以5002000Hz的平均听阈为准,以下哪一类听阈属于中重度耳聋A.26~40dBB.41~55dBC.56~70dBD.50~70dBE...

作者: rantiku 人气: - 评论: 0
问题 以5002000Hz的平均听阈为准,以下哪一类听阈属于中重度耳聋
选项 A.26~40dB B.41~55dB C.56~70dB D.50~70dB E.60~80dB
答案 C
解析 :耳聋分级,以单耳听力损失为准,分为五级:①轻度耳聋:听低声谈话有困难,语频平均听阈<40dB;②中度耳聋:听一般谈话有困难,语频听阈在41~55dB~③中重度聋:要大声说话才能听清,语频听阈56~70dB;④重度耳聋:需要耳旁大声说话才能听到,听阈在71~90dB之间;⑤极重度耳聋:耳旁大声呼唤都听不清,听阈>90dB。

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