endocarditis

例句：

1. 1. The patient's condition worsened rapidly after the surgery.
   手术后，患者的病情迅速恶化。
2. 2. He was diagnosed with acute bacterial endocarditis and required immediate treatment.
   他被诊断出患有急性细菌性心内膜炎，需要立即治疗。
3. 3. Acute bacterial endocarditis can lead to serious complications if left untreated.
   未经治疗的急性细菌性心内膜炎可能导致严重并发症。