1,721,004 research outputs found
CONSIDERATIONS SUR L'UTILISATION DE MATERIAUX ALLOPLASTIQUES DANS LA CHIRURGIE DE L'OREILLE MOYENNE
No full textLa neuropatia Uditiva
No full textDescrizione delle cause, diagnosi e terapia della neuropatia uditiva ad esodio infantil
Intraoperative videomonitoring of the facial nerve
No full textObjective: To propose the application of an intraoperative videomonitoring system in otologic and otoneurologic surgery. The authors also compare results obtained by using this system with findings deriving from electromyography and pneumosensorial monitoring methods. Study Design: The single-subject design study, involving six patients with middle ear or otoneurosurgery, compares reliability of different monitoring procedures, especially in terms of advantages and drawbacks. Setting: Video system versus electrophysiologic and pneumosensorial systems. Patients: Two patients affected with chronic otitis media, two from Meniere's disease, and two from Acoustic Neuroma. Interventions: Intraoperative diagnostic and prognostic. Results: Electrophysiologic method shows more sensibility, but is affected by a moderate grade of false positive because of electric artifacts; videomonitoring system showed less sensibility, but appears reliable; pneumosensorial system gives in between results. Conclusions: In intraoperative monitoring techniques, reliability and feasibility are the most important factors and are achieved, in this study, by the videomonitoring system. Video recording of images have permitted further off-line analysis
Video-based system for intraoperative facial nerve monitoring: Comparison with electromyography
No full textObjective: To validate a recently developed intraoperative facial nerve monitoring system that is based on video control of facial movements. Study design: In a single-subject design study, involving 15 otoneurosurgical patients, the relationship between intensity of neural stimulation, facial movements, and electrophysiologic voltage were measured, The analysis was performed by measuring the ipsilateral oral commissure displacement in relation to different levels of current administered to the nerve during surgical procedures. Setting: Electromyography and video system intraoperative facial nerve monitoring. Patients: 15 patients (9 men, 6 women; mean age, 61 yr) undergoing a translabyrinthine approach for removal of acoustic neuroma. Results: Electromyography showed slightly greater sensitivity. With regard to the stimulation-response ratio, facial movement and electromyographic amplitude showed very similar responses. Conclusions: The video system was considered useful in terms of validity and reliability, Furthermore, the authors' surgical experience showed some limitations of electromyography, especially in terms of electrical artifact during cauterization, totally masking the electrophysiologic monitoring
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