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【单选题】
男性，23岁，心悸气短4年，水肿2。查体：BP110/30mmHg，面色苍白，颈静脉怒张，心界大，心尖部杂音，肺动脉瓣区第2心音进，主动脉瓣区舒张期叹息样杂音，有水冲脉枪击音。超声：二尖瓣增厚，主动脉瓣关闭欠佳有反流以下哪项指标是手术禁忌证A.
LVEF>0.2
B.
LVEDD≥60mm
C.
LVEF>0.5
D.
LVEDD≥70mm
E.
LVEDD≥80mm
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