问题
问答题 简答题
试述主动脉瓣狭窄(As)超声心动圈的主要特点。
答案
参考答案：
(1)B型超声：可见主动脉瓣叶增厚毛糙，回声增强。收缩期瓣叶不能靠近主动脉壁或与主动脉壁平行，多呈"八"字形样改变；心底短轴切面可见收缩期瓣口变小，并且常伴有室间隔和左室后壁增厚。
(2)M型超声：主动脉瓣开放口常小于15mm，瓣叶增厚，舒张期关闭线厚度常大于主动脉壁的厚度。
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试述主动脉瓣狭窄(As)超声心动圈的主要特点。
参考答案：
(1)B型超声：可见主动脉瓣叶增厚毛糙，回声增强。收缩期瓣叶不能靠近主动脉壁或与主动脉壁平行，多呈"八"字形样改变；心底短轴切面可见收缩期瓣口变小，并且常伴有室间隔和左室后壁增厚。
(2)M型超声：主动脉瓣开放口常小于15mm，瓣叶增厚，舒张期关闭线厚度常大于主动脉壁的厚度。
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