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【单选题】
女，24岁，发现心尖区Ⅲ级收缩期杂音3年，发热2。可闻收缩中、晚期喀喇音，有杵状指，足底有无痛性小出血点上例患者心脏检查更为常见的体征是（）A.
出现的病理性杂音
B.
早搏
C.
房室传导阻滞的体征
D.
原有病理性杂音强度增加二级以上
E.
心动过速
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