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Abstract

Results: No significant differences were demonstrated between pre- and post-operative scores of handicap associated with hearing, tinnitus or dizziness (Wilcoxan signed rank test, five per cent significance level). There were indicators therefore that the process of tumour removal and post-operative recovery had not heightened the patient perception of audio-vestibular handicap. Strategies to enhance hearing preservation the middle cranial fossa exposure. Hearing preservation is a realistic goal for acoustic tumours that are not in contact with the brainstem. The middle cranial fossa exposure of the cerebellar pontine angle is one approach that allows preservation of hearing, but has been criticized for limited exposure, anatomical difficulties, and increased risk to the facial nerve and temporal lobe. The advantages of this approach include direct access to the lateral most extent of the internal auditory canal, and early identification and direct exposure of the facial nerve. This report will describe our experience with the middle fossa and extended middle fossa procedure using auditory whole nerve action potential monitoring. Hearing preservation was possible in 69 per cent of patients and 92 per cent exhibited House/Brackmann grade I or II post-operative facial nerve function. Seizures, intracranial bleeding, temporal lobe stroke or aphasia have not occurred. Methods of exposure, tumour dissection, and auditory nerve near-field monitoring will be discussed. Facial nerve outcome in acoustic tumour surgery. sinus surgery (including endoscopic surgery), rhinoplasty, major reconstructive nasal surgery, oncology and base surgery. An inverse relationship between MUC2 and MUC5AC was observed. Papain digestion of MUC5AC-rich samples resulted in three distinctive bands on SDS-PAGE. High serine, threonine and proline contents characteristic of mucins were found. The amino acid composition of papain-digested mucins did not fit with the specific composition of any of these three mucins. This may suggest the presence of other mucin(s). Conclusion: At least three mucins are expressed in the sinuses in chronic sinusitis with an inverse relationship between MUC2 and MUC5AC. In the lower respiratory tract, no specific relationship between these three mucins has been observed. This variable expression may reflect the multifactorial aetiology of chronic sinusitis such as infection, allergy. The effect of otitis media with effusion on balance in children as measured by sway magnetometry.