摘要
背景:眾所周知，槍枝射擊對內耳所造成的衝擊不小，但警界同仁卻多不自知，以致老來飽受耳鳴、重聽，眩暈所苦。 方法:同一單位之警察，於打靶射擊前、後，進行傳統純音聽力檢查及超高頻聽力檢查，俾兩相對照。所有警察均接受鳥茲衝鋒槍與M16步槍的射擊訓練，連續3週。打靶的同時，並檢測鳥茲衝鋒槍與M16步槍的噪音度。 結果:比較異常耳各頻率受害的程度，在傳統純音聽力檢查中，無論是右耳或左耳，皆以6kHz及8kHz處最常受害。至於超高頻聽力檢查中，則10-18kHz各音頻的異常率均超過50%。檢測鳥茲衝鋒槍與M16步槍的最大噪音值分別是104dBA及127dBA。 結論:在作射擊訓練時，須配戴耳栓，併覆以耳罩，以雙重保護聽力，避免聽性外傷。
並列摘要
Background: Acoustic trauma caused by firearms has been weel knows for years. Surprisingly, how to prevent this harmful event is unfamiliar to the policemen. Methods: Twenty policemen were subjected to conventional and ultrahigh frequency audiometries, before and after shooting with submachine gun and rifle. Results: In conventional audiometry, 6 kHz and 8 kHz were th frequencies that most often influnced by gunfire. In the ultrahigh frequency audiometry, more than 50% of the ears had abnormal hearing in every frequency. Conclusion: It is recommended that the policemen should use ear plugs as well as ear muffs during shooting.
延伸閱讀
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