Auris, nasus, larynx · 2011
Effect of the stapedotomy technique on early post-operative hearing results--Preliminary results.
Клиническое исследованиеСтатьяНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
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Just Tino, Guder Ellen, Pau Hans Wilhelm
Аннотация
OBJECTIVE: To compare three stapedotomy modalities used to fenestrate the stapes footplate in patients with primary otosclerosis.
MATERIALS: The non-randomized and unblinded one-center study included 48 patients with primary otosclerosis who underwent stapes surgery between May 2008 and April 2009. The patients were divided into three groups (single shot and two-shot CO(2) laser stapedotomy, perforator) depending on the modality used for stapedotomy. Bone conduction (BC) and air conduction (AC) thresholds, air-bone gap (ABG), and the difference between mean pre-operative and 2- to 3-week post-operative BC thresholds were analyzed.
RESULTS: The temporary BC deterioration was most pronounced at 6 and 8kHz after 2-shot laser stapedotomy. A significant drop in AC or BC was not found in any of our 48 patients. Age, high-dose cortisone therapy, and 'preoperative hearing' did not influence the post-operative hearing results.
CONCLUSION: Even though the number of patients presented here was small and statistical analysis was limited, the study showed a trend toward worse BC thresholds at 6 and 8kHz after a second shot CO(2) application. Whenever possible, treatment should avoid a second laser shot on the already opened inner ear with the laser parameters used for the initial shot.
MATERIALS: The non-randomized and unblinded one-center study included 48 patients with primary otosclerosis who underwent stapes surgery between May 2008 and April 2009. The patients were divided into three groups (single shot and two-shot CO(2) laser stapedotomy, perforator) depending on the modality used for stapedotomy. Bone conduction (BC) and air conduction (AC) thresholds, air-bone gap (ABG), and the difference between mean pre-operative and 2- to 3-week post-operative BC thresholds were analyzed.
RESULTS: The temporary BC deterioration was most pronounced at 6 and 8kHz after 2-shot laser stapedotomy. A significant drop in AC or BC was not found in any of our 48 patients. Age, high-dose cortisone therapy, and 'preoperative hearing' did not influence the post-operative hearing results.
CONCLUSION: Even though the number of patients presented here was small and statistical analysis was limited, the study showed a trend toward worse BC thresholds at 6 and 8kHz after a second shot CO(2) application. Whenever possible, treatment should avoid a second laser shot on the already opened inner ear with the laser parameters used for the initial shot.