患者女性，36岁。残根，既往有风湿性心脏病，现存在二尖瓣狭窄，心功能I级，此患者最佳治疗方案为
A <img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/12269623_0_1.gif">分次拔除，术后预防性使用抗生素 B
<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/12269623_0_2.gif">分次拔除，术前预防性使用抗生素 C
<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/12269623_0_3.gif">分次拔除，术前术后预防性使用抗生素 D
<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/12269623_0_4.gif">一次拔除，术前术后预防性使用抗生素 E
<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/12269623_0_5.gif">一次拔除，术前预防性使用抗生素
