摘要
外伤性鼓膜穿孔５０例５６耳，其特点是鼓膜穿孔多位于紧张部光锥后，穿孔呈三角形、梭形，以１～２ｍｍ多见，以鼓膜脐为中心呈放射状，边缘反应性充血，纯音测听示穿孔面积１～２ｍｍ者为２４．３ｄＢ，３～４ｍｍ者为３３．８ｄＢ，４ｍｍ者为３９．
Fifty cases with 56 ears suffered from traumatic perforation of tympanic membrane were analied.It is indicated that the perforation of tympanic membrane lied in the tense part of tympanic membrane and behind the cone of light,it was triangular or fusiform in shape and 1 2mm in diameter.The pure tone of which the perforation of tympanic membrane was 1 2mm was 24.3dB,of 3 4mm was 33.8dB,of 4mm was 39.7dB.
关键词
鼓膜穿孔
外伤
临床特点
Perforation of tympanic membrane
wounds and injuries
