PDF(Pubmed)
Abstract：
To study the pattern of hearing loss and its recovery in cases of temporal bone fractures. 95 cases of temporal bone fractures, selected from head injury cases, were examined in Trauma centre or Intensive care unit or in Otorhinolaryngology department in a tertiary care Army Hospital. Hearing loss was assessed by pure tone audiometry. The recovery pattern of hearing loss in each case was studied by further follow up audiometry after 30 days, 60 days and 90 days. Hearing loss was detected in 71 cases. Majority (42%) had mild degree of hearing loss followed by severe (18%). There were equal numbers of sensorineural and conductive hearing loss. Hearing loss was higher in transverse (62%) and oblique (27%) fractures compared to longitudinal (11%). Severe, profound and high frequency hearing loss were more associated with otic capsule violating fractures as compared to otic capsule sparing fractures. Complete recovery to under 25dBHL as seen on day 30, 60 and 90 were 27%, 32% and 59% respectively. Hearing loss, though under reported, is an important complication which often occurs in all types of temporal bone fractures. Conductive hearing loss is as common as sensorineural one. Otic capsule violating fracture is more likely to cause severe and profound hearing loss. Complete recovery is not the rule.
摘要：
目的研究颞骨骨折患者听力损失的规律及其恢复情况.颞骨骨折95例,从颅脑损伤病例中选择，在三级保健陆军医院的创伤中心或重症监护病房或耳鼻喉科进行了检查。通过纯音测听法评估听力损失。30天后通过进一步的随访测听法研究了每种情况下听力损失的恢复模式，60天和90天71例听力损失。大多数（42％）的听力损失程度较轻，其次是严重（18％）。感觉神经性和传导性听力损失的数量相等。横向（62％）和倾斜（27％）骨折的听力损失高于纵向（11％）。严重,与保留耳囊的骨折相比，深度和高频听力损失与耳囊侵犯骨折更相关。在第30、60和90天完全恢复至25dBHL以下为27%，分别为32%和59%。听力损失,尽管报道不足，是一种重要的并发症，经常发生在所有类型的颞骨骨折中。传导性听力损失与感音神经性听力损失一样常见。口膜侵犯骨折更有可能导致严重和深刻的听力损失。完全恢复不是规则。
