tn requin pas cher 106 cases of ear trauma in pati

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106 cases of ear trauma of hearing test

Offer code article number】【B】 1000-5161 (2002) 06-0058-01 ear trauma induced hearing changes, clinical very common. Treatment when the patients complained of more or complete loss of hearing loss, hearing tests accurate assessment of the degree of ear injury and treatment is significant. Since 2000 to 128 106 cases of ear trauma of pure tone audiometry and acoustic impedance, ABR test analysis,[link widoczny dla zalogowanych], are reported below. 1 Data and methods 1.1 Clinical data in 106 patients, 22 cases of traumatic ear, one ear trauma 84 cases; male 67, female 39 cases; those who are oldest 56 years, minimum 7 years of age; including 9 cases of brain trauma, 17 cases of blast injuries, 4 cases of head and falls, 76 cases of assault auriculotemporal trauma. 1.2 Inspection Methods ear examination: 11 patients with ear and skin around the ear laceration, 35 cases of 42 ears with tympanic membrane perforation. 60 patients with 75 complete eardrum. Pure tone audiometry: The Chindex GSI61 type audiometer checks by hand in the sound room were six of 0.25,0.5,1.0,2.0,4.0,8.0 KHz frequency of bone , air conduction testing. Acoustic impedance tests: The Chindex GSI33 type acoustic impedance meter, test the tympanic pressure curve and the four frequency 0.5,1.0,2.0,4.0 KHz stapedius reflex. ABR test: The NDI200 Poseidon evoked potential, the maximum stimulus intensity ll8clB, testing the latency,[link widoczny dla zalogowanych], wave interval, amplitude and auditory response threshold. 2 Results 2.1 pure-tone audiometry test, some patients are hesitant response to frown, eyes closed meditation and other performance. In addition,[link widoczny dla zalogowanych], 8 patients with 16 normal hearing ears, the 58 cases of 62 ears on the maximum output of 120dB without reaction air conduction, bone conduction fully heard. Expressed as 50 ears were 40 cases decreased hearing, the curve is flat or dish. However, repeated testing each individual frequency, auditory threshold value can not be repeated, the results of retesting the difference is greater than 10 - 20clB above. 2.2 42 of 35 cases of acoustic impedance testing for tympanic membrane ear, ear canal volume display 7.0, in addition to tympanic pressure curve and the stapedius reflex can not be tested,[link widoczny dla zalogowanych], the other patients were tympanic pressure curve 62 normal, 49 cases reflected the ear. 8 cases of 9 ears of acoustic reflex threshold increased stapedius response completely disappeared in 15 ears in 14 cases. 2.3ABR 104 ears tested 84 cases of well differentiated waveform, v wave reaction threshold is normal (≤ 40dBnHL), 8 cases v 9 ears with mild to moderate increase in reaction threshold wave, wave-type poorly differentiated, only 14 cases of 15 ears. 3 Discussion of clinical pure tone audiometry is the method commonly used in hearing tests, the results are often subject to testing the impact of the subjective consciousness. Therefore, hearing tests ear trauma, not a conclusion, if necessary, repeat the test. If each of the frequency threshold of hearing threshold difference between the 10 ~ 20dB or more, should be suspected as a Acoustic impedance testing as an objective hearing test method, the current application of the more common, patients can be roughly estimated that the hearing level. In this paper, the normal acoustic reflex threshold of 62 ears,[link widoczny dla zalogowanych], 48.4%. 9 ear reflex threshold increased by 6.9%. Tympanum pressure curve with tested negative after ear pure tone audiometry results. which, 14 cases of no response to ABR 15 ears, 8 cases of 9 ears V wave threshold to rise, analysts found that 8 patients had a history of head trauma history. ABR testing and acoustic impedance test results are consistent. the objective diagnosis of hearing loss is significant. In short, complained of hearing loss, ear trauma patients should be asked in detail about history, including whether the history of brain trauma, combined with pure tone audiometry, acoustic impedance and ABR test results were analyzed to objectively judge whether the normal hearing. Received: 2oo2-10-27
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