[Predictive factors of facial palsy of the acoustic neurinoma after retrosigmoid surgery: 230 cases].

Objectives: To determine predictive factors influencing postoperative facial palsy during retro sigmoid approach in vestibular schwannoma surgery.

Material And Methods: Retrospective study over 230 patients with vestibular schwannoma, mostly stade I and II, operated by retro sigmoid approach, by the same oto neuro chirurgical team between 1993 and 2004. Pre and post operative parameters taken into consideration: quantitative: age and sex, audiometric parameters, duration of clinical symptoms; qualitative: tumor anatomic factors and facial nerve function according to House Brackmann classification.

Acuteness of preoperative factors to predict hearing preservation in acoustic neuroma surgery.

Objectives: To determine in patients with acoustic neuromas the predictive factors of hearing preservation according to clinical, radiological, and electrophysiological parameters and to evaluate, for each of these predictive factors, the percentage of patients with preserved hearing.

Study Design: The study involved 107 candidates for hearing preservation attempt. Mean age was 49.

[Effects of buflomedil and naftidrofuryl on the human cochlear microcirculation measured by laser-Doppler].

The aim of this study was to assess the effects on cochlear blood flow measured by laser-Doppler of two vasoactive agents known for their supposed effectiveness in the presbyacousy treatment (buflomedil, naftidrofuryl), 16 patients undergoing acoustic neurinoma surgery were studied. Cochlear blood flow (CBF) was continuously recorded after the head of the probe was inserted into the internal ear through the round window. Systolic arterial pressure (SAP) and heart rate (HR) were continuously recorded via an arterial cannula.

[Otosclerosis: stapedectomy or stapedotomy. A long-term comparative study. Apropos of 1279 cases].

The authors report 1279 surgical operations of otosclerosis performed between 1980 and 1992 in 959 operated patients. They chose the autegenous vein or perichondrium interposition TeflonR piston; however this technique has improved over the past few years. The size of the stapedectomy has been diminishing; from total, then partial stapedectomy, at last to 0.

[Value of oto-endoscopy in the follow-up treatment of cholesteatoma of the middle ear].

The endoscopic approach to the middle ear in eradication of cholesteatoma is now very frequently realised as in the control of the cavities of the middle ear in second stage of cholesteatomas for revision. The improvement of eradication will help to prevent recurrent cholesteatoma and to manage ossiculoplasty. Retraction pockets must also lead to endoscopic control and management.

[Preservation of the stapedial muscle in the treatment of otospongiosis, apropos of 48 cases].

The surgical management of otosclerosis, using drilling of the foot plate with a 8 mm diamond burr, 4 mm diameter, teflon prosthesis and vein graft, seems to be in our experience the safest procedure. However, we have tried to keep the function of the stapedial muscle in 48 patients to study the effects on hearing improvement, the stapedial reflex conservation, the protection of inner ear during the six months after surgery. The original technique and results are reported.