ميزان تغييرات شنوايي حسي-عصبي به دنبال برداشتن استخوان ماستوئيد در بيماران مراجعه كننده به بيمارستان خليلي شيراز

Background and Objectives: Muscles arc known as organs which can generate pain in human body. Muscle tissues more than other organs are predisposed minor tearing during activities of daily living and C~HlSC rain. Among di fTerent types or muscle pain, r

Background and Objectives: Sensory - neural hearing loss following mastoid surgery has been Reported with different severities. In the mastoid surgery, different factors can affect hearing. The aim of this study was to introduce the most common frequency that was affected during mastoid surgery and also to determine the correlation between duration ofdrilling and suction irrigation with the severity of sensory - neural hearing loss. Materials and Methods: This Longitudinal Study was performed in the E.N.T department of Khalili HopistalShiraz University of Medical Sciences. Thirty consecutive patients with chronic otitis media were selected. Audiometry was done (25011z - 8kHz) in two occassions, one day before the operation and 2 months after the operation. The results were analyzed using paired T- test and Pearson Correlation. Results: There was not any significant change in threshold of bone conduction in all frequencies (250HZ-8KHZ) after 2 months. The average time of drilling, was 46.6 minutes (SO 8.77). There was a significant correlation between the time of drilling, suction. irrigation and change in bone conduction threshold in the 4KHZ, (p